TIP120 Transistor: Pinout, Equivalent, & Features


The TIP120 Transistor, is a Darlington pair transistor & this transistor must have in your computer lab. This transistor has some of  good features which are 5A load pick up, collector & emitter voltage of 60V and emitter-base voltage of 5V. Maximum collector dissipation of 65 Watt and the max current gain of 1000 which makes this transistor ideal to use in different variety of switching and amplification purposes in the electronic circuits. Pin configuration of TIP120 Transistor.


Features of TIP120 Transistor:

  • Type of Package: TO-220
  • Type of Transistor: NPN
  • Maximum Collector Current(IC): 5A
  • Max Collector & Emitter Voltage (VCE): 60V
  • Max Collector to Base Voltage (VCB): 60V
  • Maximum Emitter to Base Voltage (VEB O): 5V
  • Max Collector Dissipation (PC): 65 Watt
  • Minimum and Maximum DC Current Gain (hFE): 1000
  • Maxi Storage and Operating temperature: -65 to +150 Centigrade

Complement of NPN transistor:

The Complement of TIP120 is TIP125

Equivalent of NPN transistor

The Alternate of Tip120 transistor are:2N6388, 2N6530, 2N6532, 2SD1191, 2N6044, BDW43, TIP142T, MJF122, MJF6388, 2N6045, 2N6045G, 2SD1026, 2N6043, TIP120, 2SD633, 2SD634, TIP101, TIP131, BDT63B,

How We Can Use it & How to Use:

TIP120 Transistor can be used in variety of switching and amplification related applications. When using as a switch it requires only 120mA to its base to become completely saturated and drive load of 5A. With 5A of current one can drive verity of components as a high power LED bulbs, LEDs, high power relays, LEDs strips and other switches, devise and full part of a circuit or a fully separate device. When we work as amplifier amplify a very small quantity of audio to drive a high power speaker directly with on other extra circuits required. It can also be used in a preamplifier and amplifier stages. Its emitter_to_base voltage cost also makes it ideal to use with microcontroller and other devices to drive loads below 5A.

 Applications of TIP 120 Darlington Transistor

  • It is used in Microcontrollers
  • Audio Preamplifiers and Its Stages
  • Switching or Driving Loads under 5A
  • Audio Power Amplifier appliances
  • Audio Amplifier Stages circuits

Where we to Safely Long Run in a Circuit

To get long term performance with this transistor it is recommended to not operate load of more than 60V and 5A.

To safely run TIP120 transistor in your applications and to get long term performance with this transistor it is recommended to not operate load of more than 60V and 5A. Must be Checked pin configurations before keeping in the circuit and always use a suitable heatsink with the transistor, always use a suitable base resistor with the transistor and do not store in the temperature below -65 centigrade and above +150 centigrade.