3 ms·
Yep. It is indeed easy to ruin a FET with minuscule amount of static charge. That is, unless there is a zener (or two, back-to-back) connecting gate to source.
by aexaey 10y ago
Yep. It is indeed easy to ruin a FET with minuscule amount of static charge. That is, unless there is a zener (or two, back-to-back) connecting gate to source. Many modern FETs have this built right in. E.g. ATP214 [1].
[1] http://www.onsemi.com/pub/Collateral/ENA1712-D.PDF http://www.onsemi.com/pub/Collateral/ENA1712-D.PDF
- Obi_Juan_Kenobi 10y agoThat does sound like a very useful part for learning purposes, as well as general robustness, but they don't appear to be particularly common. I get no results on eBay, nor can I find through-hole packages. Do you know of anything available like that?
- mrob 10y agoNXP makes a version of the popular 2N7002 with ESD protection: http://www.nxp.com/documents/data_sheet/2N7002CK.pdf http://www.nxp.com/documents/data_sheet/2N7002CK.pdf Surface mount only (like most modern transistors), but SOT-23 isn't too hard to hand solder. There are lots of breakout boards for surface mount packages available for prototyping, or you could even solder some mod wire directly to each pin and put some hot melt glue on it to keep it in place.
- nomel 10y agoHere's a great example [1] of using static charge to activate a FET, as a proximity detector. [1] https://www.youtube.com/watch?v=HwC6EHah9xI https://www.youtube.com/watch?v=HwC6EHah9xI