KD503 Bipolar Transistor

Characteristics of KD503 Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 80 V
  • Collector-Base Voltage, max: 80 V
  • Emitter-Base Voltage, max: 5 V
  • Collector Current − Continuous, max: 20 A
  • Collector Dissipation: 150 W
  • DC Current Gain (hfe): 15
  • Transition Frequency, min: 2 MHz
  • Operating and Storage Junction Temperature Range: -50 to +155 °C
  • Package: TO-3

Pinout of KD503

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

Replacement and Equivalent for KD503 transistor

You can replace the KD503 with the 2N5038, 2N5038G, 2N5039, 2N5303, 2N5671, 2N5672, 2N5686, 2N5686G, 2N5886, 2N5886G, 2N6283, 2N6283G, 2N6284, 2N6284G, 2N6338, 2N6338G, 2N6339, 2N6339G, 2N6340, 2N6340G, 2N6341, 2N6341G, 2SC2433, 2SD797, BDX69A, BDX69B, BDX69C, MJ11014, MJ11014G, MJ11016, MJ11016G, MJ11030, MJ11030G, MJ11032, MJ11032G, MJ14002, MJ14002G, MJ15003, MJ15003G, MJ802, MJ802G or NTE181.
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