Thus spake ian field:

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.

The other diode ("good" one) in the circuit measures 0.4v in DMM diode test
(Fluke meter). Not glass, epoxy (black stuff).

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

Infinite both directions, according to diode test on the DMM.

Is SB type used as rectifier in SMPS? Or is vanilla Schottky used in this
application?

Thanks,
--
DaveC

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