View s1234 datasheet:

Bulletin I0140J 01/01 S1234 PHASE CONTROL THYRISTORS Junction Size : Square 480 mils - IR480SG12H/ S1234 Wafer Size : 4" VRRM / VDRM Class : 600 to 1200 V Passivation Process : Glassivated MESA Reference IR Packaged Part : T90RIA Series Major Ratings and Characteristics Parameters Units Test Conditions VTM Typical On-state Voltage 1.2 V TJ = 25°C, IT = 25 A VRRM / VDRM Reverse Breakdown Voltage 600 to 1200 V TJ = 25°C, IRRM = 100 µA (1) IGT Required DC Gate Current to Trigger 10 to 110 mA TJ = 25° C, anode supply = 6 V, resistive load VGT Max. Required DC Gate Voltage to Trigger 1.9 V TJ = 25° C, anode supply = 6 V, resistive load IH Holding Current Range 10 to 200 mA Anode supply = 6 V, resistive load IL Maximum Latching Current 400 mA Anode supply = 6 V, resistive load (1