2SC3439 Bipolar Transistor

Characteristics of 2SC3439 Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 25 V
  • Collector-Base Voltage, max: 30 V
  • Emitter-Base Voltage, max: 6 V
  • Collector Current − Continuous, max: 1.5 A
  • Collector Dissipation: 0.5 W
  • DC Current Gain (hfe): 400 to 1800
  • Transition Frequency, min: 130 MHz
  • Operating and Storage Junction Temperature Range: -55 to +150 °C
  • Package: SOT-89

Pinout of 2SC3439

Here is an image showing the pin diagram of this transistor.

Classification of hFE

The 2SC3439 transistor can have a current gain of 400 to 1800. The gain of the 2SC3439-G will be in the range from 400 to 800, for the 2SC3439-H it will be in the range from 600 to 1200, for the 2SC3439-J it will be in the range from 900 to 1800.


Sometimes the "2S" prefix is not marked on the package - the 2SC3439 might only be marked "C3439".

Complementary PNP transistor

The complementary PNP transistor to the 2SC3439 is the 2SA1369.

Replacement and Equivalent for 2SC3439 transistor

You can replace the 2SC3439 with the 2STF1340 or 2STF1550.
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