View 2sb1189 1238 datasheet:

2SB1189 / 2SB1238 Transistors Medium power transistor (-80V, -0.7A) 2SB1189 / 2SB1238 External dimensions (Units : mm) Features 1) High breakdown voltage, BVCEO=-80V, and 2SB1189 4.0 high current, IC=-0.7A. 1.0 2.5 0.5 2) Complements the 2SD1767 / 2SD1859. (1) (2) (3) Absolute maximum ratings (Ta=25°C) Parameter Symbol Limits Unit Collector-base voltage VCBO -80 V Collector-emitter voltage VCEO -80 V Emitter-base voltage VEBO -5 V Collector current IC -0.7 A ROHM : MPT3 (1) Base 0.5 (2) Collector EIAJ : SC-62 2SB1189 Collector power PC 2 W ?1 (3) Emitter dissipation 2SB1238 1 ?2 Junction temperature Tj 150 °C Storage temperature Tstg -55~+150 °C 2SB1238 ?1 When mounted on a 40?40?0.7 mm ceramic board. 2.5 ?2 Printed circuit board 1.7 mm thick, collecto