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replacing triacs

Nigel Goodwin

Super Moderator
Most Helpful Member
Didn't give much chance for a reply did you?.

Try one and see, the original number is almost certainly an in-house number, so completely meaningless - so no way to find out it's specs.

In general triacs are pretty interchangeable, and just powering the pump is pretty low power anyway.


New Member
the UController interfaces an ULN2003 wish drives a MOC3051 wish drives the BCR2A (two amps surface mount triac ) that drives a low power draining pump on a washing machine , now if i change the BCR2A with a BT137 through hol triac of 8 amp would that damage the MOC3051 or the U Controller ? if no one knows, a document of triac types and there triggering technics would be very helpful

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