2014. július 4., péntek

Fotek SSR-40DD Teardown

I tear apart the SSR producing 4V voltage drop. Removed most of the rubber and plastic crap inside.
Here is the result:



The key components:
  • Motorola H11 optocoupler
  • NEC 2SA1009 BJT (This is mostly an assumption, because it only have a A1009 sign on it)
  • ST BUF240A BJT
A silent note: using a 30A BJT in a 40A rated equipment maybe not a good idea.

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