EEVblog1541 - What is this Blown SMD Component? Redux
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- เผยแพร่เมื่อ 28 พ.ค. 2024
- Searching for another blown SMD component.
Another blown SMD component ID search : • EEVblog 1475 - What's ...
Twitter thread: / 1652769442080620549
00:00 - Failed Hantek 2000 handheld oscilloscope
02:08 - PCB location is your best clue
04:21 - Voltage regulator maybe?
06:01 - You gotta ask yourself, do I feel lucky? Well, do you, punk?
07:38 - Dialing in that google foo
08:20 - Winner Winner Chicken Dinner
09:54 - Test Pins
11:17 - Can you play spot the difference?
13:43 - Category Search
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#ElectronicsCreators #Repair #smd - วิทยาศาสตร์และเทคโนโลยี
SK seems to correlate with the manufacturer name Shikues. Looking further down, BRCL prefix components are made by Foshan Blue Rocket Elec. My guess would be that something is going on behind the scenes with company names and part sourcing. Maybe the company changed its name, or maybe it trades under several brand names. This seems not unusual in China.
Nicely spotted. That seems the most likely thing, because the datasheets and specs look identical, no one has found a difference yet.
@@EEVblog "second source" ??? (blast from the past)
8:21 Ah yes, the 100 "ohmy” resistor. 😂
Oh my!
When the magic smoke comes out, you say "oh my!!!"
Love it! A tiny 100-ohmy resistory, with a 1 uFarady capacitory.
I have a flashlight that uses a single 18650 for power and I inadvertently put the battery in backwards once, and it blew a similar part to this. I would put money on that is what happened here. The battery are supposed to go in with the same orientation, but we are so conditioned with AA/AAA battery powered devices to alternate orientation, I bet someone did this without even thinking about it.
Dave,
After 40 years of reading data sheets, my number one pet peeve is still when the data sheet writers put two or mover versions of the part on the same data sheet and don't tell you the difference in the very first section. Packing codes is one thing but functional differences are something else. I have had data sheets where I had to call the manufacturer and ask, at times even the rep couldn't tell me. Would be so easy to say the B version has improved specks, is a product improvement or provides alternate function on pin 6 etc. At least I would know where to look in the data sheet for the details. Can't even count the number of hours spent comparing data sheets looking for an answer.
Don't even get me started on connector manufacturers...
I notice quite a bit with the western semiconductors, looking at mouser and Digi-Key there will be like 4 SKUs for the exact same part. Only difference is the tape reel part # buying in a box, tray, whole reel, etc but won’t make a difference in the min qty you have to buy from a distributor. It only applies when buying full sets from the mfg.
@@bobert4522 This one used to drive me nuts. At my employer, it used to be the circuit design engineer would have to fill in the correct suffix mfg part numbers when pulling a new one. How am I to know what size and type of reel the plant would prefer today!? Seems like even after wasting time asking, I would get it wrong and then have to sign off change orders later on to change reel size or was it paper tape vs plastic, etc. Tubes, vs trays and on and on.
This was before the company got large enough to have a component engineering staff and now all I need to care about is the actual part number w/o all that packaging stuff. Those folks can concentrate on those details.
@@eeengineer8851 yeah sometimes the extension just tells you whether it is on a 7" or 13" reel. You get to recognise the codes if you do purchasing long enough. I guess you need to have a rapport with the people running the SMD line which fortunately I do.
One of the reasons why Right to Repair should go global.
Right to repair is more a moral question that needs to be addressed properly
Should engineers who spend months knocking out prototypes solving issues, tweaking it and then it's mass manufactured to bring prices down
Would you want all your hard work to then be freely given out for people to copy? Intellectual property vs right to repair
@@cjdelphi Bullshit. I'm old enough to remember TV with schematics taped to the inside of the case. It wasn't an issue then and it is not an issue today.
@@cjdelphi Most having the resources, supply chain, to make a copy, probably also have the capital and skill to buy a few of said product and reverse engineer it. That isn't an option for regular users who just want a working product.
@@martinfinne7259 would you be happy to hand over a schematic that took you years to perfect? It's purely a moral issue for me
It wouldn't be too difficult to print on the board the name and value of every component, most people who repair would simply find a spare board locate the component desolder and swap
That's how the electronic repair industry goes quicker to look for blown and shorted components and leaving boards that have gone open loop, a thermal cam for example
Most of the time a multimeter and patients is all you need to locate most issues and then back to the highlighted problem in this video, wtf is the blow component
Maybe there is a better way, instead of companies releasing schematics, component values with absolutely everything given away. Some kind of website or app that allows you to look at some company's intellectual property which might have say over a 1,000 components and you can zoom in to that location and get just those specific values
Or let the right to repair and release the schematics for non profit and charge people who make a living a fee to access the data
There has to be a middle ground everyone is happy with
Just a parts list goes a long way. Like this example if the part is given, you can buy it and repair it. There is no need for schematic. Appliances come with an expensive parts list so no issue there. If you need a detailed electrical schematic they the repair would be to extensive for an everage user anyway
I love to see this kind of "old schoool" videos back on your channel lately. fundamental fridays was one of my all time favourite series, but component identifications and fixing makes a huge part of the charm of your channel as well. I'm glad you're getting back to the more "electronicky" topics instead of unboxing, ranting and fixing brymen multimeters.
