BD140 PNP Transistor 80V/1.5A



The BD140 is silicon epitaxial planar PNP transistors in Jedec SOT-32 plastic package, designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits.

Power Transistor?

Transistors are three-terminal semiconductor electronic devices that can be used as switches or amplifiers.
They can be of NPN or PNP polarity, and many different types are available with different power and switching speed ratings. If a transistor designed to these concepts can handle more than 1 A of collector current, it is generally considered to be a power transistor. Such transistors must have low output resistance to deliver large load currents, and good junction insulation to resist high voltages. They must also dissipate heat very quickly to avoid overheating.

BD140 Pin Configuration

Pin No Pin Name
1 Emitter
2 Collector
3 Base

BD140 Key Features

  • DC Current Gain — hFE = 40 (Min) @ IC = 0.15
  • Products are pre-selected in DC current gain
  • High current (max. 1.5 A)
  • Low voltage (max. 80 V)
  • Type Designator: BD140
  • Material of Transistor: Si
  • Polarity: PNP

BD140 Specification

Ic (mA) Pd (mW) Vce (max) Vcb hfe @Ic FT
1.5 1.25 80 100 63-160 150 50

BD140 Equivalent/Alternate:

  • BD115, BD130, BD131, BD132, BD135, BD139


  • General Purpose
  • Driver Stages
  • Hi-Fi Amplifiers
  • Television Circuits

You can download this datasheet for BD140 PNP Power Transistor from the link given below:


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