Features of  TLP293-4GB-TP.E  Collector-Emitter Voltage : 80 V (min)  Current Transfer Ratio : 50% (min) GB rank: 100% (min)  Isolation Voltage : 3750 Vrms (min)  Operation temperature range: -55 to 125 ˚C Programmable Controllers Switching Power Supplies Simplex/Multiplex Data Transmissions