Optocoupler ICs

An optocoupler IC, also known as an opto-isolator or photocoupler, is a semiconductor device which is used to couple isolated circuits. Within an optocoupler you will find a light emitter and a light sensor. Optocouplers usually come in a semiconductor package, such as SOIC or PDIP.

How does an optocoupler IC work?
Optocouplers work by transferring energy from one circuit to another circuit via an optical transmission path, while providing electrical isolation
The light emitter device can come in the form of an LED (light emitting diode) that produces IR or visible light, or a laser diode. The light emitter receives the input and converts it into a light signal. The light detector senses the light emitter and converts it back into an electrical signal.

Optocouplers are often used in high-voltage applications to block the high voltages and variations in voltage. This ensures that, if there is a spike in one part of a circuit, it will not affect other parts. Therefore they are ideal for applications which may experience variations in voltage.

Types of Optocoupler:
• Resistive
• Photodiode
• Phototransistor
• Bidirectional

Output Types
• CMOS
• Darlington
• IGBT Gate Drive
• Logic Gate
• MOSFET
• Photodarlington
• Phototransistor
• Single Transistor
• TRIAC

...
Read more Read less

Filters

Viewing 61 - 80 of 3929 products
Results per page
Description Price Mounting Type Output Device Maximum Forward Voltage Number of Channels Number of Pins Package Type Input Current Type Typical Rise Time Maximum Input Current Isolation Voltage Logic Output Maximum Current Transfer Ratio Minimum Current Transfer Ratio Typical Fall Time
RS Stock No. 178-4749
Mfr. Part No.MOC3043M
£0.498
Each (In a Tube of 50)
Units
Through Hole Phototriac - 1 6 PDIP - - 60 mA 7.5 kVrms - - - -
RS Stock No. 616-5636
Mfr. Part No.KB814-B
BrandKingbright
£0.379
Each (In a Pack of 10)
Units
Surface Mount Transistor 1.4V 1 4 SMD AC 4µs 50 mA 5 kVrms - 300% 120 % 3µs
RS Stock No. 671-1434
Mfr. Part No.MOC3043M
£0.626
Each (In a Pack of 5)
Units
Through Hole Phototriac - 1 6 PDIP - - 60 mA 7.5 kVrms - - - -
RS Stock No. 922-5860
Mfr. Part No.HCPL-7800-000E
BrandBroadcom
£6.025
Each (In a Tube of 50)
Units
Through Hole Transistor - 1 8 PDIP - 4.3µs - 3750 V ac Yes - - -
RS Stock No. 547-4197
Mfr. Part No.HCPL-7800-000E
BrandBroadcom
£6.96
Each
Units
Through Hole Transistor - 1 8 PDIP - 4.3µs - 3.75 kVrms Yes - - -
RS Stock No. 352-5467
Mfr. Part No.AQY210EH
BrandPanasonic
£1.30
Each
Units
Through Hole MOSFET 1.5V - 4 DIP DC - 50 mA 5 kVrms - - - -
RS Stock No. 166-2916
Mfr. Part No.HMHA281R2
£0.14
Each (On a Reel of 2500)
Units
Surface Mount Phototransistor 1.3V 1 4 MFP DC 3µs 50 mA 3.75 kVrms Yes 600% - 3µs
RS Stock No. 802-3256
Mfr. Part No.HMHA281R2
£0.35
Each (In a Pack of 20)
Units
Surface Mount Phototransistor 1.3V 1 4 MFP DC 3µs 50 mA 3750 Vrms Yes 600% - 3µs
RS Stock No. 168-8541
Mfr. Part No.ISP827XB
BrandIsocom
£0.27
Each (In a Tube of 50)
Units
Through Hole Phototransistor 1.4V 2 8 PDIP DC 4µs 50 mA 5.3 kVrms - 260% 130 % 3µs
RS Stock No. 453-0684
Mfr. Part No.ISP827XB
BrandIsocom
£0.682
Each (In a Pack of 5)
Units
Through Hole Phototransistor 1.4V 2 8 PDIP DC 4µs 50 mA 5.3 kVrms - 260% 130 % 3µs
RS Stock No. 625-8772
Mfr. Part No.TLP523-4(F)
BrandToshiba
£2.30
Each
Units
Through Hole Darlington 1.3V 4 16 PDIP DC - 50 mA 2.5 kVrms - 2000% 1000 % -
RS Stock No. 170-0941
Mfr. Part No.OPI1264C
BrandOptek
£1.833
Each (In a Bag of 25)
Units
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 15 kV dc Vrms - Minimum of 100% - -
RS Stock No. 691-2108
Mfr. Part No.LTV-816
BrandLite-On
£0.137
Each (In a Pack of 10)
Units
Through Hole Transistor 1.4V 1 4 PDIP DC 4µs 50 mA 5 kVrms - 320% 40 % 3µs
RS Stock No. 880-1952
Mfr. Part No.OPI1264C
BrandOptek
£2.015
Each (In a Pack of 2)
Units
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 10 Vrms - Minimum of 100% - -
RS Stock No. 168-9659
Mfr. Part No.LTV-816
BrandLite-On
£0.118
Each (In a Tube of 100)
Units
Through Hole Transistor 1.4V 1 4 PDIP DC 4µs 50 mA 5 kVrms - 320% 40 % 3µs
RS Stock No. 178-4756
Mfr. Part No.MOC3041M
£0.442
Each (In a Tube of 50)
Units
Through Hole Triac 1.5V 1 6 DIP DC - 60 mA 7.5 kVrms Yes - - -
RS Stock No. 415-304
Mfr. Part No.TLP701(TP,F)
BrandToshiba
£1.59
Each (In a Pack of 2)
Units
Surface Mount Logic Gate 1.7V 1 6 SDIP DC 0.05µs - 5 kVrms Yes - - 0.05µs
RS Stock No. 739-0252
Mfr. Part No.MOC3041M
£0.578
Each (In a Pack of 5)
Units
Through Hole Triac 1.5V 1 6 DIP DC - 60 mA 7500 V ac Yes - - -
RS Stock No. 695-6268
Mfr. Part No.TLP701(F)
BrandToshiba
£2.36
Each
Units
Surface Mount IC 1.75V 1 6 SDIP DC 50ns 20 mA 5000 V ac Yes - - 50ns
RS Stock No. 453-7512
Mfr. Part No.PS2501-4
£2.26
Each
Units
Through Hole Transistor 1.4V 4 16 PDIP DC 3µs 80 mA 5000 Vrms - 600% 80 % 5µs
Related Products
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 1.27mm High AC Isolation voltage 3750VRMSCTR Selections Available Wide Operating Temperature Range -55°C to 110°CAPPLICATIONS:Switching Mode Power Supply Industrial System Controllers ...
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 500% minimum. Parts with the suffix A or B are ...
The TLP521-4 are quad channel optocouplers. Each channel ...
Description:
The TLP521-4 are quad channel optocouplers. Each channel is composed of a Gallium Arsenide infra-red emitting diode and a silicon phototransistor. Package style for this devices is 16 pin, with surface mount. Performance guaranteed over -55°C to +125°C temperature range High current transfer ratio7500V electrical isolation.
High collector-to-emitter voltage photocouplers (optocouplers) are optically coupled ...
Description:
High collector-to-emitter voltage photocouplers (optocouplers) are optically coupled isolators containing a Ga As infrared light emitting diode and an NPN silicon Darlington connected phototransistor. The isolation voltage during input and output and the voltage between the collector and the emitter of the transistor are both high. High collector to emitter ...