I personally love the rants, especially those against solar roadways/bike paths, etc. But I do agree that the fixes and part identifications are really entertaining too.
Got real lucky on this one, as soon as he said lithium i was thinking charge/battery management. Searched '3130 charge ic' LCSC top result, aliexpress no 2.
Not sure if you saw it, but the first one you looked at said "Not recommended for new designs", so I'm guessing that revision/version has been discontinued and the newer code is now the one they make, but seems like there's no functional difference, just maybe re-numbered them for some reason and "obsoleted" the older one?
I saw the title and thought this was going to be about a Commodore 1541 floppy disk drive!
This is GOLD. Thank you Mr. Dave!
CA3130... blast from the past! That was a nice op-amp for the day, used that a couple of times. But expensive.
It can use a low voltage supply and works rail-to-rail. I used it e.g. in a FET voltmeter (took an analog 20k/volt multimeter and added a FET stage for high input impedance).
It's a very helphul and informative video. Thank you, Dave!
Could you just make a whole series and eventually TH-cam playlist of the episodes. Man, I have learned alot from this! Thank You
I was under the impression that Google ranked its offerings according to what you had previously shown an interest in.
I assume that you had looked for these data sheets previously and so Google put them top of the list. The same applies to the vendor LCSC.
Try a incognito search to see if you get the same results. Someone smart will correct me if they see fit. I'd appreciate it if they say whether you need to clear your cookies also?
Learned a lot from this video. Thanks Dave!
The problem is that the device that blow up, may not be the source of the fault. So you replace the blown component, only for it to blow again, shortly after the device is switched on. This is like replacing the fuse without discovering the short that caused the fuse to fail.
In this case the real fault maybe in the charging circuit.
A cascade failure is far more difficult to fix, as the source of the failure may show no signs of damage. The question to ask is why did this component burn, was it the battery, the charger or the component itself.
On this basis, buying one replacement part for the obviously damaged part might not be the best idea.
Yep, but you have to start somewhere, and the part is obviously blown. So either way it needs replacing.
@@EEVblog might be a good idea to buy at least as few replacements. My bet is on a battery fault, as the similar part, on the other battery is still intact. This suggests the charger is not at fault. Worth checking the battery voltage, before switching the equipment back on, as it might indicate a dead battery.
It's obvious, he put a battery with the polarity switched
@@fss1704 a reasonable explaination given tbe part appears to have active thermal protection in normal operation.
@@nigeljohnson9820 yup. I used aftermarket batteries. (higher amperage, and strangely enough, slightly bigger diameter) The smoke was released shortly after that lol
You also sometimes need to try all the variations, since not all manufactures use the dashes the same.
eg SOT-23-5 SOT23-5 SOT235 SOT-235 etc..
I had a feeling it might be a MOSFET because it reminded me of one I replaced on my Intel NUC. Turned out a downstream bypass cap had failed short and killed it. I popped the cap off and replaced the FET and it was fine. I should probably put a replacement cap back one day.
Not if it still works. Muntzing?
@@VeritasEtAequitas Absolutely. Tolerances often leave a lot of slack.
After watching many Bigclive videos, seeing an RC circuit with 100ohms on one line, ground on the other and it's "near a battery" automatically told me it's some kind of DW01 variant with integrated mosfet.
Good stuff. Definitely do more of this type of video!
Thanks for the tip. LCSC looks like a really useful website.
Another valuable lesson from Dave, thanks a lot!
Oh look Dave’s fixing a 1541 disk drive…
No wait …
So much internal protection in that chip but it still blew up.
I just searched for 3130 smd and it came right up. I find that just adding smd after the number works most of the time.
Darn. I was guessing pins 4 and 5 were connected because one was enable and the other was ground (or power).
Yeah, not unreasonable to assume that. Especially given the single ground pin.
i put 3130 sot 23-5 ic marking on google and first result was a datasheet from LCSC, which happens to be the datasheet of this exact part. I dont know why that guy was having so hard time searching for the part number. anyways great video as usual.
I googled sot-23-5 3130 as the video was playing and got the same first hit on the LCSC data sheet. Finding a part's data sheet is not always this easy, but I usually start with a simple search such as you did.
Buy new product. Dismantle and take pictures so component IDs are not a mystery after the magic smoke.
