They include that pack in almost every assortment kit from China. I buy digikey caps when I work on quality products. The fan ramping up is hilarious. Adds suspense. I don't think I've ever used a cap from that pack for anything above logic level vtage on a breadboard like you said. You can't get a 1hz pulse out of a 555 with them.
I once worked in a Japanese company that manufacture ceramic capacitors as a production supervisor. Capacitors that rated at 250V AC were subjected to alternate flash tests at 2.1KV AC and 3KV DC. Any defects in the dielectric ceramic disc would go up in smoke and binned.
@@TrevorsBench The disc was painted both sides with silver paste. The silver paste came from Japan and it was placed into a kind of cylinderical ceramic conditioner with acetone and many marbles that needed to be "rolled" on a machine for 48 hours before it can be used, subjected to passing the viscosity test. The painted disc would be send to an 800 deg C oven to "bake" off all the impurities. The shiny surfaces on both sides were the plates for soldering the wire connectors. That was almost 50 years ago. Not sure if the production methods had changed now.
I’m watching this on a phone and that first explosion still startled me enough to swear in surprise, must have been pretty ear-splitting in the workshop. I’m no snob but it’s Japanese capacitors all the way for me. I don’t want repairs coming back and I don’t want my own stuff failing because I cheaped out on parts, especially if it’s a laborious tear down and rebuild.
I have seen theses same problems from name brand parts. I always check values. I do go for higher heat levels 105C i do look at enough voltage to be way above my working needs. I use a Capacitor Checker to confirm a caps value . I also pay more if i have a Audio need or a Computer , Switching Power Supply need. Not every circuit is that demanding or picky. High Grade Caps are for devices that get full use to achieve accuracy.
ChongX has worked and other Chinese brands have worked ok for me repairing discarded 8-track/amplifiers from the 70s. I don't fix things for other people though and I don't use them in more desirable projects. Also, I've had to check every capacitor before using as there are some that are leaky/shorted brand new! I'll have to make sure if I use them again to always overspec. on the voltage.
It's very possible that those are mislabled (on purpose)........ testing 2 from each batch is always fair. For super cheapo caps, I use 25v ones in 9v circuits only.
@@chumleykWe could say that, but its more the monetary incentive, a 63 100v caps cost way more than 16 9 or even 5v, and the you have the big tolerance gap which as is +-20% but lets add another 5% because again, they like to overspec things there to sell more but they dont spec if the voltage rating is +-20%, they say the capacitance is.
Hi again, I'm glad I take beta blockers as I leaped out my skin when that first cap went pop. Not long ago I restored a beast of a theatre amp, a Sherwood Newcastle Rds 925. Was a big job! The main power filter caps I got were from china (a store with good rep and score) and they are jccon. They don't seem fake and they don't rattle! And they are working fantastic. If I crank it up, give it some stress, you think those caps will leave a crater where the amp was? They are (I think) 16k at either 50 or 63v. I forget! Too much solder fumes 😁
Hi Mark, You should be ok. The initial power up would stress the caps to fail if they were weak or fakes. Since it's survived that, I'd say they are good, no worries
@@TrevorsBench thanks for the reassurance. They seem to hold up under stress, the amp is astoundingly good. You know I really like your channel, it's so helpful and informative. Keep it going. My huge thanks.
Just go for Panasonic, nichicon, united Chemicon, cde, b&c components, instead of crap and it'll last, especially panasonics fm or fr series or nichicons uhe, uld, upw series
o problema é que algumas lojas aqui no BR estao vendendo esse lixo. eu notei isso nesse momento quando ia trocar um capacitor de uma fonte. fiz um teste rapido com o capacimetro e um cap novo da chong que comprei aqui, está com um valor abaixo do que deveria ser.
@@play134 Comprei no Ebay , vendedor da China 33.000uf 63v, marca SPRAGUE, o vendedor já tinha vendido 104 peças, acreditei por ter essa venda e comprei 4 peças, quando chegaram fiquei desconfiado e fui analisar um deles, não deu outra, removi a capa azul do capacitor e por baixo havia simplesmente outro capacitor com a capa preta, os caras são fo....a, tiveram a manha de recapear um capacitor imitando o original americano, entrei em contato com o vendedor enviando fotos do produto falsificado e pedi o reembolso, pediu desculpas e reembolsou na hora o valor pago. mas já tinha vendido 104 peças.
Sweden taxation: "let me introduce myself" Its literally over 10 times cheaper to buy from Aliexpress. One cheap 200uf 16v cap is over 1,5$ unless you buy china import caps lol
@@nopochoclos still, for a tiny bit more you get better capacitors that meet specs that won't blow their guts everywhere ruining your design which all the parts to make that project, transistors, resistors op amps microcontrollers ect. costs more anyway then a few better quality capacitors, its like either you get better capacitors, or you risk flushing all of your hard work down the drain when one of em blows... There still really is no excuse, because it would save you money in the long run... Then if you buy more caps or parts then you need from a place like mouser, you get price brakes on stuff so you pay less for more anyway... Using horrible capacitors can also impact your design and make it under perform as well... Look at the ones he tested, their junk lmao. Even general purpose nichicons are better...
@@bobking7347 It seems that you are one of those who like to win the discussions, I repeat Argentina 1 dollar is equivalent to 200 Argentine pesos, let's repeat with me 200 more times, to this add the ridiculous customs taxes 50% of the cost of the product, to this 30% of Political theft called (solidarity tax), add more money that they charge you when you withdraw at customs, if you ask for curier type UPS / others they charge you all the same above and you must add almost 50% because it does not arrive in your city then they outsource the mail and they steal you when you paid door to door they charge you that extra. In summary here even a capacitor is extremely expensive.
When testing capacitors with a power supply use current limit, the forming current will rise exponentially resulting in a fire cracker, best to use low cost electrolytic capacitors at reduced voltage.
I've been pretty lucky with ebay caps. I would never put them in a heavy-duty item, but for filtering and light-duty useage (turntable motor control, etc.) they are fine. I did get burned once with some fake filter caps that I used in an amplifier.
