
Like every other transistor even BD139 has three terminals mentioned below Pin Configuration/ Pin Diagram/ Pinout of BD139 Transistor: Its saturation voltage is 0.5 V and collector terminals dissipation current is 12.5 W with high collector-emitter and collector-base voltage. This transistor has a gain value of ranges from 40 to 160 which determines the amplification capacity for the transistor.

it is in the plastic package of TO-126, TO-225 and SOT-32. BD139 is a BJT (Bipolar Junction Transistor) NPN Transistor, basically used in many electronic circuits as switches or amplifiers like in motors, relays, high power LEDs, etc.


Pin Configuration/ Pin Diagram/ Pinout of BD139 Transistor:.
