Optocoupler ICs

An optocoupler, 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 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

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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. 168-7813
Mfr. Part No.TLP187
BrandToshiba
kr 3,505
Each (In a Tube of 125)
Units
Surface Mount Darlington 1.4V 1 4 SOIC DC 40µs 150 mA 3.75 kVrms - 4000% - 15µs
RS Stock No. 166-2370
Mfr. Part No.H11AV1AM
kr 2,136
Each (In a Bag of 1000)
Units
Through Hole Phototransistor 1.7V 1 6 MDIP DC 15µs 60 mA 7.5 kVrms - 300% - 15µs
RS Stock No. 625-8772
Mfr. Part No.TLP523-4(F)
BrandToshiba
kr 27,02
Each
Units
Through Hole Darlington 1.3V 4 16 PDIP DC - 50 mA 2.5 kVrms - 2000% 1000 % -
RS Stock No. 171-7211
Mfr. Part No.CNY17F-2SMT&R
BrandIsocom
kr 3,468
Each (On a Reel of 1000)
Units
Surface Mount Phototransistor 1.65V 1 6 DIP DC 3µs 60 mA 5.3 kVrms, 7500 V Pk - 125% 63% 14µs
RS Stock No. 708-5275
Mfr. Part No.4N25
BrandVishay
kr 3,599
Each (In a Pack of 50)
Units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5000 V ac - 50% 20 % 2µs
RS Stock No. 699-8473
Mfr. Part No.VOD213T
BrandVishay
kr 6,989
Each (In a Pack of 10)
Units
Surface Mount Phototransistor 1.55V 2 8 SOIC DC 5µs 30 mA 4000 V ac - - 100 % 4µs
RS Stock No. 173-6598
Mfr. Part No.SFH600-4G
BrandIsocom
kr 1,689
Each (In a Tube of 65)
Units
Through Hole NPN Phototransistor 1.65V 1 6 DIP - 2µs 60 mA 5300 (Minimum) Vrms - 400% 200% 11µs
RS Stock No. 165-5432
Mfr. Part No.PVD1352NSPBF
BrandInfineon
kr 19,793
Each (In a Tube of 50)
Units
Surface Mount MOSFET - 1 8 DIP DC 150µs 25 mA 4 kVrms - - - 125µs
RS Stock No. 922-6582
Mfr. Part No.HCNR200-300E
BrandBroadcom
kr 20,037
Each (In a Tube of 42)
Units
Surface Mount Photodiode 1.95V 1 8 PDIP-W DC - 25 mA 5000 V ac - - - -
RS Stock No. 864-9246
Mfr. Part No.FODM3063
kr 4,258
Each (In a Pack of 5)
Units
Surface Mount Triac Driver 1.5V 1 4 Mini-Flat - - 60 mA 3750 Vrms - - - -
RS Stock No. 693-5895
Mfr. Part No.ACNW3190-000E
BrandBroadcom
kr 33,31
Each
Units
Through Hole - 1.95V 1 8 PDIP, PDIP-W DC 0.1µs - 5000 V ac Yes - - 0.1µs
RS Stock No. 171-8106
Mfr. Part No.H11AA3XSMT&R
BrandIsocom
kr 3,618
Each (On a Reel of 1000)
Units
Surface Mount Phototransistor 1.5V 1 6 DIP AC 4µs ±50 mA 5.3 kVrms, 7500 V Pk - - 50% 3µs
RS Stock No. 166-2065
Mfr. Part No.FOD4208
kr 14,872
Each (In a Bag of 1000)
Units
Through Hole Triac 1.5V 1 6 MDIP DC 60µs 30 mA 5 kVrms - - - 52µs
RS Stock No. 145-1647
Mfr. Part No.BRT12F
BrandVishay
kr 13,995
Each (In a Tube of 50)
Units
Through Hole Phototriac 1.35V 1 6 DIP DC - 20 mA 5.3 kVrms - - - -
RS Stock No. 919-0058
Mfr. Part No.4N26
BrandVishay
kr 3,599
Each (In a Tube of 50)
Units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5000 V ac - 50% 20 % 2µs
RS Stock No. 171-8140
Mfr. Part No.H11B1SMT&R
BrandIsocom
kr 2,831
Each (On a Reel of 1000)
Units
Surface Mount Photodarlington 1.5V 1 6 DIP DC 125µs 80 mA 5.3 kVrms, 7500 V Pk - - 500% 100µs
RS Stock No. 708-5471
Mfr. Part No.SFH615A-3
BrandVishay
kr 4,646
Each (In a Pack of 10)
Units
Through Hole Phototransistor 1.65V 1 4 PDIP DC 3µs 60 mA 5300 V ac - 200% 100 % 14µs
RS Stock No. 171-8645
Mfr. Part No.AQV253
BrandPanasonic
kr 44,67
Each
Units
Through Hole MOSFET - - 6 DIP DC - 50 mA 1.5 kVrms - - - -
RS Stock No. 885-1112
Mfr. Part No.TLP292(GR-TPL,E(T
BrandToshiba
kr 1,348
Each (In a Pack of 25)
Units
Surface Mount Phototransistor 1.4V 1 4 SO4 AC, DC 2µs ±50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 171-2954
Mfr. Part No.4N35SM
BrandIsocom
kr 1,891
Each (In a Tube of 65)
Units
Surface Mount Transistor 1.5V 1 6 SMD DC 2µs 60 (Forward) mA 5.3 kVrms, 7500 V Pk - - 100% 2µs