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

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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. 922-5804
Mfr. Part No.HCPL-2630-000E
BrandBroadcom
£1.744
Each (In a Tube of 50)
Units
Through Hole Transistor 1.75V 2 8 DIP DC 24ns 20 mA 3750 V ac Yes - - 10ns
RS Stock No. 760-3158
Mfr. Part No.TLP124(BV-TPL,F)
BrandToshiba
£0.375
Each (In a Pack of 10)
Units
Surface Mount Transistor 1.3V 1 4 SOP AC, DC 8µs 50 mA 3750 V ac - 1200% 200 % 8µs
RS Stock No. 547-3920
Mfr. Part No.HCPL-2630-000E
BrandBroadcom
£2.66
Each
Units
Through Hole Transistor 1.75V 2 8 DIP DC 24ns 20 mA 3.75 kVrms Yes - - 10ns
RS Stock No. 168-7412
Mfr. Part No.TLP124(BV,F)
BrandToshiba
£0.247
Each (On a Tape of 150)
Units
Surface Mount Transistor 1.3V 1 4 SOP AC, DC 8µs 50 mA 3.75 kVrms - 1200% 200 % 8µs
RS Stock No. 547-4074
Mfr. Part No.HCNR201-000E
BrandBroadcom
£3.76
Each
Units
Through Hole Photodiode 1.95V 1 8 PDIP-W DC - 25 mA 5 kVrms - - - -
RS Stock No. 922-5835
Mfr. Part No.HCNR201-000E
BrandBroadcom
£2.307
Each (In a Tube of 42)
Units
Through Hole Photodiode 1.95V 1 8 PDIP-W DC - 25 mA 5000 V ac - - - -
RS Stock No. 760-3154
Mfr. Part No.TLP124(BV,F)
BrandToshiba
£0.602
Each (In a Pack of 10)
Units
Surface Mount Transistor 1.3V 1 4 SOP AC, DC 8µs 50 mA 3750 V ac - 1200% 200 % 8µs
RS Stock No. 111-122A
Mfr. Part No.H11A1X
BrandIsocom
£0.295
Each (In a Pack of 50)
Units
Through Hole Phototransistor 1.5V 1 6 DIP DC 2µs 60 mA 5.3 kV ac - - - 2µs
RS Stock No. 922-5794
Mfr. Part No.HCPL-2200-000E
BrandBroadcom
£1.539
Each (In a Tube of 50)
Units
Through Hole Logic Gate 1.75V 1 8 DIP DC 55ns 5 mA 3750 V ac Yes - - 15ns
RS Stock No. 547-3908
Mfr. Part No.HCPL-2200-000E
BrandBroadcom
£2.36
Each
Units
Through Hole Logic Gate 1.75V 1 8 DIP DC 55ns 5 mA 3.75 kVrms Yes - - 15ns
RS Stock No. 708-5304
Mfr. Part No.CNY17-3
BrandVishay
£0.222
Each (In a Pack of 20)
Units
Through Hole Transistor 1.65V 1 6 PDIP DC 3µs 60 mA 5300 V ac - 200% 100 % 14µs
RS Stock No. 919-0076
Mfr. Part No.CNY17-3
BrandVishay
£0.202
Each (In a Tube of 50)
Units
Through Hole Transistor 1.65V 1 6 DIP DC 3µs 60 mA 5 kVrms - 200% - 14µs
RS Stock No. 171-2962
Mfr. Part No.H11A1X V2
BrandIsocom
£0.153
Each (In a Tube of 65)
Units
Through Hole Transistor 1.5V 1 6 DIP DC 2µs 60 (Forward) mA 5.3 kVrms, 7500 V Pk - - 50% 2µs
RS Stock No. 111-122
Mfr. Part No.H11A1X
BrandIsocom
£0.43
Each
Units
Through Hole Phototransistor 1.5V 1 6 DIP DC 2µs 60 mA 5.3 kVrms - - 50 % 2µs
RS Stock No. 166-1673
Mfr. Part No.FOD817B300
£0.085
Each (In a Bag of 2000)
Units
Through Hole Transistor 70V 1 4 DIP-B DC 18µs 50 mA 5 kVrms - 260% - 18µs
RS Stock No. 739-0259
Mfr. Part No.FOD817B300
£0.274
Each (In a Pack of 5)
Units
Through Hole Transistor 70V 1 4 DIP-B DC 18µs 50 mA 5000 Vrms - 260% - 18µs
RS Stock No. 708-5291
Mfr. Part No.BRT12H
BrandVishay
£2.69
Each
Units
Through Hole Triac - 1 6 PDIP - - 20 mA 5300 V ac - - - -
RS Stock No. 168-7587
Mfr. Part No.TLP185(GB,E(O
BrandToshiba
£0.171
Each (In a Tube of 125)
Units
Surface Mount Transistor 1.4V 1 4 SOIC DC 5µs 50 mA 3.75 kVrms - 400% 100 % 9µs
RS Stock No. 773-3693
Mfr. Part No.VO615A-5
BrandVishay
£0.458
Each (In a Bag of 5)
Units
Through Hole Phototransistor 1.6V 1 4 DIP DC 3µs 60 mA 5000 Vrms - 150% - 4.7µs
RS Stock No. 671-1456
Mfr. Part No.MOCD207M
£0.674
Each (In a Pack of 5)
Units
Surface Mount Transistor 1.55V 2 8 SOIC DC 1.6µs 60 mA 2.5 kVrms - 200% 100 % 2.2µs
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