You should at least post a picture and say where you pulled them from.Dear sir.
I have some black in plastic case diodes marked as 31DQ0681.I want its data sheet please give me its data by which i can use it.thankings regard
"Black in plastic case" describes, oh, 10 million diodes?
In any case, those might be:
http://www.mouser.com/catalog/specsheets/9332031d.pdf
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