2SD1894 Bipolar Transistor

Characteristics of 2SD1894 Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 140 V
  • Collector-Base Voltage, max: 160 V
  • Emitter-Base Voltage, max: 5 V
  • Collector Current − Continuous, max: 7 A
  • Collector Dissipation: 70 W
  • DC Current Gain (hfe): 5000 to 30000
  • Transition Frequency, min: 20 MHz
  • Operating and Storage Junction Temperature Range: -55 to +150 °C
  • Package: TO-3PF

Pinout of 2SD1894

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

Classification of hFE

The 2SD1894 transistor can have a current gain of 5000 to 30000. The gain of the 2SD1894-P will be in the range from 5000 to 15000, for the 2SD1894-Q it will be in the range from 8000 to 30000.


Sometimes the "2S" prefix is not marked on the package - the 2SD1894 might only be marked "D1894".

Complementary PNP transistor

The complementary PNP transistor to the 2SD1894 is the 2SB1254.

Replacement and Equivalent for 2SD1894 transistor

You can replace the 2SD1894 with the 2SD1895.
If you find an error please send an email to mail@el-component.com