Quote:
Originally Posted by Philips210
As G6Tanuki points out, the drain and source are interchangeable in many circuits.
|
Not usually on Jfets, especially depletion as they are not symmetrical. Just like Bipolar transistors DO work reversing C & E, but only then less than 5V HT (low Veb zener action) and about 1/10th gain. The CB is avalanche mode breakdown rather than EB zener)
Not on IG-VFETs, because a parasitic Drain Source diode. Sometimes called MOSFETs.
I think only reliably on Enhancement mode IG-MOS-FETs without the inherent diode on Drais/Source. Hence they are used as transmission gate switches.
I'd use a J310, better and cheaper and easier to get than 2N3819.