Optocouplers & Photodetectors

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.
Digital Isolator ICs
Digital Isolator ICs
IR Receivers
IR Receivers
IR Transceivers
IR Transceivers
Optocouplers
Optocouplers
Photodiodes
Photodiodes
Photomultipliers
Photomultipliers
Phototransistors
Phototransistors
Reflective Optical Sensors
Reflective Optical Sensors
Slotted Optical Switches
Slotted Optical Switches

5265 Products showing for Optocouplers & Photodetectors

1 of 264
In Stock
Renesas, PS2815-4-F3-A DC Input Phototransistor Output Quad Photocoupler, Surface Mount, 16-Pin SSOP
  • RS Stock No. 234-7090
  • Mfr. Part No. PS2815-4-F3-A
Each (In a Pack of 2)
TWD104.50(exc. GST)
In Stock
TCST2103 Vishay, Through Hole Slotted Optical Switch, Phototransistor Output
  • RS Stock No. 708-5553
  • Mfr. Part No. TCST2103
Each (In a Pack of 5)
TWD34.60(exc. GST)
Currently unavailable
Vishay, CNY74-4H DC Input Transistor Output Quad Optocoupler, Through Hole, 16-Pin PDIP
  • RS Stock No. 699-8170
  • Mfr. Part No. CNY74-4H
Each (In a Pack of 5)
TWD43.20(exc. GST)
In Stock
Broadcom, AFBR-S4N66P014M Visible Light 1-Element Photomultiplier, 420nm, Surface Mount 6.48 x 6.71 mm package
  • RS Stock No. 281-6143
  • Mfr. Part No. AFBR-S4N66P014M
Each
TWD2,110.00(exc. GST)
In Stock
Isocom, 6N138 DC Input Optocoupler, Through Hole, 8-Pin DIP
  • RS Stock No. 161-1147
  • Mfr. Part No. 6N138
Each (In a Pack of 10)
TWD28.80(exc. GST)
In Stock
Broadcom, AFBR-S4N44P014M Ultraviolet Photomultiplier, 420nm, Surface Mount 4.3 x 4.2 mm package
  • RS Stock No. 286-1283
  • Mfr. Part No. AFBR-S4N44P014M
Each
TWD874.00(exc. GST)
In Stock
Broadcom, HCPL-2531-000E DC Input Transistor Output Dual Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 547-3879
  • Mfr. Part No. HCPL-2531-000E
Each
TWD105.00(exc. GST)
In Stock
Broadcom, HCPL-063A-500E AC/DC Input Transistor Output Dual Optocoupler, Surface Mount, 8-Pin SO
  • RS Stock No. 174-4137
  • Mfr. Part No. HCPL-063A-500E
Each (In a Pack of 2)
TWD238.50(exc. GST)
In Stock
ams OSRAM, BPW 21 Full Spectrum Si Photodiode, Through Hole TO-39
  • RS Stock No. 497-5661
  • Mfr. Part No. BPW 21
Each
TWD384.00(exc. GST)
In Stock
onsemi, QSD2030F Si Photodiode, Through Hole 5mm package
  • RS Stock No. 805-0539P
  • Mfr. Part No. QSD2030F
Each (Supplied in a Bag)
TWD10.20(exc. GST)
In Stock
TCRT1000 Vishay, Through Hole Reflective Optical Sensor, Phototransistor Output
  • RS Stock No. 708-2737
  • Mfr. Part No. TCRT1000
Each (In a Bag of 5)
TWD18.40(exc. GST)
In Stock
BPW77NA Vishay, ±10 ° IR + Visible Light Phototransistor, Through Hole 3-Pin TO-18 package
  • RS Stock No. 815-1250
  • Mfr. Part No. BPW77NA
Each (In a Pack of 5)
TWD112.20(exc. GST)
Currently unavailable
Broadcom, ACPL-227-50BE DC Input Phototransistor Output Dual Optocoupler, Surface Mount, 8-Pin SO
  • RS Stock No. 178-1595
  • Mfr. Part No. ACPL-227-50BE
Each (On a Reel of 2000)
TWD14.30(exc. GST)
Limited stock
Renesas, PS2501-1-A DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 453-7499
  • Mfr. Part No. PS2501-1-A
Each
TWD22.00(exc. GST)
In Stock
Renesas, PS2562L-1-A DC Input Darlington Phototransistor Output Photocoupler, Surface Mount, 4-Pin Gull Wing, SMT
  • RS Stock No. 234-7082P
  • Mfr. Part No. PS2562L-1-A
Each (Supplied in a Tube)
TWD28.70(exc. GST)
In Stock
Vishay, VOS617A-4T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin SSOP
  • RS Stock No. 230-8399
  • Mfr. Part No. VOS617A-4T
Each (In a Pack of 25)
TWD6.80(exc. GST)
Temporarily out of stock
Sharp, PC367NJ0000F AC Input Transistor Output Optocoupler, Surface Mount, 4-Pin Mini-Flat
  • RS Stock No. 146-0790
  • Mfr. Part No. PC367NJ0000F
Each (In a Pack of 20)
TWD23.80(exc. GST)
In Stock
Broadcom, HCPL-7800-000E Transistor Output Optocoupler, Through Hole, 8-Pin PDIP
  • RS Stock No. 547-4197P
  • Mfr. Part No. HCPL-7800-000E
Each (Supplied in a Tube)
TWD306.00(exc. GST)
Last RS stock
BPW96B Vishay, ±20 ° IR Phototransistor, Through Hole 2-Pin 5mm (T-1 3/4) package
  • RS Stock No. 902-6654
  • Mfr. Part No. BPW96B
Each (In a Pack of 25)
TWD16.60(exc. GST)
In Stock
OSI Optoelectronics, UV-035EQ UV Si Photodiode, Through Hole TO-8
  • RS Stock No. 848-6281
  • Mfr. Part No. UV-035EQ
Each
TWD1,768.00(exc. GST)
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