View 2sa1837 datasheet:

DIP Type TransistorsTransistorsPNP Transistors2SA1837TO-220MF Units:mm Features High collector voltageVCEO=-230V (min) Complementary to 2SC4793 High transition frequency :fT=70MHz(Typ.) RoHS product Absolute Maximum Ratings Ta = 25Parameter Symbol Rating Unit Collector - Base Voltage VCBO -230 Collector - Emitter Voltage VCEO -230 V Emitter - Base Voltage VEBO -5 Collector Current - Continuous IC -1A Base Current IB -0.1Ta=25 2 Collector Power Dissipation PC WTc=25 20 Thermal Resistance Junction to Ambient RJA 62.5/W Thermal Resistance Junction Case RJC 6.25 Junction Temperature TJ 150 Storage Temperature range Tstg -55 to +150 Electrical Characteristics Ta = 25Parameter Symbol Test Conditions Min Typ Max Unit Collector- emitter breakdown voltage VCEO Ic= -10 mA IB=0 -230 V

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