Transistor bd139 pinout equivalent features npn specifications technical Bd681 npn power transistor Bd139 transistor
0v to 12v adjustable regulated power supply using bd139 transistor
Bd139 transistor 0v regulated
0v to 12v adjustable regulated power supply using bd139 transistor
Bd139 bd137 bd140 pinout transistor datasheet npn pnp circuits emitter collector .
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