BD139 NPN 80V 1.5A BIPOLAR TRANSISTOR TO-126

The BD139 is a fundamental component within the realm of electronics, categorized as a bipolar junction transistor (BJT). It is specifically designed with an NPN bipolar structure, signifying the presence of three layers (doped regions) with alternating P-type and N-type semiconductors. This configuration enables the BD139 to function as a current amplifier, making it a mainstay in various electronic applications.

Key Features of BD139 NPN 80V 1.5A Bipolar Transistor:

• • High voltage capacity of up to 80V.
  • Capable of handling a continuous collector current of 1.5A.
  • Fast switching times and high current gain.
  • Robust construction with thermal stability.
  • Versatile usage in amplifiers and switching applications.

Technical Specifications of BD139 NPN 80V 1.5A Bipolar Transistor:

• • Collector-Emitter Voltage (Vceo): 80V
  • Collector-Base Voltage (Vcbo): 80V
  • Emitter-Base Voltage (Vebo): 5V
  • Collector Current (Ic): 1.5A
  • Power Dissipation (Ptot): 12.5W
  • DC Current Gain (hFE): 40 to 160
  • Operating Junction Temperature (Tj): -55°C to 150°C

Mechanical Specifications of BD139 NPN 80V 1.5A Bipolar Transistor:

• • Package Type: TO-126
  • Dimensions: Standard TO-126 package dimensions
  • Weight: Approximately 1.5 grams

Schematic Symbol, Connection, Wiring, and Pinout of the BD139 NPN 80V 1.5A Bipolar Transistor:

• • Base (B): Controls the collector current.
  • Collector (C): Output current pin.
  • Emitter (E): Input current pin.

Applications of the BD139 NPN 80V 1.5A Bipolar Transistor:

• • Audio amplifiers: Amplifying low-level audio signals.
  • Power switching: Controlling moderate-power loads like LEDs or small motors.
  • Interface circuits: Providing a buffer stage between low-power control signals and higher-power circuits.
  • Driver circuits: Driving other electronic components such as relays or optocouplers.

Equivalent of BD139 NPN 80V 1.5A Bipolar Transistor:

• • BD135
  • BD137
  • 2N3055 (for higher power applications)
  • TIP31A (with similar characteristics)
  • BC337
  • BC108 (for lower current applications)
  • TIP31 (for higher current applications)

Package Includes:

• • 1 x BD139 NPN 80V 1.5A Bipolar Transistor Kit