Also a good chance to find the datasheets and store with the product PDFs. Just google the cryptic code and package type will often find the data sheet.
Dave could name himself EEVbolt and name this series Partsguessr.
Just blew one up yesterday 😅 Removed 18650, put bench supply on instead. Plugged USB in - smoke released. I guess it didn’t like „charging“ my bench supply
In the middle of the video I just went and searched '3130 marking sot23-5' and boom.
Direct to battery generally a standard battery protection unit, with integrated mosfet. The RC on the pin is a give away as input filter. They probably are in series cell wise, but probably the reason the one fried was a battery put in incorrectly. Yes plenty of different pin compatible ones around. Most likely the difference between them is either cut off voltages for different battery types, and current thresholds for the various use cases.
I couldn't see any difference in the datasheet though, maybe I just missed it. Specs identical.
@@EEVblog Could also be a different grade part, one tighter tolerance than the other, or the datasheet is incomplete, and one is a special selection out of the general batch.
@@SeanBZA Yeah, you expect it in the datasheet though, so if no one can find any difference, then it must be incomplete.
My method of searching the component is to search in google image and search the code + package type, if no result delete some few last character and search again. Works 80% of the time
YEAH THIS IS WHAT HAPPENS when chips are crazy small.
was probably running too hot as per usual design.
you know if something fails ---> replace with the exact same part and pray for better results 😇
6:20 - SKCL3130ME - Just under the cursor. Pinout match in DS, typ. application match. Remaining 9min of video saved
lol when theres a big block in the middle just labelled "logic"
Probably just a bunch of OR gates in this case.
@domtom128 the point isn't "I want to know what it is", it's "it's funny that the block diagram has basically one block which is 'magic inside'"
SK referring to a manufacture line of semiconductors maybe. AnaLog on ECG, NTE, SK Replacement Semiconductors. SK was started by RCA. Glad I watched this blog. I am wanting to build LIon battery supplies and chargers for several pieces of test equipment to eliminate having to replace regular batteries. Maybe this 3130 might work.
Use a TP4056 or TP4057 module from any online source. Under $1 including all the ancilliaries and a USB socket. Make sure to buy the modules that have 3 chips total, which are "protection" ICs (usually a DW01 and a dual mosfet) if your Lithium cells don't have an inbuilt protection PCB.
You can also get the voltage regulation you need from tiny Buck or Boost modules also freely available for under a dollar. There is absolutely no need to design anything whatsoever.
Yep, battery management MOSFET. They always blow like that in these chargers. Because they are small and don't have much heat sink area in their little case. Perhaps gluing some kind of beer tab on it might help, once it is replaced...
I ordered some to replace one exactly like that from an independent scalper, and they sent me a batch of other ones that are smaller and have a different part number. Naturally, they didn't work. So now, it's a matter of ordering some from somewhere else. They're so cheap it's not worth sending them back. Maybe a buck a bag.
He put a batttery with inverted polarity
De majic smokes is amazing 😂
yes that stinky magic smoke :).
Weird thing is that it always smells the same...and lingers forever.
Integrated advanced MOSFET
In your first search... of 3130 PDF one of the results near the top did actually have a part number matching and was described as a SOT23-5 package... but did you miss it??? (visible at 6:20). I am sure you would have found a good match there as that takes you to a "high integration solution for lithium-lion/polymer battery protection " one...
This problems will resolve easily if the If governments force brands to publish the schematics, boardviews and eeproms/nands/emmc files of the products they distribute or are sold in a country, if they do not do so, would be prohibited from selling any of their products of that brand.
love it!
"100 ohmy" was actually written on the data sheet? 😅
What you might want to try: give a textual description of some of these things, marking, pin connections, and feed them into a recent chat gpt that has seen datasheets...
Turbo encabulator
I've seen a few linear regulators in that kind of package, could be anything as you are fully aware
I'm more curious about why multimeters give a capacitance reading when measuring an inductor
In my head measuring an inductor should read as an almost short with no capacitance until you stop measuring it letting the magnetic field Collapse?
A main reason they don't share the schematics is so they can sell them for additional profit.
You'd still want to know why it blew. Maybe the smd cap just below it failed such that it shorted the two traces.
Image websearch can be handy
I remember trying to figure out a name of sot-223 component. The code was "N52A". It was some PWM-controller but i could't find anything on it and just gave up by asking people on forum. In 10 minutes some guy awnsered me that it is a "ncp1055". I asked how did he found it. He sad he just taped in google "smd marking code sot-223"
Don't you just punch in "3130 SMD code", ie, it came up straight away.
Yeah, guy asking Dave to find this info is kinda hopeless..
Bob’s your auntie!
Now the big question of course is: "what happened"?
