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
These devices are single optocouplers. Each channel is ...
Description:
These devices are single optocouplers. Each channel is composed of a Gallium Arsenide infra-red emitting diode and a silicon photo transistor. Package styles for these devices are 4pin with surface mount, butt cut and gull wing options available. The same ...
The TIL197, TIL198, TIL199 series of optically coupled ...
Description:
The TIL197, TIL198, TIL199 series of optically coupled isolators consist of infrared light emitting diodes and NPN silicon photo darlingtons in space efficient dual in line plastic packages. The standard parts TIL197, TIL198, TIL199 are tested for a CTR of ...
The IS281 series optocoupler consists of an infrared ...
Description:
The IS281 series optocoupler consists of an infrared emitting diode optically coupled to an NPN silicon photo transistor. This device belongs to Isocom Compact Range of Optocouplers. Half Pitch 1.27mmHigh AC Isolation voltage 3750VRMSCTR Selections AvailableWide Operating Temperature Range -55°C ...
The PT3009 series are constructed from a Gallium ...
Description:
The PT3009 series are constructed from a Gallium Arsenide Infrared Emitting Diode and Silicon Triac Bi directional (double Thyristor) Detector, housed in a plastic package. Surface Mount Option Available. All electrical parameters are 100% tested by manufacturing. Specifications are guaranteed ...