S21MD4V S21MD4V .. s Features 1. Built-in zero-cr.
S21MD4V - Built-in Zero-cross Circuit/ High Noise Resistance Type Phototriac Coupler
S21MD4V S21MD4V .. s Features 1. Built-in zero-cross circuit 2. High critical rate of rise of OFF-state voltage ( dV/dt : MIN. 100V/ µ s ) 3. High re.