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
New
RS Stock No. 210-8051
Mfr. Part No.140816143100
£0.198
Each (In a Pack of 50)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8057
Mfr. Part No.140816143400
£0.198
Each (In a Pack of 50)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8018
Mfr. Part No.140816140010
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8024
Mfr. Part No.140816140310
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8029
Mfr. Part No.140816141010
£0.198
Each (In a Pack of 50)
Units
Through Hole - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8055
Mfr. Part No.140816143300
£0.198
Each (In a Pack of 50)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8019
Mfr. Part No.140816140010
£0.198
Each (In a Pack of 50)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8025
Mfr. Part No.140816140310
£0.198
Each (In a Pack of 50)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8052
Mfr. Part No.140816143200
£0.163
Each (On a Reel of 1500)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8030
Mfr. Part No.140816141110
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8066
Mfr. Part No.140816144400
£0.163
Each (On a Reel of 1500)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8022
Mfr. Part No.140816140210
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8058
Mfr. Part No.140816144000
£0.163
Each (On a Reel of 1500)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8020
Mfr. Part No.140816140110
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8035
Mfr. Part No.140816141310
£0.244
Each (In a Pack of 25)
Units
Through Hole - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8036
Mfr. Part No.140816141410
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8060
Mfr. Part No.140816144100
£0.163
Each (On a Reel of 1500)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8026
Mfr. