When no current is applied to the base terminal, then it will work in forward biased condition and it turns on. Since Bd140 is a PNP transistor so the majority of charge carriers are holes.

The collector and emitter are left closed when the base pin is held at the ground and are open when a signal is provided to the base pin. Pin Configuration/ Pin Diagram/ Pinout of Bd140 TransistorĪs mentioned Bd140 is a PNP transistor, so, in it the N-doped layer is embedded between two P-dopped layers. And the collector dissipation of this transistor is around 12.5 watt due to this it’s good for use in audio amplifier circuits. This Transistor has high collector-emitter and collector-base voltage of maximum of 80 volts, which makes it ideal to use in 80 volts DC or below 80 volts circuits. The collector current of this transistor is 1.5A, so it can handle current up to 1.5A, and it can be used to drive loads up to 1.5A. This transistor comes in the TO-126 package. The BD140 is a PNP type medium power bipolar junction transistor (BJT) that is mainly used in many electronics circuits for switching and amplification purpose. 2D-Model and Physical Dimensions (TO-225).Equivalent Transistors of BD140 Transistor:.

Specifications and Features of Bd139 Transistor:.

Pin Configuration/ Pin Diagram/ Pinout of Bd140 Transistor.

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