I always try to source cheap caps but they need to be rated 105C @7000+hrs min. Then once I find them I buy in bulk so costs are low per unit. I wouldn't consider these garbage caps for repair or a project, too risky. Thanks for watching TG!
I actually have an assortment of chongX caps bought 2 years ago in Taiwan. I tested them with 25% overvoltage and none of them leaked, I think you might have gotten rejects.
Yes I am well aware of where the aforementioned retailers get their product. What I am saying is that these retailers are reputable and certainly more discriminating of what product they carry. They have long held reputations to uphold.
I've not had any issues with ChangX like you. Though I certainty wouldn't use them for high frequency switching supplies. You do get what you pay for with these. That first one exploded like it was reversed polarized. Wouldn't be surprised if they formed them wrong in the factory. There is something satisfying about them exploding :)
I maybe completely wrong but as a kid I watched my dad repairing 🤷🏻♂️everything with electronics, he was an audio visual engineer by trade title. He had to order a lot of little components but there were quite a few companies selling genuine but out of spec components ( basically rejects) I wonder if that still happens 🤔 Nice video bro
I've already seen ChongX capacitors in the past and they worked good on some low frequency simple circuits, but that's the problem with those cheap ass capacitors, they don't have any quality control so they could last 1 day or 10 years. From my own experience, if you want a cheap but good capacitor, go with Hitano! I've been using them a lot, even the 85C rated ones, and they always seen to have good ESR, capacitance and low leakage (Vloss). Teapo, ChengX, Jamicon, CapXon are also reasonable for low frequency, but wouldn't last on high frequency smps.
@@TrevorsBench I found data sheet for those caps - they are ChengX KM series general purpose capacitors - so I don't think they will last 25 years - they may do fine for 5 years if you don't keep them energized all the time. I think they are intendent for the cheap throw away 1 year warranty devices. www.paullinebarger.net/DS/Chengx/ChengX%20%5Bradial%20thru-hole%5D%20KM%20Series.pdf
@@TrevorsBench I have the same type LCR as you. What I’ve found (with mine at least) is if you change the frequency to 100 hz or 100khz for your capacitance and ESR tests you’ll have more accurate readings.
Excellent explanation! I noticed that you made the capacitance and ESR measurements with the frequency of 1kHz. At this frequency the capacitance value tends to drop and the ESR as well. In the datasheets of the capacitors, the values accepted in 20% + or - are measured and defined in 120Hz. How did you define whether the ESR was high or low, if the generic tables are not based on scientific measurements, but on an average, and are expressed by measurements made at 100kHz. It really is a somewhat confusing area, and likewise, it demonstrated the poor quality of these Chinese capacitors, and the risk of using them in circuits, especially with high working voltages. Regards!
I agree with most but Impedance is given at 100 kHz, hat is not the same as ESR but the reactance is very low so it is kinda the ESR. But there is no wear limit given. The parameter of importance is tan d (also known as D or DF) This is given for 100 or 120 Hz. Normally is stated that twice the tan d is the "dead" limit. While measuring he quickly showed D and that was in the 0,6 at 1kHz, that will be around 0,06 at 100 Hz and that is not super bad. (for a normal 85 degrees cap what this probably is in real). Other parameter is the max ripple current, longlivity, ESL, DC leakage etc. But people can not complain, they do care about the specs. The seller does not have datasheets or specs so you are stupid if you buy them.If you care about certain specs, buy caps from a brand that have a datasheet and then check them against that datasheet. Not via some of those made up ESR lists that float over the internet often made by people who have no clue and use a DIY ESR meter at 100 kHz that measures impedance instead of ESR.
@@pa4tim Fantastic placement! On my channel, I made several videos using professional measurement equipment, such as an LCR Bridge, and with a very accurate DC current meter. remembering that the parameters read, and the decision whether they are within the manufacturer's acceptable parameters, depends 100% on the specific datasheet for that capacitor, which in most cases, only reference brands have them in detail. Some parameters read can already give you an idea of the quality and decision to change the capacitors, already having some practical experience. On my channel the content is in Portuguese, but it is possible to activate subtitles with automatic translation. If you can follow along and give your opinions, it will be of great help. Regards
It does explode real loudly. Tried with 2.2uf 50v one. I had safety glasses but not ear protection. Boy, that was loud. I have ears ringing now. Being in a small confined area didn’t help.
12:09 Would be neat to test out some of the others Mr Ali has on his site - JCCON I've used, I *think* they're ok - but don't know for sure, redid my old technics with them; they also sell ELNA SILMICs etc, are they real? Do they hold up, are they a re-labeled ChongX!!? Questions I've had. Been waiting a month for some mystery poly film caps at time of writing.. Keep up the great vids.
Відмінна праця!👍💪. Вам справді надіслали підробку. В мене є декілька справжніх конденсаторів Chong і вони мають гарні характеристики. ESR 0,01 Ом, струм витоку 0.2 мікроампер!!🤫 І це при номіналі 16 Вольт, але я підключав лише до 16 Вольт. Тому я не можу стверджувати що вони витримають більшу напругу.
I have been buying stuffs on Aliexpress the last few years and can not for once recall receiving anything that I could call a quality product and have in fact received many items of junk-level quality.
I've already seen chongx capacitors and I've had one with a safety vent that didn't work. And a 470uF 10V in 6,3x7mm case that couldn't handle it's rated voltage. It didn't explode at 10V, but was drawing a couple milliamps. But once I increased the voltage to 12V, it exploded within a few seconds.
Changed my original Gameboy capacitors with some of these, because the screen began flickering after 10mins. The problems only got worse… gonna change them for some more expensive ones
uh oh, i have some of this brand......i'll have to keep an eye out for the vent misspelling, maybe those bad 16v ones were incorrectly labelled 10v types?
Try reconditioning them and see what happens. I suspect they are beyond their storage life. Old caps breakdown when not used because they are not continually reformed.
