TIP122 Transistor Pinout, Equivalent, Uses, Features

TIP122 Transistor is an NPN Darlington transistor. The Darlington transistor means there are two transistors in one pack joined to increase gain at output. TIP122 Darlington transistor has a lot of good features, like 5A collector current, maximum emitter-base voltage is 5V, maximum collector dissipation is 65 watt and so on. This transistor is manufactured to use as a switch and for amplification purposes. TIP122 Transistor Pinout configuration is given below.


Features of TIP122:

  • Type of Package: TO-220
  • Type of Transistor: NPN
  • Maximum Collector Current(IC): 5A
  • Max Collector & Emitter Voltage : 100V
  • Maximum Collector-Base Voltage : 100Vi
  • Emitter-Base Voltage Maximum is : 5V
  • Maximum Collector Dissipation : 65 Watt
  • Minimum and Maximum DC Current Gain: 1000
  • Maximum Storage and Operating temperature: -65 to +150 Centigrade

 Complement of TIP122 Transistor:

The Complement of TIP122 transistor is TIP127.

Equivalent of TIP122 Darlington Transistor:

The Alternate of TIP122 transistor are:TIP132, TIP102, NTE261, NTE263, 2N6045, 2N6045G, 2SD2495, BDT65B, 2N6532, BDT63B, BDW43, TIP142T.

How we Can Use it & How to Use:

This transistor you can use as a switch in electronic circuits to drive any load under 5A according to its features. This transistor can be used in many applications for power supply circuits, battery charger circuits, driving motors etc. It will also perform well as an amplifier and can be used as a different amplifier or in audio amplification steps. Furthermore, this transistor can also be used as an audio preamplifier and The emitter-base voltage of this transistor is 5V DC.  So this transistor can also be used at the output of a microcontroller and logic devices to control loads below 5A.

 Applications of TIP122 transistor:

  • Switching Loads Under 5A
  • Also used in Audio Amplifier Stages
  • Preamplifiers
  • Audio Amplifier circuits

Safe Long Run in a Circuit:

To get very good performance with this Darlington transistor we suggest to always stopping below its max ratings. It can not be work in circuits using more than100V. Do not put load over and always use a suitable base resistor to supply required current on its base. Use a suitable heatsink to save it from overheating and to store its temperature below -65 centigrade and more than +150 centigrade.