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 typesDarlington 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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Description Prix 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
N° de stock RS 714-1167
Référence fabricantULN2803A
1,062 €
Each (In a Pack of 5)
Unité
NPN 500 mA 50 V 50 V PDIP Through Hole 18 - Common Emitter 8 1000 - - 1.1 V
N° de stock RS 168-6833
Référence fabricantULN2803A
0,911 €
Each (In a Tube of 20)
Unité
NPN 500 mA 50 V 50 V PDIP Through Hole 18 - Common Emitter 8 1000 - - 1.1 V
N° de stock RS 686-8209
Référence fabricantULN2003A
0,462 €
Each (In a Pack of 20)
Unité
NPN 500 mA 50 V - PDIP Through Hole 16 - Common Emitter 7 1000 - - 1.6 V
N° de stock RS 168-6450
Référence fabricantULN2003A
0,42 €
Each (In a Tube of 25)
Unité
NPN 500 mA 50 V - PDIP Through Hole 16 - Common Emitter 7 1000 - - 1.6 V
N° de stock RS 102-4091
Référence fabricantTIP142
1,415 €
Each (In a Tube of 30)
Unité
NPN 10 A 100 V 5 V TO-247 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 486-0294
Référence fabricantTIP142
1,68 €
Each (In a Pack of 5)
Unité
NPN 10 A 100 V 5 V TO-247 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 102-4105
Référence fabricantBDX54C
0,456 €
Each (In a Tube of 50)
Unité
PNP 8 A 100 V 5 V TO-220 Through Hole 3 - Single 1 750 2.5 V 100 V 2 V
N° de stock RS 714-2690
Référence fabricantBDX54C
0,501 €
Each (In a Pack of 10)
Unité
PNP 8 A 100 V 5 V TO-220 Through Hole 3 - Single 1 750 2.5 V 100 V 2 V
N° de stock RS 102-4104
Référence fabricantTIP147
1,145 €
Each (In a Tube of 30)
Unité
PNP 10 A 100 V 5 V TO-247 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 485-8667
Référence fabricantTIP142T
1,296 €
Each (In a Pack of 5)
Unité
NPN 10 A 100 V 5 V TO-220 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 486-0301
Référence fabricantTIP147
1,29 €
Each
Unité
PNP 10 A 100 V 5 V TO-247 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 102-4089
Référence fabricantTIP142T
1,112 €
Each (In a Tube of 50)
Unité
NPN 10 A 100 V 5 V TO-220 Through Hole 3 - Single 1 500 - 100 V 3 V
N° de stock RS 919-6472
Référence fabricantULN2003D1013TR
0,148 €
Each (On a Reel of 2500)
Unité
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 1000 - - 1.6 V
N° de stock RS 426-229
Référence fabricantULN2003D1013TR
0,372 €
Each (In a Pack of 10)
Unité
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 1000 - - 1.6 V
N° de stock RS 168-6057
Référence fabricantBD682
0,513 €
Each (In a Tube of 50)
Unité
PNP 4 A 100 V 5 V SOT-32 Through Hole 3 - Single 1 750 - 100 V 2.5 V
N° de stock RS 251-9893
Référence fabricantBD682
0,61 €
Each (In a Pack of 5)
Unité
PNP 4 A 100 V 5 V SOT-32 Through Hole 3 - Single 1 750 - 100 V 2.5 V
N° de stock RS 102-4103
Référence fabricantBDW94C
0,651 €
Each (In a Tube of 50)
Unité
PNP 12 A 100 V - TO-220 Through Hole 3 - Single 1 100 4 V 100 V 3 V
N° de stock RS 251-3299
Référence fabricantTIP125
0,53 €
Each
Unité
PNP 5 A 60 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 60 V 4 V
N° de stock RS 168-6447
Référence fabricantULN2804A
0,826 €
Each (In a Tube of 20)
Unité
- - 50 V - PDIP Through Hole 18 - - - - - - -
N° de stock RS 436-9779
Référence fabricantTIP112
0,566 €
Each (In a Pack of 10)
Unité
NPN 2 A 100 V 5 V TO-220 Through Hole 3 - Single 1 500 - 100 V 2.5 V