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This reference design is an ON/OFF controller using a Silicon Controlled Rectifier (SCR) and CD40106 CMOS hex Schmitt trigger IC. In this design, the SCR acts as the control element that is driven by a digital logic. This design uses Vishay’s VS-50TPS12L-M3 SCR, which is designed for medium power switching. This SCR can withstand high voltages and utilizes glass passivation technology that has reliable operation up to 150°C junction temperature. Read More