2SC3991-L Bipolar Transistor

Characteristics of 2SC3991-L Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 500 V
  • Collector-Base Voltage, max: 800 V
  • Emitter-Base Voltage, max: 7 V
  • Collector Current − Continuous, max: 50 A
  • Collector Dissipation: 300 W
  • DC Current Gain (hfe): 15 to 30
  • Transition Frequency, min: 18 MHz
  • Operating and Storage Junction Temperature Range: -55 to +150 °C
  • Package: TO-3P

Pinout of 2SC3991-L

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

Classification of hFE

The 2SC3991-L transistor can have a current gain of 15 to 30. The gain of the 2SC3991 will be in the range from 15 to 50, for the 2SC3991-M it will be in the range from 20 to 40, for the 2SC3991-N it will be in the range from 30 to 50.

Marking

Sometimes the "2S" prefix is not marked on the package - the 2SC3991-L might only be marked "C3991-L".
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