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.
Related Products
The DC input single and multi-channel phototransistor optocouplers ...
Description:
The DC input single and multi-channel phototransistor optocouplers are used for power sequence controller and Input/Output interface applications.
A range of single channel optocouplers from Lite-On ...
Description:
A range of single channel optocouplers from Lite-On with photo-transistor outputs. These 6-pin devices allow access to the photo-transistor base and are available with a range of minimum current transfer ratios from 20% up to 160%. The range includes both ...
A range of single channel optocouplers from Lite-On ...
Description:
A range of single channel optocouplers from Lite-On with photo-transistor outputs. These 6-pin devices allow access to the photo-transistor base and are available with a range of minimum current transfer ratios from 20% up to 160%. The range includes both ...
Single, Dual and Quad format transistor output optocouplers ...
Description:
Single, Dual and Quad format transistor output optocouplers from Lite-On. This wide range of products includes devices with AC or DC inputs, and both through-hole and surface-mounting package options are available.