Thursday, 15 September 2016

efficiency - AC-mains capable SSR (Solid State Relay) with very low leakage current?


Requirements:



  • Can switch 230VAC

  • Can switch at least 0.5A (i.e. ol' good 100W incandescent lamp)

  • Wastes no more than 3mW in off state

  • Low-on resistance is always good too



The stated power usage translates to under 15uA of leakage current.


Unfortunately, I was able to find stated leakage current only in low-current (Io.max < 200mA) devices, e.g. HSF2 (10uA), HSSR-8400 (<1uA). Whenever Io.max is stated at ~2A, leakage current is 10+mA. Do higher-current, yet still modest leakage current SSR exist? Alternatively, can someone point to "raw" thyristor/triac with similar specs?




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