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)
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STMicroelectronics BTW69-600RG, Silicon Controlled Rectifier
VND191,700.12 -
STMicroelectronics TIP112 NPN Darlington Transistor, 2 A 100 V HFE:500, 3-Pin TO-220
VND196,620.36Pack (1 Pack of 10) -
STMicroelectronics DB3TG DIAC 34V, 2A, 2-Pin DO-35
VND205,325.40Pack (1 Pack of 25) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND209,488.68Pack (1 Pack of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND211,002.60 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 800V
VND217,247.52 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1V 600V
VND221,221.56Pack (1 Pack of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND230,305.08Tube (1 Tube of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND231,819.00Tube (1 Tube of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND232,765.20Pack (1 Pack of 5) -
STMicroelectronics Panel Mount, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND236,550.00 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND237,306.96Pack (1 Pack of 5) -
STMicroelectronics Panel Mount, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND241,848.72 -
-10.00%
STMicroelectronics STGF3NC120HD IGBT, 6 A 1200 V, 3-Pin TO-220FP, Through Hole
VND297,863.76VND244,498.08Tube (1 Tube of 5) -
STMicroelectronics BTW68-1200RG, Thyristor 1200V, 19A 50mA
VND247,336.68 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND256,798.68Pack (1 Pack of 5) -
STMicroelectronics BDX33C NPN Darlington Transistor, 10 A 100 V HFE:750, 3-Pin TO-220
VND259,637.28Pack (1 Pack of 10) -
STMicroelectronics STGW30NC120HD IGBT, 60 A 1200 V, 3-Pin TO-247, Through Hole
VND265,314.48Pack (1 Pack of 2) -
STMicroelectronics Panel Mount, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 800V
VND268,342.32 -
STMicroelectronics BTW67-1000, Thyristor 1000V, 32A 80mA
VND271,370.16 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 1200V, Gate Trigger 1.5V 1200V
VND289,158.72 -
STMicroelectronics ULN2003A, 7-element NPN Darlington Transistor, 500 mA 50 V HFE:1000, 16-Pin PDIP
VND381,318.60Tube (1 Tube of 25) -
STMicroelectronics MJD122T4 NPN Darlington Transistor, 16 A 100 V HFE:100, 3-Pin DPAK
VND404,216.64Reel (1 Reel of 20) -
STMicroelectronics Surface Mount, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 800V
VND424,654.56Pack (1 Pack of 5)