A month ago this issue came up in a design of a supercap-powered microcontroller circuit. It was exactly the scenario you described with two voltage sources. I discovered a low leakage schottky which saved the day (and the project!) I'm sure your video will help orhers. Thanks.
Professor Ben-Yaakov, there was also a high current germanium Schottky diode that was made by Germanium Power Devices about 25 years ago. It had a Vf of roughly 180mV at 10A. I have a few, however I never tested them for reverse leakage. Thanks for another excellent video tutorial!
Thanks for input. As far as I remember Germaniums diodes in fact preceded the Silicon diodes. Some are still sold e.g. 1N270 but I don't see that they have a low forward voltage. I vaguely remember that the diodes I have used many years ago did have a low forward voyage. But I may be wrong.
Another case where this could be a problem is when the diode is intended to prevent a primary backup battery from being charged by power supply. Some Li coin cells have a very low acceptable current in the wrong (charging) direction.
The same relationship between forward and reverse leakage current is true for Schottky diodes made from any semiconductor. I have had to consider it when designing and using GaAs and InP based Schottky diodes.
As usual: short and to the point. It makes a real pleasure for me such video. Thank you for them.
Very good information for crystal radio nuts, too.
🙏Indeed
A month ago this issue came up in a design of a supercap-powered microcontroller circuit. It was exactly the scenario you described with two voltage sources. I discovered a low leakage schottky which saved the day (and the project!) I'm sure your video will help orhers. Thanks.
😊Thanks for sharing.
Nice presentation dear Professor.
I think the same comparison for reverse recovery current of diodes would be great with applications included.
Thanks
Thanks for suggestion. Will try.
Professor Ben-Yaakov, there was also a high current germanium Schottky diode that was made by Germanium Power Devices about 25 years ago. It had a Vf of roughly 180mV at 10A. I have a few, however I never tested them for reverse leakage. Thanks for another excellent video tutorial!
Thanks for input. As far as I remember Germaniums diodes in fact preceded the Silicon diodes. Some are still sold e.g. 1N270 but I don't see that they have a low forward voltage. I vaguely remember that the diodes I have used many years ago did have a low forward voyage. But I may be wrong.
Thanks professor, you always have good content to share!!!
👍🙏
Thank you professor ❤
Thanks
Thank you for your videos.
🙏👍
Another case where this could be a problem is when the diode is intended to prevent a primary backup battery from being charged by power supply. Some Li coin cells have a very low acceptable current in the wrong (charging) direction.
Good point. Thanks for input.
muy bueno........ 😀
Thanks
The same relationship between forward and reverse leakage current is true for Schottky diodes made from any semiconductor. I have had to consider it when designing and using GaAs and InP based Schottky diodes.
Thanks for important input.
As always, great presentation. Thank you.
Did you collect such topics in some book we can buy?
Sorry, no. But you can prepare a video playlist😊
The BAT63 diode is the most amazing, but I think may be very sensitive to ESD.
Thanks for input. They are fast. I don't think there is a problem with ESD.
How much reverse current will destroy an Schottky diode?
Does it survive reverse current like Silicon diodes?
Static reverse currents will not destroy the diodes.
I must be sleepy , I read this as satanic verses of schottkey diodes
😀