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).

...
Read more Read less

Filters

Viewing 501 - 505 of 505 products
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 Stock No. 2508958519
Mfr. Part No.NTE248
HK$73.90
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958575
Mfr. Part No.NTE252
HK$108.36
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962962
Mfr. Part No.NTE172A
HK$7.32
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962473
Mfr. Part No.NTE245
HK$59.22
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508963123
Mfr. Part No.NTE253
HK$16.10
Each
units
- - - - - - - - - - - - - -
Related Products
RS Pro flexible alarm cable comprised of multi ...
Description:
RS Pro flexible alarm cable comprised of multi conductor cables. Applications include connecting alarm centres to motion detectors or digicodes. Rigid bare copper conductorPVC InsulationFlame retardant outer sheathRip cord.
A shielded security and alarm cable for commercial ...
Description:
A shielded security and alarm cable for commercial applications. Features and Benefits· Bare copper stranded conductor· PVC or LSNH jackets with rip cord· Beldfoil shield tape with drain wire· Grey flame retardant non-corrosive jacket.
Suitable for intercom/P.A. and general sound/audio systems. Features ...
Description:
Suitable for intercom/P.A. and general sound/audio systems. Features and Benefits·Bare copper stranded conductor·Voltage Rating: 300V.
The RS range of intruder alarm signal cable ...
Description:
The RS range of intruder alarm signal cable is made of the highest quality raw materials. 7 strandsGrade 1 tinned annealed copper conductorsPVC insulatedLead and tin freeWhite PVC sheathEasy to stripFlexible100 and 500m lengths.