This is one of the transistor types.
Part Number : B649A, B649, 2SB649A, 2SB649A
Function : Silicon PNP Epitaxial Transistor
Package : TO-126 MOD Type
Manufactures : Hitachi
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Application
1. Low frequency power amplifier complementary pair with 2SD669/A
Absolute Maximum Ratings (Ta = 25°C)
1. Collector to base voltage : VCBO = –180 V
2. Collector to emitter voltage : VCEO = –160 V
3. Emitter to base voltage : VEBO : –5 V
4. Collector current : IC = –1.5 A
5. Collector peak current : IC(peak) = –3 A
6. Collector power dissipation : PC = 1W
Pinout
