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What is a Darlington Transistor?

A Darlington transistor, also known as a Darlington pair, consists of a pair of bipolar transistors that are connected in order to provide a very high-current gain from a low-base current. In a Darlington transistor, the input transistor’s emitter is wired to the output transistor’s base and their collectors are tied together. Therefore, the current that is amplified by the input transistor is amplified even further by the output transistor.

Types of Darlington Transistors

There are many different kinds of Darlington transistors. At Future Electronics we stock many of the most common types categorized by Polarity, Power Dissipation, Collector Current @ 100C, Maximum CE Voltage, Packaging Type and Minimum DC Current Gain. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common values for Maximum CE Voltage are 30 V, 60 V, 80 V and 100 V. We also carry Darlington transistors with Maximum CE Voltage as high as 450 V. Power Dissipation can be between 200 mW and 250 W, with 2 W being the most common value.

Darlington Transistors from Future Electronics

Future Electronics has a full Darlington transistor selection from several manufacturers when looking for an mpsw45a Darlington transistor, Darlington transistor switch, Darlington transistor amplifier, tip120 Darlington transistor, or Darlington transistors of several types for your Darlington transistor circuits. Simply choose from the Darlington transistor technical attributes below and your search results will quickly be narrowed in order to match your specific Darlington transistor application needs.

If you have a preferred brand, we deal with several manufacturers such as Diodes Inc., Fairchild, ON Semiconductor and STMicroelectronics, among other manufacturers. You can easily refine your Darlington transistor product search results by clicking your preferred Darlington transistor brand below from our list of manufacturers.

Applications for Darlington Transistors:

Darlington transistors are used in applications where a high gain is needed at a low frequency. Photodarlingtons are used in light-sensitive circuits. Some applications include:

  • Power regulators
  • Audio amplifier output stages
  • Display drivers
  • Motor controllers
  • Touch and light sensors
  • Solenoid control

Choosing the Right Darlington Transistor:

When you are looking for the right Darlington transistors, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Maximum CE Voltage (-100 V, 30 V, 60 V, 80 V, 100 V,…), Polarity (NPN, NPN/PNP, PNP) and Power Dissipation (from 200 mW to 250 W) to name a few. You will be able to find the right Darlington transistor switch, mpsw45a Darlington transistor, tip120 Darlington transistor, Darlington transistor amplifier, or Darlington transistors of several types for your Darlington transistor circuit.

Darlington Transistors in Production Ready Packaging or R&D Quantities

If the quantity of Darlington transistors that you require is less than a full reel, we offer customers many of our Darlington transistor products in tube or tray quantities that will help you avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch and find out more on how you can avoid possible shortages.



Bipolar Transistors By Manufacturer Name:

Bipolar Transistors by Primary Attributes:

By Collector Current @ 100C




By DC Current Gain-Min






Featured Bipolar Transistor Products


Manufacturer Part Number Description
Diodes Inc.FMMT634TAFMMT634 Series 100 V 900 mA NPN Silicon Power Darlington Transistor - SOT-23-3
Diodes Inc.MMBT6427-7-FMMBT6427 Series 40 V 500 mA NPN Surface Mount Darlington Transistor - SOT-23-3
Diodes Inc.MMBTA14-7-FMMBTA14 Series NPN 30 V 300 mW Darlington Transistor Surface Mount - SOT-23-3
Diodes Inc.FZT605TAFZT605 Series 120 V 1.5 A NPN Silicon Planar Medium Power Darlington Transistor
FairchildBCV27NPN 350 mW 30 V 1.2 A Surface Mount Darlington Transistor - SOT-23-3
FairchildPZTA14PZTA14 Series 30 V CE Breakdown 1.2 A NPN Darlington Transistor - SOT-223
FairchildMMBT6427MMBT6427 Series 40 V CE Breakdown 1.2 A NPN Darlington Transistor - SOT-23
FairchildTIP107TUTIP Series PNP 2 W -100 V -8 A Epitaxial Darlington Transistor - TO-220-3
FairchildMMBTA14MMBTA14 Series 30 V CE Breakdown 1.2 A NPN Darlington Transistor - SOT-23
ON SemiconductorMMBTA13LT1GMMBT Series 30 V 300 mA NPN Silicon Darlington Amplifier Transistor - SOT-23
ON SemiconductorMMBTA14LT1GMMBT Series 30 V 300 mA NPN Silicon Darlington Amplifier Transistor - SOT-23
ON SemiconductorMJD112T4GMJD Series 100 V 2 A NPN Complementary Darlington Power Transistor - TO-252
ON SemiconductorMPSA13GMPSA Series 30 V 500 mA NPN Silicon Darlington Transistor - TO-92
ON SemiconductorMPSA13RLRPGMPSA13 Series 30 V 500 mA NPN Silicon Darlington Transistor - TO-92
ON SemiconductorMPSA27GMPSA Series 60 V 500 mA NPN Silicon Darlington Transistor - TO-92
ON Semiconductor2N6045G2N Series 100 V 8 A NPN Medium-Power Complementary Silicon Transistor - TO-220AB
ON SemiconductorMMBT6427LT1GMMBT Series 40 V 500 mA NPN Silicon Darlington Transistor - SOT-23
ON SemiconductorTIP120GTIP Series 60 V 5 A NPN Medium Power Complementary Silicon Transistor - TO-220AB
ON SemiconductorBC517GBC Series 30 V 1 A NPN Silicon Darlington Transistor - TO-92
ON SemiconductorMJD117T4GMJD Series 100 V 2 A PNP Complementary Darlington Power Transistor - TO-252
STMicroelectronicsTIP122TIP122 Series NPN 100 V 5 A Complementary Power Darlington Transistor TO-220-3
STMicroelectronicsMJD122T4MJD122 Series NPN 100 V 8 A Complementary Power Darlington Transistor - TO-252-3
STMicroelectronicsTIP127TIP127 Series PNP 100 V 5 A Complementary Power Darlington Transistor - TO-220-3
STMicroelectronicsTIP107TIP107 Series PNP 100 V 8 A Complementary Power Darlington Transistor - TO-220-3
STMicroelectronicsTIP112TIP112 Series NPN 100 V 2 A Complementary Power Darlington Transistor - TO-220-3

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