"Ed Angell" edangellatcomcastdotnet wrote in message
...
Sorry for the OT post, but I don't know a better group of knowledgeable
folks to ask.

As long as a triac is run within it's published temperature limits, is
there
any shortening of their life due to running warm ??

I can't give you a scientific answer, but I used to run thousands of
triacs in outdoor traffic control boxes in south Florida. We seldom had a
failure that could not be explained by lightning or a short circuit.

Vaughn