Discrete Semiconductors
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)
-
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND120,283.68Pack (1 Pack of 2) -
Vishay VS-30TPS12-M3, Thyristor 1200V, 20A 45mA
VND120,475.52 -
Texas Instruments LM334Z/NOPB Constant Current Diode, 10mA, 3-Pin TO-92
VND122,202.08Pack (1 Pack of 5) -
onsemi FGH40N60SMD IGBT, 80 A 600 V, 3-Pin TO-247, Through Hole
VND124,312.32 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 800V
VND125,847.04Pack (1 Pack of 2) -
Vishay Switching Diode, 300mA 100V, 2-Pin Quadro Melf LS4148-GS08
VND131,602.24Pack (1 Pack of 50) -
STMicroelectronics ULN2065B Quad NPN Darlington Transistor, 1.75 A 80 V, 16-Pin PDIP
VND135,822.72 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND136,781.92Pack (1 Pack of 10) -
onsemi TIP120G NPN Darlington Transistor, 8 A 60 V HFE:1000, 3-Pin TO-220
VND140,810.56Pack (1 Pack of 10) -
onsemi Switching Diode, 300mA 75V, 2-Pin SOD-323 1N4148WS
VND141,769.76Pack (1 Pack of 100) -
STMicroelectronics TIP102 NPN Darlington Transistor, 8 A 100 V HFE:200, 3-Pin TO-220
VND141,961.60Tube (1 Tube of 5) -
WeEn Semiconductors Co., Ltd Surface Mount, 3-pin, TRIAC, 600V, Gate Trigger 1.5V 600V
VND143,112.64Pack (1 Pack of 5) -
STMicroelectronics Surface Mount, 3-pin, TRIAC
VND150,402.56Reel (1 Reel of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND156,925.12Pack (1 Pack of 5) -
STMicroelectronics ULN2003D1013TR, 7-element NPN Darlington Transistor, 500 mA 50 V HFE:1000, 16-Pin SOIC
VND158,843.52Reel (1 Reel of 10) -
STMicroelectronics Through Hole, 3-pin, TRIAC, Gate Trigger 1.3V 600V
VND158,843.52Pack (1 Pack of 5) -
STMicroelectronics Switching Diode, 2A 600V, 2-Pin DO-41 STTH2R06
VND160,761.92Pack (1 Pack of 10) -
STMicroelectronics BDX34C PNP Darlington Transistor, 10 A 100 V HFE:750, 3-Pin TO-220
VND163,447.68Pack (1 Pack of 10) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND163,639.52 -
onsemi FGH60N60SFDTU IGBT, 120 A 600 V, 3-Pin TO-247, Through Hole
VND166,325.28 -
DiodesZetex BCR421UW6Q-7 Constant Current Diode, 10mA, 6-Pin SOT-26
VND168,819.20Reel (1 Reel of 20) -
Texas Instruments LM334M/NOPB Constant Current Diode, 10mA, 8-Pin SOIC
VND172,080.48Tube (1 Tube of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND180,137.76Pack (1 Pack of 2) -
Vishay Dual Switching Diode, Series, 150mA 100V, 3-Pin SOT-23 BAV99-E3-08
VND184,166.40Reel (1 Reel of 100)