BD140
SKU: R3-F-4-6
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Description:
The BD140 is a PNP power transistor designed for medium-power amplification and switching applications. It is commonly used in audio amplifiers, driver stages, and power control circuits. With higher current handling than small-signal transistors like BC547, it is suitable for driving loads such as motors, relays, and speakers.

Specifications:

  • Type: PNP BJT Transistor
  • Collector-Emitter Voltage (Vce): -80V
  • Collector-Base Voltage (Vcb): -80V
  • Emitter-Base Voltage (Veb): -5V
  • Continuous Collector Current (Ic): up to -1.5A
  • Power Dissipation: ~12.5W
  • Current Gain (hFE): 40 – 250
  • Transition Frequency: ~190 MHz
  • Package: TO-126

Features:

  • Medium power transistor for higher current loads
  • Good current gain for amplification
  • Suitable for driver stages in amplifier circuits
  • Compact TO-126 package with heat dissipation capability
  • Reliable and widely used in analog circuits

Applications:

  • Audio amplifier driver stages
  • Complementary pair with BD139 (NPN)
  • Relay and motor drivers
  • Power switching circuits
  • Voltage regulation circuits

Pin Configuration (Front side facing you):

  • Emitter (E)
  • Collector (C)
  • Base (B)

Important Note:

  • PNP transistor (current flows from emitter to collector)
  • Often used with BD139 for push-pull amplifier designs
  • Requires proper biasing for safe operation

Package Includes:

  • 1 × BD140 Transistor

Disclaimer:
No warranty. No guarantee. No return. No replacement.

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