TIP122 Bipolar Transistor

Characteristics of TIP122 Transistor

  • Type: NPN
  • Collector-Emitter Voltage, max: 100 V
  • Collector-Base Voltage, max: 100 V
  • Emitter-Base Voltage, max: 5 V
  • Collector Current − Continuous, max: 5 A
  • Collector Dissipation: 65 W
  • DC Current Gain (hfe): 1000
  • Operating and Storage Junction Temperature Range: -65 to +150 °C
  • Package: TO-220

Pinout of TIP122

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

Equivalent circuit

TIP122 equivalent circuit

Complementary PNP transistor

The complementary PNP transistor to the TIP122 is the TIP127.

Replacement and Equivalent for TIP122 transistor

You can replace the TIP122 with the 2N6045, 2N6045G, 2N6532, 2SD1195, 2SD1196, 2SD1415, 2SD1415A, 2SD1829, 2SD1830, 2SD1892, 2SD1892-P, 2SD1892-Q, 2SD2495, 2SD2495-O, 2SD2495-P, 2SD2495-Y, 2SD560, 2SD560-KB, 2SD560-LB, 2SD560-MB, 2SD633, BDT63B, BDT63C, BDT65B, BDT65C, BDW42, BDW42G, BDW43, KSB601, KSB601-O, KSB601-R, KSB601-Y, KSD560, KSD560-O, KSD560-R, KSD560-Y, MJF122, MJF122G, MJF6388, MJF6388G, TIP102, TIP102G, TIP122G, TIP132, TIP132G, TIP142T or TTD1415B.

Lead-free Version

The TIP122G transistor is the lead-free version of the TIP122.
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