I'm pretty sure it is a Teccor triac.  Teccor is owned by Littlefuse now.

-- Ralph

Todd                      Zuercher <[email protected]> wrote:


I need to find a replacement for this transistor (Since I don't know what else 
to call it).
I attached a bad photo of it. The numbers on it read Q797 at the top and the 
bottom right corner has L7 and MEX.
It is the main chip on a large dimmer board, it is used for some of the 
sanctuary lighting at my church. It controls a light circuit with nearly 20 
amps.
I thought I could fix it if I could find a replacement but Google hasn't been 
much help for me on this.
Any one have a good Idea what it probably is? And what might be a good 
replacement part?

--

========================================

Todd Zuercher
mailto:[email protected]

========================================

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