Darlington Pairs

What are Darlington Pairs?

Darlington pairs, also called Darlington transistors, are a package of two standard BJT transistors (bipolar junction transistor). One of the transistors is high-gain while the other is high current. 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 micro controller 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.

How do they work?

The emitter of one transistor is connected to the base of the other transistor which effectively creates one transistor.

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 board.

What applications do 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.

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 81 - 100 of 487 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. 122-0071
Mfr. Part No.MJ11016G
SGD8.15
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. 178-7525
Mfr. Part No.BSP52T1G
SGD0.179
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 124-5325
Mfr. Part No.MJH11022G
SGD4.48
Each (In a Tube of 30)
units
NPN 15 A 250 V 5 V TO-247 Through Hole 3 - Single 1 100 3.8 V 250 V 4 V
RS Stock No. 774-3246
Mfr. Part No.2N6052G
SGD10.68
Each
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. 163-0840
Mfr. Part No.2N6052G
SGD7.99
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. 686-8146
Mfr. Part No.MJD117T4
SGD0.849
Each (In a Pack of 20)
units
PNP 4 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 200 4 V 100 V 3 V
RS Stock No. 163-2498
Mfr. Part No.MJD31CT4G
SGD0.249
Each (On a Reel of 2500)
units
NPN - 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 10 - 100 V 1.2 V
RS Stock No. 166-1532
Mfr. Part No.BST52,115
BrandNexperia
SGD0.393
Each (On a Reel of 1000)
units
NPN 1 A 80 V 5 V UPAK Surface Mount 4 - Single 1 1000 1.9 V 90 V 1.3 V
RS Stock No. 168-6448
Mfr. Part No.ULN2004A
SGD0.654
Each (In a Tube of 25)
units
NPN 500 mA 50 V - PDIP Through Hole 16 - Common Emitter 7 1000 - - 1.6 V
RS Stock No. 808-0502
Mfr. Part No.TIP120TU
SGD1.255
Each (In a Pack of 25)
units
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 2 1000 - 60 V 4 V
RS Stock No. 752-8072
Mfr. Part No.BCV46E6327HTSA1
BrandInfineon
SGD0.101
Each (In a Pack of 50)
units
PNP 500 mA 60 V 10 V SOT-23 Surface Mount 3 - Single 1 2000 1.5 V 80 V 1 V
RS Stock No. 790-5397
Mfr. Part No.MJH11022G
SGD5.26
Each (In a Pack of 2)
units
NPN 15 A 250 V 5 V TO-247 Through Hole 3 - Single 1 100 3.8 V 250 V 4 V
RS Stock No. 144-9908
Mfr. Part No.ULN2002AN
SGD1.49
Each (In a Tube of 25)
units
NPN 500 mA 50 V - PDIP Through Hole 16 - Common Emitter 7 - - - 1.6 V
RS Stock No. 463-117
Mfr. Part No.BSP52T1G
SGD0.422
Each (In a Pack of 25)
units
NPN 1 A 80 V 5 V SOT-223 Surface Mount 3 + Tab - Single 1 1000 1.9 V 90 V 1.3 V
RS Stock No. 877-2946
Mfr. Part No.STP03D200
SGD9.21
Each (In a Pack of 5)
units
NPN 100 mA 1200 V 20 V TO-220 Through Hole 3 - Single 1 230 @ 20 mA @ 10 V 2 V 2000 V 2 V
RS Stock No. 688-9411
Mfr. Part No.NCV1413BDR2G
SGD0.752
Each (In a Pack of 5)
units
NPN 500 mA 50 V 5 V SOIC Surface Mount 16 - Common Emitter 7 1000 - - 1.6 V
RS Stock No. 145-2795
Mfr. Part No.MJD31CG
SGD0.422
Each (In a Tube of 75)
units
NPN - 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 10 - 100 V 1.2 V
RS Stock No. 463-000
Mfr. Part No.MJ11016G
SGD10.90
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. 168-6441
Mfr. Part No.MJD117T4
SGD0.342
Each (On a Reel of 2500)
units
PNP 4 A 100 V 5 V DPAK (TO-252) Surface Mount 3 - Single 1 200 4 V 100 V 3 V
RS Stock No. 168-6440
Mfr. Part No.ULQ2003D1013TR
SGD0.39
Each (On a Reel of 2500)
units
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 - - - 1.6 V
Related Products
Darlington transistor power drivers are high-voltage, high-current switch ...
Description:
Darlington transistor power drivers are high-voltage, high-current switch arrays containing multiple open-collector Darlington pairs and integral suppression diodes for inductive loads. The high current rating of each output is 500 mA or higher. The inputs are pinned opposite the outputs ...
This array of seven Darlington transistor circuits is ...
Description:
This array of seven Darlington transistor circuits is able to drive high output current (500 mA). Built in input resistor limits the base currentBuild in clamp diode at the output absorbs surge currentsInput and output pins layout is separated on ...
Bipolar Junction Transistors (BJT) broad range provides complete ...
Description:
Bipolar Junction Transistors (BJT) broad range provides complete solutions for various circuit application needs. Innovative packages are designed for minimal size, highest reliability and maximum thermal performance.
Darlington transistor power drivers are high-voltage, high-current switch ...
Description:
Darlington transistor power drivers are high-voltage, high-current switch arrays containing multiple open-collector Darlington pairs and integral suppression diodes for inductive loads. The high current rating of each output is 500 mA or higher. The inputs are pinned opposite the outputs ...