2sc1827.pdf datasheet:

JMnic Product Specification Silicon NPN Power Transistors 2SC1827 DESCRIPTION With TO-220 package Complement to type 2SA769 Collector current :IC=4A Collector dissipation :PC=30W@TC=25 APPLICATIONS For use in low frequency power amplifier applications PINNING PIN DESCRIPTION1 Base Collector;connected to 2 mounting base Fig.1 simplified outline (TO-220) and symbol3 EmitterAbsolute maximum ratings (Ta=25) SYMBOL PARAMETER CONDITIONS VALUE UNITVCBO Collector-base voltage Open emitter 80 V VCEO Collector-emitter voltage Open base 80 V VEBO Emitter-base voltage Open collector 5 V IC Collector current (DC) 4 A PC Collector power dissipation TC=25 30 WTj Junction temperature 150 Tstg Storage temperature -55~150 JMnic Product Specification Silicon NPN Power Transistors 2SC1827 CHARACTERISTICS Tj=25 u