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Default Diode identification?


"DaveC" wrote in message
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From Japanese SMPS, looks like regular 1A rectifier diode. Labeled B320219
(the "02" is larger type than the others).

Can't find cross-reference. Any help would be greatly appreciated.

Thanks,
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DaveC

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If testing it shows slight reverse leakage - it could be a Shottky-barrier
type, Most DMMs have a diode forward voltage test if the Vf is less than
about 0.4V and more than 0.1V it almost certainly is SB, if its glass
encapsulated - consider the possibility it's a zener, these show Vf about
0.7V, regular diodes show about 0.6V and fast silicon types usually
somewhere around 0.55V.

But if any of these tests pass - it's probably OK anyway!