Optocouplers, Photodetectors & Photointerrupters

We offer an extensive range of optocouplers (opto-isolators), photodetectors AND photointerrupter modules. Our range features leading brands such as Avago Technologies, Fairchild & Vishay.

What are optocouplers?

An Optocoupler, also known as a photocoupler or optical isolator, is an electronic component that interconnects two electrical circuits using an LED and a phototransistor, housed in the same opaque package. There are also other types of source-sensor combinations which include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. These different pairings can have various effects as a result of the materials used, such as impact on speed. Optocouplers are used mainly to couple isolated circuits and have a range of uses in both domestic and industrial applications - often used on building sites.

We stock:

  • Photodiodes: also known as a diode, is a semiconductor device that converts light into an electrical current, generated when photons are absorbed. Other types of optocouplers include photodarlingtons and TRIACs.
  • Reflective optical sensors: normally used in automotive production, but can also be found in manufacturing processes to ensure they run smoothly. They use a system of mirrors and light beams that sense when they are interrupted to report and show faults.
  • Digital isolators: used to ensure accuracy in circuits by eliminating ground loop errors to improve performance. They can also help develop component safety as isolation devices allowing circuits to coexist and communicate without interruption or signal interference.
Calibrate new and existing equipment
Get a quote online, quick and easy
Return online within 30 days
Related Products
Light dependent resistors are two cadmium sulphide (c ...
Description:
Light dependent resistors are two cadmium sulphide (c DS) photoconductive cells with responses similar to that of the human eye. The cell resistance falls with increasing light intensity. Solid-state photosensor that uses photoconductivity to lower resistance value when irradiated with light Ceramic package with sensitivity up to 690 nm TO-5 ...
PIN-UDT-455 | PIN-UDT-455 OSI Optoelectronics, 970nm Infrared Photodetector ...
Description:
PIN-UDT-455 | PIN-UDT-455 OSI Optoelectronics, 970nm Infrared Photodetector Amplifier, Through Hole TO-5 package
This family of position sensing detectors (PSD), from ...
Description:
This family of position sensing detectors (PSD), from OSI Optoelectronics, utilise duo-lateral technology. They provide a continuous analogue output which offer high position accuracy over the majority of the sensing area. One or two dimensional positions can be measured using this range of PSDs.Suitable applications for these position sensing detectors ...
The QSD122, QSD123, QSD124 is a silicon phototransistor ...
Description:
The QSD122, QSD123, QSD124 is a silicon phototransistor encapsulated in an infrared transparent, black T-1 3/4 package. NPN silicon phototransistor Package type: T-1 3/4Notched emitter: QED12X/QED22X/QED23XNarrow reception angle: 24°CDaylight filter Package material and colour: black epoxy High sensitivity Applications:This product is general usage and suitable for many different applications.