All ProductsPanasonicSemiconductorsIsolatorsOptoisolators - Triac, Scr Output PANASONIC SemiconductorsIsolatorsOptoisolators - Triac, Scr Output APT1211WA OPTOISOLATOR TRIAC OUTPUT 5000VRMS 1 CHANNEL 4-DIP MFR. Name: Panasonic APT1212 MFR. Name: Panasonic APT1221SX OPTOISOLATOR TRIAC OUTPUT 3750VRMS 1 CHANNEL 4-SOP MFR. Name: Panasonic