Darlington Pairs

Darlington pairs, also known as Darlington Transistors are discrete semiconductor devices consisting of a package of two standard BJT transistors (bipolar junction transistor). One of the transistors is high-gain while the other is high current. RS Components offer a wide range of high-quality Darlington Transistors from leading brands including ON Semiconductor, STMicroelectronics, Texas Instruments and Nexperia.

How do they work?

The emitter of one transistor is connected to the base of the other transistor which effectively creates one transistor. They are used to amplify weak signals from one circuit to another circuit or microprocessor. This means that the tiny current from a sensor or microcontroller I/O pin can be amplified to drive a large load. Darlington pairs can also be operated as an ON/OFF switch. Darlington pairs work together as a single transistor but feature a much higher current gain. They also offer high input impedance in comparison to single transistors.

Why should you use a Darlington pair?

Darlington pairs provide a very high current gain. Working as two transistors within one package, Darlington pairs have a very compact footprint which takes up minimal space on a (PCB) printed circuit board.

What applications would you use them in?

With high current gain, Darlington transistors are well suited to power applications such as driving motors and relays. Darlington pairs are ideal for application in display drivers, audio outputs, power regulators, light sensors, touch sensors and power supply outputs. It is not recommended to use them in applications that require high frequency as it is not possible to shut the base current off immediately.

What are the different types?

  • Darlington pairs can consist of either NPN (negative-positive-negative) transistors, PNP (positive-negative-positive) transistors or both.
  • Darlington pairs are typically supplied in one of two ways. You can purchase them as an array (called a Darlington array) within a single integrated circuit (IC) package, or as a simple single discrete component.

Standard package type examples include SOT-23, SOIC, TO-220 and TO-252 (DPAK)


...
Read more Read less

Filters

Viewing 1 - 20 of 185 products
Results per page
Description Price Transistor Type Maximum Continuous Collector Current Maximum Collector Emitter Voltage Maximum Emitter Base Voltage Package Type Mounting Type Pin Count Configuration Transistor Configuration Number of Elements per Chip Minimum DC Current Gain Maximum Base Emitter Saturation Voltage Maximum Collector Base Voltage Maximum Collector Emitter Saturation Voltage
RS Stock No. 122-0139
Mfr. Part No.MJ11033G
MYR61.119
Each (In a Tray of 100)
units
PNP 50 A 120 V 5 V TO-204 Through Hole 2 - Single 1 400 4.5 V 120 V 3.5 V
RS Stock No. 774-3202
Mfr. Part No.MJ11033G
MYR80.28
Each
units
PNP 50 A 120 V 5 V TO-204 Through Hole 2 - Single 1 400 4.5 V 120 V 3.5 V
RS Stock No. 145-3154
Mfr. Part No.2N6667G
MYR3.486
Each (In a Tube of 50)
units
PNP 10 A 60 V 5 V TO-220AB Through Hole 3 - Single 1 1000 4.5 V dc 60 V dc 3 V dc
RS Stock No. 800-9213
Mfr. Part No.2N6667G
MYR3.07
Each (In a Pack of 10)
units
PNP 10 A 60 V 5 V TO-220AB Through Hole 3 - Single 1 1000 4.5 V dc 60 V dc 3 V dc
RS Stock No. 122-0071
Mfr. Part No.MJ11016G
MYR27.237
Each (In a Tray of 100)
units
NPN 30 A 120 V 5 V TO-204 Through Hole 3 - Single 1 200 5 V 120 V 4 V
RS Stock No. 163-1230
Mfr. Part No.TIP122G
MYR2.739
Each (In a Tube of 50)
units
NPN 8 A 100 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 100 V 4 V
RS Stock No. 100-7565
Mfr. Part No.MJ11016G
MYR22.679
Each (In a Tray of 100)
units
NPN 30 A 120 V 5 V TO-204 Through Hole 3 - Single 1 200 5 V 120 V 4 V
RS Stock No. 463-000
Mfr. Part No.MJ11016G
MYR38.135
Each (In a Pack of 2)
units
NPN 30 A 120 V 5 V TO-204 Through Hole 3 - Single 1 200 5 V 120 V 4 V
RS Stock No. 145-5290
Mfr. Part No.MJ11021G
MYR24.727
Each (In a Tray of 100)
units
PNP -30 A 250 V -50 V TO-204 Through Hole 2 - Single 2 100 -3.8 V -250 V -3.4 V
RS Stock No. 862-4963
Mfr. Part No.MJ11021G
MYR30.83
Each (In a Pack of 2)
units
PNP -30 A 250 V -50 V TO-204 Through Hole 2 - Single 2 100 -3.8 V -250 V -3.4 V
RS Stock No. 463-189
Mfr. Part No.MJD122T4G
MYR2.304
Each (In a Pack of 20)
units
NPN 8 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 100 4.5 V 100 V 4 V
RS Stock No. 103-5056
Mfr. Part No.MJD122G
MYR2.191
Each (In a Tube of 75)
units
NPN 8 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 100 4.5 V 100 V 4 V
RS Stock No. 774-3653
Mfr. Part No.TIP120G
MYR2.825
Each (In a Pack of 10)
units
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 60 V 4 V
RS Stock No. 163-0840
Mfr. Part No.2N6052G
MYR22.14
Each (In a Tray of 100)
units
PNP 12 A 100 V 5 V TO-204 Through Hole 2 - Single 1 100 4 V 100 V 3 V
RS Stock No. 688-1509
Mfr. Part No.MJD122G
MYR2.825
Each (In a Pack of 2)
units
NPN 8 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 100 4.5 V 100 V 4 V
RS Stock No. 671-1125
Mfr. Part No.BCV27
MYR0.83
Each (In a Pack of 25)
units
NPN 1.2 A 30 V 10 V SOT-23 Surface Mount 3 - Single 1 4000 1.5 V 40 V 1 V
RS Stock No. 100-7578
Mfr. Part No.MJD122T4G
MYR1.117
Each (On a Reel of 2500)
units
NPN 8 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 100 4.5 V 100 V 4 V
RS Stock No. 544-9905
Mfr. Part No.BDX33CG
MYR3.763
Each (In a Tube of 50)
units
NPN 10 A 100 V 5 V TO-220AB Through Hole 3 - Single 1 750 - 100 V 2.5 V
RS Stock No. 122-0090
Mfr. Part No.TIP107G
MYR3.924
Each (In a Tube of 50)
units
PNP 8 A 100 V 5 V TO-220AB Through Hole 3 - Single 1 200 - 100 V 2.5 V
RS Stock No. 103-5146
Mfr. Part No.TIP120G
MYR2.897
Each (In a Tube of 50)
units
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 60 V 4 V