TOSHIBA Photocoupler IRED & Photo-Thyristor TLP548J OfficeMachine Household Use Equipment Solid State Relay Switching PowerSupply The TOSHIBA TLP548J consists of a photo-thyristor opticallycoupled to an infrared emitting diode in a six lead plastic DIPpackage. • Peak off-state voltage: 600 V (min) • Trigger LEDcurrent: 7 mA (max) • On-state current: 150 mA (max) • Isolationvoltage: 2500 Vrms (min) • UL-recognized: UL 1577, FileNo.E67349