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. 671-2734
Mfr. Part No.H11L1SR2VM
TWD38.00
Each (In a Pack of 5)
units
Surface Mount Logic Gate 1.5V - 6 DIP DC 0.1µs 60 mA 7.5 kVrms Yes - - 0.1µs
RS Stock No. 145-2598
Mfr. Part No.TCMT4100
BrandVishay
TWD26.60
Each (On a Reel of 2000)
units
Surface Mount Transistor 1.6V 4 16 Mini-Flat DC 3µs 60 mA 3.75 kVrms - 600% 50 % 4.7µs
RS Stock No. 174-3672
Mfr. Part No.HCPL-315J-500E
BrandBroadcom
TWD108.50
Each (On a Reel of 850)
units
Surface Mount IGBT, MOSFET 1.95V 2 8 SO - 0.1µs 16 mA 5000 Vrms Yes - - 0.1µs
New
RS Stock No. 215-5733
Mfr. Part No.ACPL-W341-500E
BrandBroadcom
TWD51.60
Each (On a Reel of 1000)
units
Surface Mount IGBT Gate Drive 1.95V 1 6 SO DC - - - - - - -
RS Stock No. 896-2561
Mfr. Part No.TLP4227G-2(F)
BrandToshiba
TWD97.00
Each (In a Pack of 2)
units
Through Hole MOSFET 1.3V 2 8 DIP AC - 50 mA 5000 Vrms - - - -
RS Stock No. 174-4126
Mfr. Part No.HCNR201-500E
BrandBroadcom
TWD170.50
Each (In a Pack of 2)
units
Surface Mount Photodiode 1.95V 1 8 DIP DC - 40 mA 5000 Vrms - 0.72% 0.36% -
RS Stock No. 196-3303
Mfr. Part No.RV1S2281ACCSP-10YC#SC0
TWD18.10
Each (In a Pack of 25)
units
Surface Mount - 1.4V 1 4 - DC 4µs 30 mA 5 kVrms - 400% 50% 5µs
RS Stock No. 168-9694
Mfr. Part No.6N139-L
BrandLite-On
TWD15.60
Each (In a Tube of 50)
units
Through Hole Phototransistor 1.7V 1 8 DIP DC - 20 mA 5 kVrms Yes 5000% 500 % -
RS Stock No. 671-2706
Mfr. Part No.FOD3180SDV
TWD100.00
Each
units
Surface Mount MOSFET 1.8V 1 8 DIP DC 75ns 25 mA 5 kVrms Yes - - 55ns
RS Stock No. 734-4956
Mfr. Part No.ACPL-P302-000E
BrandBroadcom
TWD85.00
Each
units
Surface Mount Transistor 1.8V 1 6 SO DC 50ns 12 mA 3750 V ac Yes - - 50ns
RS Stock No. 180-8281
Mfr. Part No.IL4118
BrandVishay
TWD106.10
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 174-3619
Mfr. Part No.ACPL-M43T-500E
BrandBroadcom
TWD53.90
Each (On a Reel of 1500)
units
Surface Mount Transistor 1.85V 1 5 SO - - 20 mA - Yes 100% 32% -
RS Stock No. 806-6023
Mfr. Part No.MOC3041SM
TWD26.70
Each (In a Pack of 10)
units
Surface Mount Triac 1.5V 1 6 DIP AC - 60 mA 7500 V ac Yes - - -
RS Stock No. 185-8633
Mfr. Part No.MOC8021SM
TWD28.30
Each (In a Pack of 10)
units
Surface Mount - 2V 1 6 SMT - - 60 mA 4170 Vrms ac - - 1000% -
RS Stock No. 756-3797
Mfr. Part No.TLP785(GR,F(C
BrandToshiba
TWD9.20
Each (In a Pack of 10)
units
Through Hole Transistor 1.3V 1 4 DIP DC 2µs 25 mA 5000 V ac Yes 300% 100 % 3µs
RS Stock No. 671-1406
Mfr. Part No.HCPL0600
TWD87.00
Each
units
Surface Mount Logic Gate 1.8V 1 8 SOIC DC 50ns 15 mA 3.75 kVrms Yes - - 12ns
RS Stock No. 756-3665
Mfr. Part No.TLP719F(D4-TP,F)
BrandToshiba
TWD144.00
Each
units
Surface Mount Phototransistor 1.85V 1 6 SDIP DC - 25 mA 5000 V ac Yes 20% - -
RS Stock No. 174-3625
Mfr. Part No.ACPL-W50L-560E
BrandBroadcom
TWD37.30
Each (On a Reel of 1000)
units
Surface Mount - 1.95V 1 6 SO DC - 40 mA 5000 Vrms Yes 200% 93% -
RS Stock No. 180-7193
Mfr. Part No.SFH6106-2
BrandVishay
TWD27.30
Each (In a Pack of 20)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 3µs 60 mA 5.3 kVrms - 125% 22 %, 63 % 14µs
RS Stock No. 699-8221
Mfr. Part No.SFH6156-2X001T
BrandVishay
TWD25.30
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 3µs 60 mA 5300 V ac - 125% 63 % 14µs