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Robert Wolcott
 
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Default Testing a photodiode

I have a silicon photodiode and I'm unsure if it is working or not. How
would I go about testing it? Things I have done so far:

Measured the resistance - 50 megs in either orientation, regardless of
lighting condition.
Measured resistance with a 5mw diode laser shining on it.

Anything else I should do? How do these typically fail?

Thanks,
Bob