2n3773.pdf datasheet:

Continental Device India LimitedAn ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company2N3773NPN SILICON PLANAR POWER TRANSISTORTO-3Metal Can PackageComplementary 2N6609General Purpose Amplifier specially suited for Power Conditioning ApplicationsABSOLUTE MAXIMUM RATINGS DESCRIPTION SYMBOL UNITSVALUECollector Base Voltage VCBO 160 VCollector Emitter Voltage VCEO V140Collector Emitter Voltage VCEX V160Emitter Base Voltage VEBO 7 VCollector Current Continuous IC 16 APeak (1) 30 ABase Current Continuous IB 4 APeak (1) 15 APower Dissipation @ Tc=25C PD 150 WDerate Above 25C 0.855 W/COperating and Storage Junction Tj, Tstg - 65 to +200 CTemperature RangeTHERMAL RESISTANCERth(j-c)Junction to Case 1.17 C/W(1) Pulse Test: Pulse Width =5ms, Duty Cycle