Maybe the battery was inserted the wrong way around and this IC does not have the protection to handle that?
YES!
Is there a video, or have you made one explaining the different types of packages and how they get their name? I'm still new to the whole SMD packages.
It was there in your first search at 06:19!
Yes. He said as much too.
Looks like a single cell BMS IC to me, having one hanging from the - of each cell.
UPDATE... called it LOL.
That's what I was thinking, Dave...Did something else fail to cause the "Magic Smoke"?
Battery with inverted polarity
Now do it in Bing!
Cool video!!! Hello from Russia!!!
Dave, it is better to find the fault at the design of the product. Like what mistake did they make to make the part broken.
Yup this is my life right here :(
Heck, I don't even have schematics for some products I DID design! :)
It's useful
Not a very good part if reversing the input voltage kills it (presumably).
It's a bit distracting when your browser shows the unvisited search results as visited. I start thinking I'm looking at the wrong thing.
With chips like that, my favorite debug tool is a rheostat. Bypass it a bit and see what happens.
Looks like a Mosfet
Mr Clinton would have scored more likes?
3130 5 pin battery
3130 Lithium battery protection IC (3:09 is where I am currently) Pin 1 is a test pin so not normally connected. The crispy critter still has part of the 1 and 30 visible. Always fun repairing sans schematic - just did a dishwasher control board. 5 capacitors down (after 10 years of use) - replaced capacitors, unit working again.
The BR part is manufactured in the name only for the brother-in-law of the company's owner... After the owner's wife pressuring her husband to get her worthless brother, who has never worked a day in his life and parties a lot, be a part of the business. The owner does not want this dude to be involved in his business but having started his company with his late father-in-law's large investment at the beginning, he feels obligated to include him somehow. So, the owner names the otherwise identical part after his brother-in-law to keep his wife happy???
Most electronic components are essentially, free.
Now, the BIG question: why exactly the original failed in the first place!
A human who didn't look at the battery polarity, and poor design.
@@EEVblog ah, typical PEBKAC! :)
I had one die because a bypass cap failed short. Luckily that didn't kill the replacement and after I popped the cap off, everything was fine.
a Chinese - spy keylogger device or some ting
Nope, probably a battery manage chip or something. Do not attract china to everything they probably already have your information from cookies or google or they put a spy chip in your phone. But i don't believe that
What is this Blown SMD Component? Easy Answer! Totally Buggered!
It's a Burn Brown ADC.
The fact that "BR" comes up on the searches suggest that is the "common" one
That look more like a standard 5 pins voltage regulator, capacitors around it might be a good hint. The 01A resistor value which is R100 ohm could be a current limiting resistor if this is an LDO.
It could also be a dual SOT23 MOSFET built-in.
Did you write this comment without watching the whole video?
It's not a voltage regulator. You're close with the MOSFET guess...
@@TheHuesSciTech Basically yes, Based on my experience I could nairrow my guesses, but watched most of the video after the comment
These are really common in UFO’s, according to a friend of mine.
list possibilities chip used in a battery application marked 3130, 5 pin SOT-23
ChatGPT
A chip marked 3130 in a 5-pin SOT-23 package used for battery applications could be a variety of components. It might be challenging to identify the exact chip without more information, such as a manufacturer logo or additional markings. However, here are some possibilities for what the chip might be:
Voltage regulator: A low-dropout (LDO) voltage regulator can be used to provide a stable voltage to the system powered by the battery. Examples include the NCP3130 from ON Semiconductor and the TPS76330 from Texas Instruments.
Battery protection IC: A battery protection IC is responsible for monitoring battery voltage and current to protect the battery from overcharging, over-discharging, or overcurrent conditions. An example of such a chip is the S-8241ABPMC from ABLIC Inc.
Battery charger IC: A battery charger IC can be used to manage the charging process of a battery, such as controlling the charging current and voltage. Examples include the MCP73831 and MCP73833 from Microchip Technology.
Battery fuel gauge IC: A battery fuel gauge IC estimates the remaining battery capacity, providing information on battery state-of-charge (SOC) or state-of-health (SOH). An example is the MAX17043 from Maxim Integrated.
Voltage supervisor IC: A voltage supervisor or reset IC monitors the supply voltage and triggers a reset signal if the voltage falls below a specified threshold. An example is the TPS3125 from Texas Instruments.
My 2c worth - for a faster, focused search, type "SMD 3130" when hunting for devices.
It's a SKCL3130ME SOT23-5 3.3V regulator, it's not rocket science laptops & many other devices use them & there very common.
That's not a regulator.
Your Google searches only worked after you found it once. LCSC are great for info but they have a USD500 MOV when i have asked them for stuff.
I'm sitting here watching you search for all these functions and types of component... meanwhile... you said it's a 3130 and SOT23-5? *googles "3130 sot23-5"*