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. 178-3152
Mfr. Part No.6N136-000E
BrandBroadcom
£0.658
Each (In a Tube of 50)
Units
Through Hole Transistor 1.7V 1 8 PDIP DC - 25 mA 3.75 kVrms Yes 50% 19 % -
RS Stock No. 505-7051
Mfr. Part No.4N32(SHORT)
BrandToshiba
£0.537
Each (In a Pack of 10)
Units
Through Hole Darlington 1.5V 1 6 PDIP DC - 80 mA 2.5 kVrms - - - -
RS Stock No. 547-3699
Mfr. Part No.6N136-000E
BrandBroadcom
£1.09
Each
Units
Through Hole Transistor 1.7V 1 8 PDIP DC - 25 mA 3.75 kVrms Yes 50% 19 % -
RS Stock No. 922-5778
Mfr. Part No.HCPL-0600-000E
BrandBroadcom
£0.814
Each (In a Tube of 100)
Units
Through Hole Transistor 1.75V 1 8 SOIC DC 24ns 20 mA 3750 V ac Yes - - 10ns
RS Stock No. 769-0287
Mfr. Part No.TLP3042(S,C,F)
BrandToshiba
£0.522
Each (In a Pack of 5)
Units
Through Hole Phototriac 1.3V 1 5 PDIP DC - 50 mA 5000 Vrms - - - -
RS Stock No. 168-7595
Mfr. Part No.TLP3042(S,C,F)
BrandToshiba
£0.327
Each (In a Tube of 50)
Units
Through Hole Phototriac 1.3V 1 5 PDIP DC - 50 mA 5 kVrms - - - -
RS Stock No. 691-2221
Mfr. Part No.LTV-846
BrandLite-On
£0.62
Each (In a Pack of 2)
Units
Through Hole Transistor 1.4V 4 16 PDIP DC 4µs 50 mA 5 kVrms - 600% 50 % 3µs
RS Stock No. 919-0118
Mfr. Part No.ILD74
BrandVishay
£0.915
Each (In a Tube of 50)
Units
Through Hole Transistor 1.5V 2 8 PDIP DC - 60 mA 5300 V ac - 35% 12.5 % -
RS Stock No. 708-5389
Mfr. Part No.ILD74
BrandVishay
£1.48
Each (In a Pack of 5)
Units
Through Hole Transistor 1.5V 2 8 PDIP DC - 60 mA 5300 V ac - 35% 12.5 % -
RS Stock No. 885-1045
Mfr. Part No.TLP293-4(GB,E(T
BrandToshiba
£0.989
Each (In a Pack of 10)
Units
Surface Mount Phototransistor 1.4V 1 16 SOIC DC 2µs 50 mA 3.75 kVrms - 600% - 3µs
RS Stock No. 168-9677
Mfr. Part No.LTV-846
BrandLite-On
£0.539
Each (In a Tube of 25)
Units
Through Hole Transistor 1.4V 4 16 PDIP DC 4µs 50 mA 5 kVrms - 600% 50 % 3µs
RS Stock No. 691-2325
Mfr. Part No.6N137-L
BrandLite-On
£0.972
Each (In a Pack of 5)
Units
Through Hole Transistor 1.7V 1 8 DIP DC 20ns 15 mA 5 kVrms Yes - - 6.6ns
RS Stock No. 693-6794
Mfr. Part No.ACPL-244-500E
BrandBroadcom
£1.244
Each (In a Pack of 5)
Units
Surface Mount Transistor 1.4V 4 16 SOIC AC 2µs 50 mA 3 kVrms - 400% 20 % 3µs
RS Stock No. 168-7921
Mfr. Part No.PC357N2J000F
BrandSharp
£0.196
Each (On a Reel of 3000)
Units
- - 1.4V - - - - - 50 mA 3.75 kVrms - - - -
RS Stock No. 110-191
Mfr. Part No.ILD615-2
BrandVishay
£1.12
Each
Units
Through Hole Phototransistor 1.3V 2 8 PDIP DC 2.8µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 178-3154
Mfr. Part No.HCPL-4503-000E
BrandBroadcom
£1.029
Each (In a Tube of 50)
Units
Through Hole Transistor 1.7V 1 8 PDIP DC - 25 mA 3.75 kVrms Yes 50% 19 % -
RS Stock No. 168-9695
Mfr. Part No.6N137-L
BrandLite-On
£0.629
Each (In a Tube of 50)
Units
Through Hole Transistor 1.7V 1 8 DIP DC 20ns 15 mA 5 kVrms Yes - - 6.6ns
RS Stock No. 708-5364
Mfr. Part No.IL300
BrandVishay
£3.578
Each (In a Pack of 5)
Units
Through Hole Photodiode 1.5V 1 8 PDIP DC 1.75µs 60 mA 5300 V ac - - - 1.75µs
RS Stock No. 168-8539
Mfr. Part No.ISP817XC
BrandIsocom
£0.127
Each (In a Tube of 100)
Units
Through Hole Phototransistor 1.4V 1 4 PDIP DC 4µs 50 mA 5.3 kVrms - 400% 200 % 3µs
RS Stock No. 919-0092
Mfr. Part No.IL300
BrandVishay
£2.579
Each (In a Tube of 50)
Units
Through Hole Photodiode 1.5V 1 8 PDIP DC 1.75µs 60 mA 5300 V ac - - - 1.75µs
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