View bt152x datasheet:

Philips Semiconductors Product specification Thyristors BT152X series GENERAL DESCRIPTION QUICK REFERENCE DATA Glass passivated thyristors in a full SYMBOL PARAMETER MAX. MAX. MAX. UNIT pack, plastic envelope, intended for use in applications requiring high BT152X- 400R 600R 800R bidirectional blocking voltage VDRM, Repetitive peak off-state 450 650 800 V capability and high thermal cycling VRRM voltages performance. Typical applications IT(AV) Average on-state current 13 13 13 A include motor control, industrial and IT(RMS) RMS on-state current 20 20 20 A domestic lighting, heating and static ITSM Non-repetitive peak on-state 200 200 200 A switching. current PINNING - SOT186A PIN CONFIGURATION SYMBOL PIN DESCRIPTION case 1 cathode ak 2 anode 3 gate g 1 2 3 case isol