I decided to further test the ones I had pulled out of various pieces
because of the leakage. I know they test as a diode. The round lead 0367
types with the oxidation on the leads close to the body test as a diode
from E to C. The square leaded ones of both numbers tested as a diode from
C to E. I used a VTVM on Rx1 for the leakage testing. I then wondered how
the round leaded ones could operate properly or at all with the leakage
from E to C. I found this to be an interesting test on these transistors. I
am not sure why the leakage reversal unless it was a production change. I
know and have seen transistors go bad with age even operated light-duty.
The 0402 I have only found in the 7D15 plug-in. The ones with a blue
face did not have the diode leakage. Those must be a late production run.
Mark
