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

5548 Products showing for Optocouplers & Photodetectors

1 of 278
Renesas, PS2911-1-F3-AX DC Input Phototransistor Output Photocoupler, Surface Mount, 4-Pin Mini-Flat
  • RS Stock No. 234-7097P
  • Mfr. Part No. PS2911-1-F3-AX
Each (Supplied on a Reel)
$3.448(exc. GST)
Vishay, CNY65EXI DC Input Phototransistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 708-5581P
  • Mfr. Part No. CNY65EXI
Each (Supplied in a Tube)
$9.73(exc. GST)
Broadcom, ACPL-217-56CE Transistor Output Photocoupler, Surface Mount, 4-Pin
  • RS Stock No. 261-9698P
  • Mfr. Part No. ACPL-217-56CE
Each (Supplied on a Reel)
$0.816(exc. GST)
Lite-On, LTV-817-C DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 168-9667
  • Mfr. Part No. LTV-817-C
Each (In a Tube of 100)
$0.333(exc. GST)
Isocom, 4N35 DC Input Transistor Output Optocoupler, Through Hole, 6-Pin PDIP
  • RS Stock No. 597-302
  • Mfr. Part No. 4N35
Each
$1.13(exc. GST)
IXYS, LOC110S Optocoupler
  • RS Stock No. 135-8087P
  • Mfr. Part No. LOC110S
Each (Supplied in a Tube)
$5.785(exc. GST)
onsemi, 4N26SR2M DC Input Phototransistor Output Optocoupler, Surface Mount, 6-Pin DIP
  • RS Stock No. 805-1166
  • Mfr. Part No. 4N26SR2M
Each (On a Tape of 20)
$0.863(exc. GST)
Lite-On, LTV-817D DC Input Transistor Output Optocoupler, Through Hole, 4-Pin PDIP
  • RS Stock No. 691-2173
  • Mfr. Part No. LTV-817D
Each (In a Pack of 10)
$0.346(exc. GST)
GP2Y0D21YK0F Sharp, Reflective Optical Sensor
  • RS Stock No. 666-6570P
  • Mfr. Part No. GP2Y0D21YK0F
Each (Supplied in a Box)
$11.50(exc. GST)
Vishay, SFH628A-4 Phototransistor Output Optocoupler, Through Hole, 4-Pin DIP
  • RS Stock No. 180-7756
  • Mfr. Part No. SFH628A-4
Each (In a Pack of 10)
$1.563(exc. GST)
onsemi, FODM3012R2-NF098 Phototriac Output Optocoupler, Surface Mount, 4-Pin MFP
  • RS Stock No. 802-3222
  • Mfr. Part No. FODM3012R2-NF098
Each (In a Pack of 10)
$1.509(exc. GST)
Lite-On, MOC3063 Triac Output Optocoupler, Through Hole, 6-Pin PDIP
  • RS Stock No. 691-2306
  • Mfr. Part No. MOC3063
Each (In a Pack of 5)
$1.538(exc. GST)
Renesas, PS2381-1Y-F3-AX DC Input Phototransistor Output Photocoupler, Surface Mount, 4-Pin LSOP
  • RS Stock No. 234-7066
  • Mfr. Part No. PS2381-1Y-F3-AX
Each (On a Reel of 3000)
$0.832(exc. GST)
Vishay, K3021PG Phototriac Output Optocoupler, Through Hole, 6-Pin DIP
  • RS Stock No. 708-5415P
  • Mfr. Part No. K3021PG
Each (Supplied in a Tube)
$0.808(exc. GST)
RPI-0128 ROHM, RPI SMT Reflective Optical Sensor, Phototransistor Output, RPI-0128 package
  • RS Stock No. 264-593P
  • Mfr. Part No. RPI-0128
Each (Supplied on a Reel)
$3.454(exc. GST)
Renesas, PS2911-1-F3-AX DC Input Phototransistor Output Photocoupler, Surface Mount, 4-Pin Mini-Flat
  • RS Stock No. 234-7097
  • Mfr. Part No. PS2911-1-F3-AX
Each (In a Pack of 5)
$3.632(exc. GST)
Vishay TSOP34836, 36kHz IR Receiver, 950nm, 45m Range, Through Hole, 6 x 5.6 x 6.95mm
  • RS Stock No. 700-5305P
  • Mfr. Part No. TSOP34836
Each (Supplied in a Tube)
$1.872(exc. GST)
Vishay TSOP4838, 38kHz IR Receiver, 950nm, 45m Range, 2.5 V - 5.5V, Through Hole, 6 x 5.6 x 6.95mm
  • RS Stock No. 708-5115P
  • Mfr. Part No. TSOP4838
Each (Supplied in a Tube)
$1.824(exc. GST)
Wurth Elektronik, 141815140010 Photodarlington Output Optocoupler, 4-Pin DIP
  • RS Stock No. 240-6995P
  • Mfr. Part No. 141815140010
Each (Supplied in a Tube)
$0.943(exc. GST)
Wurth Elektronik, 141815142000 Photodarlington Output Optocoupler, 4-Pin DIP
  • RS Stock No. 240-6998
  • Mfr. Part No. 141815142000
Each (On a Reel of 1500)
$0.745(exc. GST)
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