Michael W. Lynch
On Thu, Oct 1, 2020 at 04:03 PM, Eric wrote:
You read my mind. Yes, I actually have both a 576 and 577. See my reply to Tom below. That "suspect" diode exhibited a "normal" zener trace then suddenly broke down and I got an almost "tunnel diode" looking trace just before the trace went straight vertical. Both the 576 and 577 showed similar results after a minute or two of testing. The 475 is sitting on the bench now and looks perfectly normal after about 30 minutes of running.