Do you think these were knockoffs of genuine Chongx caps, or are all Chongx caps like this? I just bought some caps from Amazon under the brand Bojax, but the labels on the caps say Chongx. I have no idea what the relationship is between these two brands. After watching this video, I'm suddenly not sure whether to go forward with a repair. If you can answer these questions for me, I'd be very grateful.
Not sure what to tell you. They could be ok or not, testing them, if you can, will give you some sense if they will work. I think the caps I bought are either fakes or factory rejects that should have been destroyed & not sold. Chongx caps are not regarded as high quality like Rubycon, Nichicon, Elna and so on. Lots of Chongx capacitors were used in Chinese built equipment and are still working today. On the other hand, I've seen lots of broken gear because of these caps failing. I always recommend sticking with a quality brand for caps otherwise it may come back to bite you again
I bought some JAKEC caps in assorted variety. I noticed they're smaller than the panasonic caps I'm replacing. I got a 5x11 100uf 10v by panasonic, and a 5x11 100uf 16v Jakec that reads 110uf. Then I got a 6x11 100uf 16v panasonic, and the Jakec that matches it in size is a 25v 100uf 6x11. So I'm wondering if they labeled the capacitors wrong on the cheap brands from China. I mean it's printed on the capacitors. If they said they was a lower voltage then they might work.
Are these capacitors from aliexpress any good in using it to learn basic electronics, like RC time constant, filters, bypas, etc and other things using low voltage beloiw 12 volts?
I bought it on Aliexpress. You can find them there if you search for ET4401. I love this meter and use it everyday not just as a cap and ESR meter but also as a bench ohm meter as well. It's accuracy is great for doing repair work
@@TrevorsBench Thank you for your reply. I use own assembled RLC2 impedance meter. Also good thing, but only fixed test frequency 100Hz/1kHz/10kHz measurement.
Capacitors don't blow up unless they're stressed with high ripple current or run at over voltage. Maybe your capacitors failed because of excess heat or maybe a poor design power supply. Replacing them with quality caps will fix the problem but it may re-occur again if the power supply is a poor design and the stress continues. Quality caps = longer life. Poor quality caps = fails sooner Lots of good brands out there, even some Chinese ones are decent Rubycon, Nichicon, Elna, Panasonic, Kemet to name a few
I've been using a cheap capacitor assortment for a while now. I never expected them to be great, but this is really bad, and i'm gonna test a bunch of them now...
If you buy components just for the fun of blowing them up, this make is perfect! Funny how cheap capacitors give you less capacitance and more resistance. The X in Chong X probably means reject or preblown. The marking 16v should probably be 6v or worse 1.6v. Reminds me of buying cheap batteries which were stamped 2500mAh but in reality were 250mAh. The fan coming on is brilliant and just adds to the excitement of the inevitable outcome.
Strange. You must have found the one aliexpress seller doing reject Chongs... I've never had those issues that you have with Chongx caps, most being within 10% of stated value with good esr.
I actually have an assortment of chongX caps bought 2 years ago in Taiwan. I tested them with 25% overvoltage and none of them leaked, I think he might have gotten rejects.
Most quality brands of electrolytics have the top of the aluminum can stamped with a X or Y pattern to provide a weak point for pressure venting. If pressure builds up inside the can too high, the top will swell and crack which will allow the gasses to vent instead of a violent explosion
Hi, Is this a good buy? This LCR meter (for occasional video game console repair attempt) that looks like a multi-meter? Can you measure the capacitor without desoldering it with this meter: 2J` P1510 Thank you. By the way, what's the difference between and ESR meter, multi-meter and an LCR meter? God bless, Happy Easter! He is risen.
A quick search brought me to this page. All these lists are for approximation only solidpost.com/doku.php?id=electronic:standard_capacitor_worst-case_electrolytic_esr_table
I have used this brand for at least 5 years and not had any of the poor results you did. I just do not use them anywhere critical. I have at least 3000 caps like this and can pick any at random and they're in spec. Maybe you have fake copies of really cheap caps or just duds. Just test what you buy.
I've bought thousands of Chinese caps and never had a problem (yet). These duds came from a unknown source and really belong in the garbage can but somebody thought they could profit from them.
I bought 2 6800uf 50v capacitors of this same brand (Chongx) for a vintage subwoofer amp. After seeing this, I didnt use them and I bought the original brand that it had in it. Thanks for this video. Ill never buy these again. They are about half the size as the original so i knew something was amiss when i saw them. The capacitance was 6100uf when i tested them on my Fluke 12 meter. My original caps read better than these cheap new ones by Chongx. GARBAGE! They were like $5 on ebay new. Do you think 6100uf is below tolerance for a 6800uf cap? If so I can return them at least for a refund.
Sometimes you also get a nice welt from these things lol You would think a $100+ florescent green fishing light would have better components. It had sat for a few yrs but still new in package the 2 transistors were rusted out just installed new ones hooked it up to a 12v lantern battery blew the chong capacitor 25v on negative side. I guess I won't replace it with another Chong after seeing this lol
That's fairly typical. Aluminum caps usually have a tolerance of 20% and those are probably just fine for new caps. It's when the capacitance changes drastically and no longer does the job it's supposed to do we consider it failed. There are no 'precision' aluminum caps available because they rely on an electrolyte to work
NOTE the capacitors may contain an corrosive chemical Exploding them will release it into the air. All capacitor brands can have a failure. During the capacitor shortage in early 2000 even the quality company made some bad batches. They should recall and destroy any questionable batches but some companies may let the workers take them. Digi Key is not immune to bad parts. There purchase quantity may allow them to buy from the factories direct and avoid the bad middle man out to make a buck or yen. Digi Key is a distributor not a manufacture. Ali express ebay and Amazon are not manufacture they are electronic store front . Your Apple phone is a cheap" made in china" phone with a US mark up.
Yes I think these are factory rejects. The china people can buy them or get them free resell on ebay or etc... I only buy from Digikey or Mouser. I too have spend alot of time wondering why my circuit didn't work. No more china parts for me. Those caps you have I would throw out. Get them out of my shack. Not worthy.
