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).

...
顯示內容 隱藏內容

篩選條件

正在檢視 61 - 80,共 504 項產品
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庫存編號 145-0726
製造零件編號ULQ2003AD
HK$4.841
毎管:40 個
單位
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 - - - 1.6 V
RS庫存編號 125-0077
製造零件編號MJF122G
HK$6.34
毎管:50 個
單位
NPN 8 A 100 V 5 V TO-220FP Through Hole 3 - Single 1 1000 - 100 V 3.5 V dc
RS庫存編號 103-5146
製造零件編號TIP120G
HK$4.604
毎管:50 個
單位
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 60 V 4 V
RS庫存編號 917-3374
製造零件編號ULN2801A
HK$8.137
/個 (每包:10個)
單位
- 500 mA 50 V - DIP Through Hole 18 - Common Emitter 8 1000 - - 1.6 V
RS庫存編號 485-9042
製造零件編號BDW93C
HK$6.612
/個 (每包:5個)
單位
NPN 12 A 100 V - TO-220 Through Hole 3 - Single 1 100 4 V 100 V 3 V
RS庫存編號 162-7587
製造零件編號ULQ2003ADR
HK$2.05
個 (在毎卷:2500)
單位
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 - - - 1.6 V
RS庫存編號 774-3653
製造零件編號TIP120G
HK$4.604
/個 (每包:10個)
單位
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 60 V 4 V
RS庫存編號 665-8696
製造零件編號ULQ2003ADR
HK$4.099
/個 (每包:10個)
單位
NPN 500 mA 50 V - SOIC Surface Mount 16 - Common Emitter 7 - - - 1.6 V
RS庫存編號 145-0190
製造零件編號ULN2003APW
HK$4.264
毎管:90 個
單位
NPN 500 mA 50 V - TSSOP Surface Mount 16 - Common Emitter 7 - - - 1.6 V
RS庫存編號 145-4629
製造零件編號TIP120TU
HK$6.72
毎管:50 個
單位
NPN 8 A 60 V 5 V TO-220 Through Hole 3 - Single 2 1000 - 60 V 4 V
RS庫存編號 419-1144
製造零件編號BU941ZPFI
HK$33.03
單位
NPN 15 A 350 V 5 V TO-3PF Through Hole 3 - Single 1 300 2.7 V - 2 V
RS庫存編號 313-6944
製造零件編號BD677
HK$3.52
單位
NPN 4 A 60 V 5 V SOT-32 Through Hole 3 - Single 1 750 - 60 V 2.5 V
RS庫存編號 163-0840
製造零件編號2N6052G
HK$44.599
Each (In a Tray of 100)
單位
PNP 12 A 100 V 5 V TO-204 Through Hole 2 - Single 1 100 4 V 100 V 3 V
RS庫存編號 920-8975
製造零件編號ULN2064B
HK$20.981
毎管:25 個
單位
NPN 1.75 A 50 V - PDIP Through Hole 16 - Common Emitter 4 - - - 1.4 V
RS庫存編號 809-5475
製造零件編號ULN2003LVDR
HK$5.47
單位
NPN 140 mA 8 V - SOIC Surface Mount 16 - Common Emitter 7 - - - 0.49 V
RS庫存編號 109-084
製造零件編號BD679
BrandMagnatec
HK$3.52
單位
NPN 4 A 80 V 5 V SOT-32 Through Hole 3 - Single 1 750 - 80 V 2.5 V
RS庫存編號 169-8767
製造零件編號TIP147TTU
HK$7.47
毎管:50 個
單位
PNP -10 A 100 V -5 V TO-220 Through Hole 3 - Single 2 500 -3.5 V -100 V -2 V
RS庫存編號 463-000
製造零件編號MJ11016G
HK$61.87
/個 (每包:2個)
單位
NPN 30 A 120 V 5 V TO-204 Through Hole 3 - Single 1 200 5 V 120 V 4 V
RS庫存編號 109-090
製造零件編號BD680
HK$7.31
單位
PNP 4 A 80 V 5 V SOT-32 Through Hole 3 - Single 1 750 - 80 V 2.5 V
RS庫存編號 792-4694
製造零件編號MJF122G
HK$7.44
/個 (每包:5個)
單位
NPN 8 A 100 V 5 V TO-220 Through Hole 3 - Single 1 1000 - 100 V 3.5 V dc