2sc4212.pdf datasheet:

Power Transistors2SC42122SC42122SC42122SC42122SC4212Silicon NPN triple diffusion planar typeUnit: mmFor color TV horizontal deflection driver8.0+0.50.13.20.2 3.160.1 Features High collector to emitter voltage VCEO TO-126B package which requires no insulation plate for installa-tion to the heat sink Absolute Maximum Ratings TC = 25CParameter Symbol Rating UnitCollector to base voltage VCBO 350 V0.750.10.50.10.50.1 1.760.1Collector to emitter voltage VCEO 300 V4.60.22.30.2Emitter to base voltage VEBO 7.5 V1 : Emitter2 : CollectorPeak collector current ICP 400 mA 1 2 33 : BaseCollector current IC 200 mATO-126B PackageCollector power dissipation PC 1.2 *1 W5 *2Junction temperature Tj 150 CStorage temperature Tstg -55 to +150 CNote) Without heat sink*1:*2: With a 100 100 2 m