In those 2 years of my last comment i had about 4 chongx capacitors exploding on me even though I changed to the exact same voltage as the old one. Other china caps though I've never had any problems with.
Oh wow, I bought a kit last year and I thought they'd just be less heat resistant or something but ugh… At least mine came with a plastic box with cases so I can still use that box for something 😀 Guess the X is for bad and the actual brand is Chong?
I always buy Japanese brand capacitors from a reputable website. Only once I bought Chinese capacitors and noticed it was crap, never again. Why would you buy such cheap crap? Buy a good, but little more expensive brand and in the end you're better off. And no I'm not Japanese as my name here says, but Belgian, my girlfriend is Japanese.
Wurth Electeonics capacitors are rebadged Chinese Teapo capacitors if I remember correctly. So not necessarily because they are made in China they are bad.
I have had custom designed digital switching power supplies which for many people can create way more heat on circuits these use high grade caps but it is the design that is flawed they run a group of chips which have 10 of thousands of transistors which will run on 2vdc but they step down 12vdc to 2vdc here is the catch the amperage must be far greater to run 10 of thousand transistors on chips they do not allow for that so your circuit gets hot because it is amperage starved. If you give it higher amperage at this 2vdc voltage it runs cooler. All your digital supplies which run your TV, Computers, even batteries suffer for this. I have had digital Switching supplies start electrical fires because of this . No change in demand just normal operation without any modification. Too much heat is the tip off that heat is dangerous.
Everybody knows the voltage in China is different than other parts of the world. Oh and I heard that positive is - and negative is +. Ok, they are most likely just “regrade for alternate use” caps from capacitor assembly line testing.
I see many electronics repair people having better luck with brands like Nichicon, Rubycon, Nippon Chemicon, Panasonic, Illinois Capacitor, Cornell Dublier, Elna, Sprague, etc.
$2 for 120 firecrackers is actually not a bad deal.
But not as fun😀
Well the Chinese were always good firework makers at least :)
You have to give credit where credit is due lol.
Lmaooo
The original name of the brand was supposed to be ChongX-PLOSION, but they settled to ChongX.
Lmfao. Thanks
@@kingflockthewarrior202 wtf. lol
😂
Black Cat ?
ChongX-XPLOSION :D
They include that pack in almost every assortment kit from China. I buy digikey caps when I work on quality products. The fan ramping up is hilarious. Adds suspense. I don't think I've ever used a cap from that pack for anything above logic level vtage on a breadboard like you said. You can't get a 1hz pulse out of a 555 with them.
I once worked in a Japanese company that manufacture ceramic capacitors as a production supervisor. Capacitors that rated at 250V AC were subjected to alternate flash tests at 2.1KV AC and 3KV DC. Any defects in the dielectric ceramic disc would go up in smoke and binned.
Very interesting, thanks for sharing. Do you know if precious metals, if any, were used in manufacture?
@@TrevorsBench The disc was painted both sides with silver paste. The silver paste came from Japan and it was placed into a kind of cylinderical ceramic conditioner with acetone and many marbles that needed to be "rolled" on a machine for 48 hours before it can be used, subjected to passing the viscosity test. The painted disc would be send to an 800 deg C oven to "bake" off all the impurities. The shiny surfaces on both sides were the plates for soldering the wire connectors. That was almost 50 years ago. Not sure if the production methods had changed now.
@@williamwong5627 Cool, thanks for sharing
Something about the name "ChongX" just screams quality and reliability 😂
100%
This is what Chong Li did after being beat in the Kumite by Frank Dux. th-cam.com/video/3agwl3Dp0NU/w-d-xo.html
HA ha ha ha ha!
Sounds like a Mortal Kombat character....finish him!
Guys seen this befor rated 63v but didn't even get to 16v 😁
I’m watching this on a phone and that first explosion still startled me enough to swear in surprise, must have been pretty ear-splitting in the workshop. I’m no snob but it’s Japanese capacitors all the way for me. I don’t want repairs coming back and I don’t want my own stuff failing because I cheaped out on parts, especially if it’s a laborious tear down and rebuild.
Nichicons rock
Shame about the EOL announcement on Silmics, large, but so damn good!
@@gfriedman99 Panasonic, Rubicon for quality.
I never buy cheap parts. Never.
I have seen theses same problems from name brand parts. I always check values. I do go for higher heat levels 105C i do look at enough voltage to be way above my working needs. I use a Capacitor Checker to confirm a caps value . I also pay more if i have a Audio need or a Computer , Switching Power Supply need. Not every circuit is that demanding or picky. High Grade Caps are for devices that get full use to achieve accuracy.
ChongX has worked and other Chinese brands have worked ok for me repairing discarded 8-track/amplifiers from the 70s. I don't fix things for other people though and I don't use them in more desirable projects. Also, I've had to check every capacitor before using as there are some that are leaky/shorted brand new! I'll have to make sure if I use them again to always overspec. on the voltage.
I use for my transistor radios.
You should use quality in there.... Thats a shame
It's very possible that those are mislabled (on purpose)........ testing 2 from each batch is always fair. For super cheapo caps, I use 25v ones in 9v circuits only.
On purpose? As in, sabotage?
@@chumleykWe could say that, but its more the monetary incentive, a 63 100v caps cost way more than 16 9 or even 5v, and the you have the big tolerance gap which as is +-20% but lets add another 5% because again, they like to overspec things there to sell more but they dont spec if the voltage rating is +-20%, they say the capacitance is.
Hi again, I'm glad I take beta blockers as I leaped out my skin when that first cap went pop.
Not long ago I restored a beast of a theatre amp, a Sherwood Newcastle Rds 925. Was a big job!
