BD138 PNP Power Transistor – Datasheet

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The BD138 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.

BD138 Pinout

BD138 Pin Configuration

Pin NoPin Name
1Emitter
2Collector
3Base

BD138 Key Features

  • High current (max. 1.5 A)
  • Low voltage (max. 80 V)
  • Type Designator: BD138
  • Material of Transistor: Si
  • Polarity: PNP
  • Maximum Emitter-Base Voltage |Veb|: 5 V
  • Package: TO126

BD138 Specification

Ic (mA)Pd (mW)Vce (max)Vcb hfe@Ic
1.51.25606063-160150

BD138 Equivalent/Alternate:

  • BD115, BD130, BD131, BD132, BD135, BD137

Application

  • High-fidelity amplifiers
  • Television circuits

You can download this datasheet for BD138 PNP Power Transistor from the link given below: