On Wed, 09 Feb 2005 08:21:33 -0800, Ed Angell wrote:

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 ??

Yes. The lifetime of a semiconductor device is directly related to its
operating (junction) temperature. The cause of eventual failure (assuming
operation within the envelope) is a result of migration of material
within the junction, which is exponential with temperature as I recall.

Whether the reduction in lifetime is of concern depends on how hot the
device runs, how close to rated limits it is used, and what transients it
will be exposed to.

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The instructions said to use Windows 98 or better, so I installed RedHat.