The main power filter caps I got were from china (a store with good rep and score) and they are jccon. They don't seem fake and they don't rattle! And they are working fantastic. If I crank it up, give it some stress, you think those caps will leave a crater where the amp was? They are (I think) 16k at either 50 or 63v. I forget! Too much solder fumes 😁
Hi Mark, You should be ok. The initial power up would stress the caps to fail if they were weak or fakes. Since it's survived that, I'd say they are good, no worries
@@TrevorsBench thanks for the reassurance. They seem to hold up under stress, the amp is astoundingly good. You know I really like your channel, it's so helpful and informative. Keep it going. My huge thanks.
i purchased that amp from richer sounds. it was a good amp with good build quality.
thanks for your video, i just asked my supplier to remove this brand from our boards before mass production..
Just go for Panasonic, nichicon, united Chemicon, cde, b&c components, instead of crap and it'll last, especially panasonics fm or fr series or nichicons uhe, uld, upw series
I don't risk buying these Chinese brands, here in Brazil I always buy Epcos,made in Brazil.
o problema é que algumas lojas aqui no BR estao vendendo esse lixo. eu notei isso nesse momento quando ia trocar um capacitor de uma fonte. fiz um teste rapido com o capacimetro e um cap novo da chong que comprei aqui, está com um valor abaixo do que deveria ser.
@@play134 Comprei no Ebay , vendedor da China 33.000uf 63v, marca SPRAGUE, o vendedor já tinha vendido 104 peças, acreditei por ter essa venda e comprei 4 peças, quando chegaram fiquei desconfiado e fui analisar um deles, não deu outra, removi a capa azul do capacitor e por baixo havia simplesmente outro capacitor com a capa preta, os caras são fo....a, tiveram a manha de recapear um capacitor imitando o original americano, entrei em contato com o vendedor enviando fotos do produto falsificado e pedi o reembolso, pediu desculpas e reembolsou na hora o valor pago. mas já tinha vendido 104 peças.
Caps really aren't that expensive at the end of the day. Just buy quality brands.
Sweden taxation: "let me introduce myself"
Its literally over 10 times cheaper to buy from Aliexpress. One cheap 200uf 16v cap is over 1,5$ unless you buy china import caps lol
@@OutOfNameIdeas2 cheaper and crappier, you get what you pay for, you go to mouser and get quality parts...
Depends of the country.. in Argentina are very expensive thanks to de taxes and politicians..
@@nopochoclos still, for a tiny bit more you get better capacitors that meet specs that won't blow their guts everywhere ruining your design which all the parts to make that project, transistors, resistors op amps microcontrollers ect. costs more anyway then a few better quality capacitors, its like either you get better capacitors, or you risk flushing all of your hard work down the drain when one of em blows... There still really is no excuse, because it would save you money in the long run... Then if you buy more caps or parts then you need from a place like mouser, you get price brakes on stuff so you pay less for more anyway... Using horrible capacitors can also impact your design and make it under perform as well... Look at the ones he tested, their junk lmao. Even general purpose nichicons are better...
@@bobking7347 It seems that you are one of those who like to win the discussions, I repeat Argentina 1 dollar is equivalent to 200 Argentine pesos, let's repeat with me 200 more times, to this add the ridiculous customs taxes 50% of the cost of the product, to this 30% of Political theft called (solidarity tax), add more money that they charge you when you withdraw at customs, if you ask for curier type UPS / others they charge you all the same above and you must add almost 50% because it does not arrive in your city then they outsource the mail and they steal you when you paid door to door they charge you that extra.
In summary here even a capacitor is extremely expensive.
At 2pennies per capacitor...your gonna get a 20% tolerance. Keep that in mind.
most electrolytics are 20% anyway, years ago the common/standard grade ones were -20 /+80 ...
When testing capacitors with a power supply use current limit, the forming current will rise exponentially resulting in a fire cracker, best to use low cost electrolytic capacitors at reduced voltage.
That looks like more fun than popping bubble wrap!
They are stamped as 105c rated, because thats the temp they get to with half their rated voltage applied,
I've been pretty lucky with ebay caps. I would never put them in a heavy-duty item, but for filtering and light-duty useage (turntable motor control, etc.) they are fine. I did get burned once with some fake filter caps that I used in an amplifier.
I always try to source cheap caps but they need to be rated 105C @7000+hrs min. Then once I find them I buy in bulk so costs are low per unit. I wouldn't consider these garbage caps for repair or a project, too risky.
Thanks for watching TG!
agree with you ..but still you should use 100Hz only ..as those caps are pretty bad..with lower frequency they might pass...barely
who would have thought blowing up caps would be so entertaining to watch! thanks for the firework display !
I actually have an assortment of chongX caps bought 2 years ago in Taiwan. I tested them with 25% overvoltage and none of them leaked, I think you might have gotten rejects.
Yes, I'm sure they were.
Great demo! I NEVER buy components from China. I buy from Digikey, Mouser, Newark, etc... and you just proved why.😉👍🏻
Yes I am well aware of where the aforementioned retailers get their product. What I am saying is that these retailers are reputable and certainly more discriminating of what product they carry. They have long held reputations to uphold.
nice! didnt know this ! thanks for bringing attention to us for this
You should put a series load resistor may be 160 ohm to limit current. Then increase voltage very slowly. And put a enclosure on it.. be safe.
I've not had any issues with ChangX like you. Though I certainty wouldn't use them for high frequency switching supplies. You do get what you pay for with these.
That first one exploded like it was reversed polarized. Wouldn't be surprised if they formed them wrong in the factory. There is something satisfying about them exploding :)
There r differences between your ChangX and ChongX in the video.
Did you mean: *_ChengX?_*
@@mattmoreira210Or ChingX?
ChungX 😂
It is designed to work on Chinese 16 volt not USA 16 volt.
I maybe completely wrong but as a kid I watched my dad repairing 🤷🏻♂️everything with electronics, he was an audio visual engineer by trade title. He had to order a lot of little components but there were quite a few companies selling genuine but out of spec components ( basically rejects) I wonder if that still happens 🤔
Nice video bro
And ChongX capacitors are not really capacitors, but Chinese Fourth of July Day firecrackers... thanks for the review Mr. Trevor
Where do the ESR values that you use as a reference come from?
