DELIVERY CHARGES TCS Advance =275Rs/kg 1 to 3 Working Days, Cash On Delivery TCS 350RS/kg 1 to 7 Working Days

TIP127 PNP Medium-Power Complementary Silicon Transistors

In stock
Add to wish list

The TIP127 is a PNP type Darlington pair transistor. It is manufactured for universal drive amplifications and less velocity swapping submissions. It is existing in TO-220 kind of cascading. Its corresponding NPN transistor is the TIP122.

This is a common transistor it used in varied engineering schemes. It formed for least time taking swap proposals. In today’s post, we will have a look at its protection, wreck, difference, entitlements, etc. I will also share some links where I have connected it with other microcontrollers. You can also get more material about it in comments, I will guide you more about it. So, let’s get started with a basic Introduction to TIP127.

Introduction to TIP127

  • The TIP127 is a PNP type Darlington pair transistor. It is manufactured for universal drive amplifications and less velocity swapping submissions.
  • It works similar to standard PNP transistor, then as it consists of a Darlington pair it takes collector current of around five amperes and a gain of near 1000.

  • It has ability to endure around 100 volts at its collector Emitter terminals henceforth it used to run high current consuming loads.
  • It has two limits on the power management aptitude of a transistor first one is normal intersection temperature and second one failure.
  • If you are noticing for a PNP transistor for your amplifier electric circuit then TIP127 could be your brilliant choice or to alteration stylish current loads larger than 2A.introduction to tip127, tip127 working, tip127 features, tip127 applications, tip127

Pinout of TIP127

  • These are the main pinout of  TIP127.
    Pin# Type  Parameters
    Pin#1 Emitter Current creates out by the emitter, it is characteristically linked to ground.
    Pin#2 Base It accomplishes the biasing of the transistor and works to turn ON or OFF the transistor.
    Pin#3 Collector Current movements in over collector, classically linked to load

    Let’s see a diagram of the pinout.

Features of TIP127

  • These are some important of TIP127. It is a PNP transistor.
    • The voltage at (C-E) terminals is a minus hundred (-100) volts.
    • The voltage it uses at (C-E) is minus (100) volts.
    • The voltage at emitter and base is minus five (-5) volts Emitter-Base Voltage:
    •  It uses current at collector is minus five (-5) amperes.
    • The power dissipation at the collector terminal is sixty-five (65) watts.
    • Its is Gain thousand (1000).
    •  Its Working and Storing Intersection Temperature Range is from minus sixty-five to plus one fifty Celsius(-65 to +150 °C).
    • It offered in TO-220 casing.

Ratings of TIP127

Symbols Ratings  Parameters

-60 Volts

These are the voltage across the collector and base.
VCEO -60 Volts  These are the voltage around the collector and emitter.
VEBO -5 Volts These are the voltage around emitter and base.
IC -5 amper It is the current at collector which is dc.
ICP -8 Amper  It is the pulse of collector current.

-120 milliampere

It is the current at the base.


Pc 65 Watts It is the power dissipation at  Collector (TC=25°C).

150 C

 It is the Junction Temperature.

Electrical Characteristic of TIP127

Symbols Ratings  Parameters

-60 Volts

It is the Collector and Emitter Supporting Voltage
ICEO -2 milliampere  It is the Collector Cut off Current.
VCBO -1 milliampere It is the value of Collector Cut off Current.
IEBO -2 milliampere It is the value of Emitter Cut off Current.
hFE 1000 It is the value of  Current Gain.

-2 volts

These are the Collector and Emitter Saturation Voltage.


VBE -2.5 volts It is the value of  Base and Emitter On Voltage

300 pF

This is the output capacitance.


Applications of TIP127

These are some important applications of TIP127 which are described below with detail description.

  • It is used to run higher current devices such as loads which work on up to the five amperes.
  • It works as the switch which consumes intermediate power during its working.
  • It used in such circuits where higher amplification is required.
  • It also used to in motors circuits to control their speeds.
  • It also used in Inverter circuits and other rectifier circuits.

So, friends, I tried a lot to share my best knowledge about TIP127, if you have any question about it please ask in comments. I will resolve your problems in a comprehensive way. Thanks for reading. Take care until the next tutorial.


No posts found

Write a review