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- Posted on
February 2, 2011, 11:57 pm
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Re: Can anyone identify C858 011 black plastic package
** All you need is a multimeter with a "diode test" function.
Find the B-E and C-E junctions and you have it nailed as a transistor and
you know which is the Base.
The C-E junction has a slightly lower forward voltage than the B-E one.
FAIK - all TO-220 triacs have the same pin out.