Data sheets of standard caps
I've already seen ChongX capacitors in the past and they worked good on some low frequency simple circuits, but that's the problem with those cheap ass capacitors, they don't have any quality control so they could last 1 day or 10 years. From my own experience, if you want a cheap but good capacitor, go with Hitano! I've been using them a lot, even the 85C rated ones, and they always seen to have good ESR, capacitance and low leakage (Vloss). Teapo, ChengX, Jamicon, CapXon are also reasonable for low frequency, but wouldn't last on high frequency smps.
cool video, really enjoyed watching it. Running some of the ChongX caps in my Cobra 2000 looks like I'm going to be changing them out very soon.
We have the same workbench. I use a grey doormat as a work surface too! Also the little green ruler mats!
Your Chinese made power supply and LCR meter probably have the capacitors from the same factory and they work fine if you don't abuse them
You're probably right. They work fine now. The true test will be if they last 5 years or 25 years
@@TrevorsBench I found data sheet for those caps - they are ChengX KM series general purpose capacitors - so I don't think they will last 25 years - they may do fine for 5 years if you don't keep them energized all the time. I think they are intendent for the cheap throw away 1 year warranty devices.
www.paullinebarger.net/DS/Chengx/ChengX%20%5Bradial%20thru-hole%5D%20KM%20Series.pdf
@@dmytrodubovoy2923 junk, id recap it instantly
@@TrevorsBench I have the same type LCR as you. What I’ve found (with mine at least) is if you change the frequency to 100 hz or 100khz for your capacitance and ESR tests you’ll have more accurate readings.
@@trevorco2210 I'll keep that in mind, thanks
Excellent explanation! I noticed that you made the capacitance and ESR measurements with the frequency of 1kHz. At this frequency the capacitance value tends to drop and the ESR as well.
In the datasheets of the capacitors, the values accepted in 20% + or - are measured and defined in 120Hz.
How did you define whether the ESR was high or low, if the generic tables are not based on scientific measurements, but on an average, and are expressed by measurements made at 100kHz.
It really is a somewhat confusing area, and likewise, it demonstrated the poor quality of these Chinese capacitors, and the risk of using them in circuits, especially with high working voltages. Regards!
I agree with most but Impedance is given at 100 kHz, hat is not the same as ESR but the reactance is very low so it is kinda the ESR. But there is no wear limit given. The parameter of importance is tan d (also known as D or DF) This is given for 100 or 120 Hz. Normally is stated that twice the tan d is the "dead" limit.
While measuring he quickly showed D and that was in the 0,6 at 1kHz, that will be around 0,06 at 100 Hz and that is not super bad. (for a normal 85 degrees cap what this probably is in real). Other parameter is the max ripple current, longlivity, ESL, DC leakage etc. But people can not complain, they do care about the specs. The seller does not have datasheets or specs so you are stupid if you buy them.If you care about certain specs, buy caps from a brand that have a datasheet and then check them against that datasheet. Not via some of those made up ESR lists that float over the internet often made by people who have no clue and use a DIY ESR meter at 100 kHz that measures impedance instead of ESR.
@@pa4tim Fantastic placement! On my channel, I made several videos using professional measurement equipment, such as an LCR Bridge, and with a very accurate DC current meter. remembering that the parameters read, and the decision whether they are within the manufacturer's acceptable parameters, depends 100% on the specific datasheet for that capacitor, which in most cases, only reference brands have them in detail. Some parameters read can already give you an idea of the quality and decision to change the capacitors, already having some practical experience. On my channel the content is in Portuguese, but it is possible to activate subtitles with automatic translation. If you can follow along and give your opinions, it will be of great help. Regards
I’ve recently received a shipment of such kit. Seems to be same brand. Damn. Looks like I got chang’d.
It does explode real loudly. Tried with 2.2uf 50v one. I had safety glasses but not ear protection. Boy, that was loud. I have ears ringing now. Being in a small confined area didn’t help.
12:09 Would be neat to test out some of the others Mr Ali has on his site - JCCON I've used, I *think* they're ok - but don't know for sure, redid my old technics with them; they also sell ELNA SILMICs etc, are they real? Do they hold up, are they a re-labeled ChongX!!? Questions I've had. Been waiting a month for some mystery poly film caps at time of writing.. Keep up the great vids.
Відмінна праця!👍💪.
Вам справді надіслали підробку.
В мене є декілька справжніх конденсаторів Chong і вони мають гарні характеристики.
ESR 0,01 Ом, струм витоку 0.2 мікроампер!!🤫 І це при номіналі 16 Вольт, але я підключав лише до 16 Вольт.
Тому я не можу стверджувати що вони витримають більшу напругу.
I have been buying stuffs on Aliexpress the last few years and can not for once recall receiving anything that I could call a quality product and have in fact received many items of junk-level quality.
CCP sabotage!
I've already seen chongx capacitors and I've had one with a safety vent that didn't work. And a 470uF 10V in 6,3x7mm case that couldn't handle it's rated voltage. It didn't explode at 10V, but was drawing a couple milliamps. But once I increased the voltage to 12V, it exploded within a few seconds.
Changed my original Gameboy capacitors with some of these, because the screen began flickering after 10mins. The problems only got worse… gonna change them for some more expensive ones
Thanks! At 12:20 you say you hold it away from you. It doesn't have a pressure release so you can't hold it away from you (at least not the "output").
You get the gold rated caps if you want greater quality. It will handle 105C at 2000 hrs to 8000 hrs which really triples cost .
Thank you for the warning. I am just about to bye capacitors now.
uh oh, i have some of this brand......i'll have to keep an eye out for the vent misspelling, maybe those bad 16v ones were incorrectly labelled 10v types?
Try reconditioning them and see what happens. I suspect they are beyond their storage life. Old caps breakdown when not used because they are not continually reformed.
Do you think these were knockoffs of genuine Chongx caps, or are all Chongx caps like this? I just bought some caps from Amazon under the brand Bojax, but the labels on the caps say Chongx. I have no idea what the relationship is between these two brands. After watching this video, I'm suddenly not sure whether to go forward with a repair. If you can answer these questions for me, I'd be very grateful.
