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 ULN2074B Quad NPN Darlington Transistor, 1.75 A 50 V, 16-Pin PDIP
VND184,358.24 -
STMicroelectronics ULN2068B Quad NPN Darlington Transistor, 1.75 A 50 V, 16-Pin PDIP
VND184,358.24 -
Littelfuse Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 2V
VND188,386.88Pack (1 Pack of 2) -
Vishay Switching Diode, 1.5A 1000V, 2-Pin DO-219AB S07M-GS18
VND193,950.24Pack (1 Pack of 25) -
STMicroelectronics BTW69-600RG, Silicon Controlled Rectifier
VND194,333.92 -
Vishay VS-40TPS12-M3, Thyristor 1200V, 35A 150mA
VND195,484.96 -
STMicroelectronics TIP112 NPN Darlington Transistor, 2 A 100 V HFE:500, 3-Pin TO-220
VND199,321.76Pack (1 Pack of 10) -
Vishay BPW34S PIN Diode
VND199,321.76Pack (1 Pack of 10) -
WeEn Semiconductors Co., Ltd Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.5V 800V
VND200,089.12Pack (1 Pack of 20) -
Vishay VS-40TPS12A-M3, Thyristor 1200V, 35A 40mA
VND201,432.00 -
STMicroelectronics DB3TG DIAC 34V, 2A, 2-Pin DO-35
VND208,146.40Pack (1 Pack of 25) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND212,366.88Pack (1 Pack of 5) -
Vishay VS-70TPS12PBF, Thyristor 1200V, 70A 100mA
VND213,134.24 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND213,901.60 -
WeEn Semiconductors Co., Ltd BT258X-500R,127, Thyristor 500V, 5A 0.2mA
VND214,285.28Pack (1 Pack of 10) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 800V
VND220,232.32 -
WeEn Semiconductors Co., Ltd Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1V 800V
VND221,767.04Pack (1 Pack of 10) -
onsemi MMBFJ201 N-Channel JFET, Idss 0.3 to 1.5mA, 3-Pin SOT-23
VND222,150.72Pack (1 Pack of 25) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1V 600V
VND224,260.96Pack (1 Pack of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND233,469.28Tube (1 Tube of 5) -
Infineon IKW75N60TFKSA1 IGBT, 80 A 600 V, 3-Pin TO-247, Through Hole
VND234,044.80 -
STMicroelectronics Through Hole, 3-pin, TRIAC, 600V, Gate Trigger 1.3V 600V
VND235,004.00Tube (1 Tube of 5) -
STMicroelectronics Through Hole, 3-pin, TRIAC, 800V, Gate Trigger 1.3V 600V
VND235,963.20Pack (1 Pack of 5) -
Nexperia PUMD13,115 Dual NPN + PNP Digital Transistor, 100 mA, 50 V, 6-Pin SOT-363
VND238,265.28Reel (1 Reel of 50)