TOSHIBA TLP521-1/TLP521-2/TLP521-4 Manual(1)(1)

TLP521−1,TLP521−2,TLP521−4 are models of Toshiba photocouplers, consisting of a phototransistor optically coupled to a gallium arsenide infrared emitting diode. They have features such as 55 V collector-emitter voltage, 50% current transfer ratio, 2500 Vrms isolation voltage, etc.