Not sure what to tell you. They could be ok or not, testing them, if you can, will give you some sense if they will work. I think the caps I bought are either fakes or factory rejects that should have been destroyed & not sold. Chongx caps are not regarded as high quality like Rubycon, Nichicon, Elna and so on. Lots of Chongx capacitors were used in Chinese built equipment and are still working today. On the other hand, I've seen lots of broken gear because of these caps failing.
I always recommend sticking with a quality brand for caps otherwise it may come back to bite you again
I bought some JAKEC caps in assorted variety. I noticed they're smaller than the panasonic caps I'm replacing. I got a 5x11 100uf 10v by panasonic, and a 5x11 100uf 16v Jakec that reads 110uf. Then I got a 6x11 100uf 16v panasonic, and the Jakec that matches it in size is a 25v 100uf 6x11. So I'm wondering if they labeled the capacitors wrong on the cheap brands from China. I mean it's printed on the capacitors. If they said they was a lower voltage then they might work.
I have a bag full of them too. Thanks for the idea you found a use for them.😀
I think you meant to say “under rated” instead of “under spec’d…..nice video, thanks!
2.31 for 120 Pcs... what you expect ? I bought those JUNK too but use it to fix the product power by battery and under 6 Volt.
Are most of the 'worst case' ESR charts out there based on a 1KHz test frequency?
Are these capacitors from aliexpress any good in using it to learn basic electronics, like RC time constant, filters, bypas, etc and other things using low voltage beloiw 12 volts?
Hello. I'd like to ask a question: how named your LCR/Impedance meter that you use ?
Thank you.
I bought it on Aliexpress. You can find them there if you search for ET4401.
I love this meter and use it everyday not just as a cap and ESR meter but also as a bench ohm meter as well. It's accuracy is great for doing repair work
@@TrevorsBench Thank you for your reply. I use own assembled RLC2 impedance meter. Also good thing, but only fixed test frequency 100Hz/1kHz/10kHz measurement.
I just jammed a 470 ChongX in an old DVD-R power supply. Hope it doesn’t go boom.
I can assure you, those are factory prime, completely in spec ChongX caps. Especially since ChongX doesn't have data sheets.
They are always spec'ed at +/-20%, BUT it is ALWAYS -20%
I once opened a dispute, and got a refund on the junk!
I can smell that garbage electrolyte from here! 🤢 This is why i always buy "real" parts. Thank you for the demonstration.
my bx5a capacitors have blown up(chengx 6800 uf 25 v)..Which capacitor brands will you suggest..If you could please give me few brand names
Capacitors don't blow up unless they're stressed with high ripple current or run at over voltage. Maybe your capacitors failed because of excess heat or maybe a poor design power supply.
Replacing them with quality caps will fix the problem but it may re-occur again if the power supply is a poor design and the stress continues.
Quality caps = longer life. Poor quality caps = fails sooner
Lots of good brands out there, even some Chinese ones are decent
Rubycon, Nichicon, Elna, Panasonic, Kemet to name a few
I have a audio mixer the capacitor use are all chongX but luckily I have a old CRT tv and I get all the capacitors and change it to my mixer
When a whole circuit board of little elactros goes over voltage, it can be like a machine gun. Always make sure that the caps aim away from you.
I've been using a cheap capacitor assortment for a while now. I never expected them to be great, but this is really bad, and i'm gonna test a bunch of them now...
Am I correct that it is SAFER to connect those capacitors in reverse polarity? :)
Probably not
If you buy components just for the fun of blowing them up, this make is perfect! Funny how cheap capacitors give you less capacitance and more resistance. The X in Chong X probably means reject or preblown. The marking 16v should probably be 6v or worse 1.6v. Reminds me of buying cheap batteries which were stamped 2500mAh but in reality were 250mAh. The fan coming on is brilliant and just adds to the excitement of the inevitable outcome.
What's your opinion about Lelon, Elite and CP branded caps? Thanks a lot!!
Strange. You must have found the one aliexpress seller doing reject Chongs... I've never had those issues that you have with Chongx caps, most being within 10% of stated value with good esr.
I hope you filmed this in protective glasses
Yes, I always wear glasses, i'm blind without them
I want to try one of these with my heathkit capacitor checker with full 600V to see what will happen.
I met a guy who restored antique radios for 1000$ who uses the same brand of capacitors and he's convinced they are fine.
I actually have an assortment of chongX caps bought 2 years ago in Taiwan. I tested them with 25% overvoltage and none of them leaked, I think he might have gotten rejects.
I involuntary shrug when it explodes:-)
At what uF or volts does the explosion become dangerous?
Most quality brands of electrolytics have the top of the aluminum can stamped with a X or Y pattern to provide a weak point for pressure venting. If pressure builds up inside the can too high, the top will swell and crack which will allow the gasses to vent instead of a violent explosion
Hi, Is this a good buy? This LCR meter (for occasional video game console repair attempt) that looks like a multi-meter? Can you measure the capacitor without desoldering it with this meter:
2J` P1510
Thank you. By the way, what's the difference between and ESR meter, multi-meter and an LCR meter?
God bless, Happy Easter! He is risen.
@@SevenDeMagnusLCR meter measures (L) Inductance, (C) Capacitance, & (R) Resistance.
ESR meter measures (E)quivalent (S)eries (R)esistance.
Wow thank you. It seems the capacitor ESR is on a list where are you reading it. is there a list that I can download from somewhere please?
A quick search brought me to this page. All these lists are for approximation only
solidpost.com/doku.php?id=electronic:standard_capacitor_worst-case_electrolytic_esr_table
@@TrevorsBench thank you so much
Some chinese manufacturers actually put a small capacitor in a big cylinder and write a high capacitance value on it.
Everything is being made as cheep as can be and faced. I used to voltage test caps bit not done it in years. Maybe I should start again.
