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I want to make my own design based on a current design. I need to know what diodes are being used on this reference board. Any help is appreciated. Thanks in advance.
Looks like something real generic, without markings. That
probably means you get to figure out your own specs and
source something "good enough". Although you might get
lucky and on desoldering, find a clue or at least a designator
that, if you're extra lucky and turn up a service schematic,
might let you trace back to a declared part type number.
Might start with BV (at least 2X the worst case observed
reverse voltage) and measured Vf@If; a couple of points
at higher current will also give you Rs. If it's a switching
app then you need to measure Trr and maybe Cj0. All of
these are within the grasp of standard bench equipment,
although the C might challenge some DMMs to resolve.
Diodes is diodes, pretty much, each one has something
different about it but often the only thing it came down
to is price.
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