I have used this brand for at least 5 years and not had any of the poor results you did. I just do not use them anywhere critical. I have at least 3000 caps like this and can pick any at random and they're in spec. Maybe you have fake copies of really cheap caps or just duds. Just test what you buy.
I've bought thousands of Chinese caps and never had a problem (yet). These duds came from a unknown source and really belong in the garbage can but somebody thought they could profit from them.
Why would any repairman/builder try to save a few pennies and risk failure?
Oh yeah, my actual brother would.
We all do it, it's natural instinct to want to pay less for anything
you got a bag of aluminum firecrackers
Very festive.
What sort of leads (clips) are those and where do you get them?
I bought 2 6800uf 50v capacitors of this same brand (Chongx) for a vintage subwoofer amp. After seeing this, I didnt use them and I bought the original brand that it had in it. Thanks for this video. Ill never buy these again. They are about half the size as the original so i knew something was amiss when i saw them. The capacitance was 6100uf when i tested them on my Fluke 12 meter. My original caps read better than these cheap new ones by Chongx. GARBAGE! They were like $5 on ebay new. Do you think 6100uf is below tolerance for a 6800uf cap? If so I can return them at least for a refund.
5440uF is 20% under. 6120uF is 10% under spec. What is the tolerance on those?
I actually pulled chongx caps out of a device in my house, why would any company use those crappy caps in their product, why, just why.
Lowest costs for maximum profit, it's human nature
I bought an assorment of capactiors from alixpress some are chongx and others are different brands is it okay to use the other brand ones or no?
I couldn't say. They would need to be tested
Sometimes you also get a nice welt from these things lol You would think a $100+ florescent green fishing light would have better components. It had sat for a few yrs but still new in package the 2 transistors were rusted out just installed new ones hooked it up to a 12v lantern battery blew the chong capacitor 25v on negative side. I guess I won't replace it with another Chong after seeing this lol
I bought some smd aluminium capacitors and they where meant to be 470uf but instead they are only 427uf
That's fairly typical. Aluminum caps usually have a tolerance of 20% and those are probably just fine for new caps. It's when the capacitance changes drastically and no longer does the job it's supposed to do we consider it failed. There are no 'precision' aluminum caps available because they rely on an electrolyte to work
So does that mean that they would be okay to work with or should I avoid using them ?
@@davidferguson8478 The value is ok and should work. I don't know how long a life they will have
NOTE the capacitors may contain an corrosive chemical Exploding them will release it into the air.
All capacitor brands can have a failure. During the capacitor shortage in early 2000 even the quality company made some bad batches. They should recall and destroy any questionable batches but some companies may let the workers take them. Digi Key is not immune to bad parts. There purchase quantity may allow them to buy from the factories direct and avoid the bad middle man out to make a buck or yen. Digi Key is a distributor not a manufacture. Ali express ebay and Amazon are not manufacture they are electronic store front . Your Apple phone is a cheap" made in china" phone with a US mark up.
Yes I think these are factory rejects. The china people can buy them or get them free resell on ebay or etc... I only buy from Digikey or Mouser. I too have spend alot of time wondering why my circuit didn't work. No more china parts for me. Those caps you have I would throw out. Get them out of my shack. Not worthy.
Cheech and Chong-x capacitors...... still smokin' ;O)
sarebbe bello un test con i vari elna nichicon ecc presi su aliexpress complimenti bel video👍
In those 2 years of my last comment i had about 4 chongx capacitors exploding on me even though I changed to the exact same voltage as the old one. Other china caps though I've never had any problems with.
Caps are like most mosfets on AliExpress, manufacturer rejects, and sometimes MUCH WORSE, ...it's a gamble!
ChongX is the Chinese copy Chinese better quality called ChangX (Real ChongX come in green label and gold letter.
I use 25v chongx caps instead of 25v original caps In a Power supply for that price they're ok working since 1 year not exploding
Oh wow, I bought a kit last year and I thought they'd just be less heat resistant or something but ugh… At least mine came with a plastic box with cases so I can still use that box for something 😀
Guess the X is for bad and the actual brand is Chong?
They are a clone of ChengX
Can you tell me where can I buy cheap Wurth Electronic capacitors like you did? Thank you!
I buy all my Wurth caps at DigiKey
Their other popular product is ChongX model rocket igniters
They would probably fail in that application too
Thanks for your information
I always buy Japanese brand capacitors from a reputable website. Only once I bought Chinese capacitors and noticed it was crap, never again. Why would you buy such cheap crap? Buy a good, but little more expensive brand and in the end you're better off. And no I'm not Japanese as my name here says, but Belgian, my girlfriend is Japanese.
I also buy japanese capacitors, mostly Chemi-Con and Panasonic. And I never had problems with them.
wel i know now why all my TL light blow . thanks for sharing .
Do you think these capacitors of 16V will work ok for a project that uses only 5V's?
I wouldn't trust these caps in anything
Wurth Electeonics capacitors are rebadged Chinese Teapo capacitors if I remember correctly. So not necessarily because they are made in China they are bad.
Teapo's aren't that bad, but still no quality caps. I'd say they are somewhere in the middle.
I have had custom designed digital switching power supplies which for many people can create way more heat on circuits these use high grade caps but it is the design that is flawed they run a group of chips which have 10 of thousands of transistors which will run on 2vdc but they step down 12vdc to 2vdc here is the catch the amperage must be far greater to run 10 of thousand transistors on chips they do not allow for that so your circuit gets hot because it is amperage starved. If you give it higher amperage at this 2vdc voltage it runs cooler. All your digital supplies which run your TV, Computers, even batteries suffer for this. I have had digital Switching supplies start electrical fires because of this . No change in demand just normal operation without any modification. Too much heat is the tip off that heat is dangerous.
Everybody knows the voltage in China is different than other parts of the world. Oh and I heard that positive is - and negative is +. Ok, they are most likely just “regrade for alternate use” caps from capacitor assembly line testing.
I see many electronics repair people having better luck with brands like Nichicon, Rubycon, Nippon Chemicon, Panasonic, Illinois Capacitor, Cornell Dublier, Elna, Sprague, etc.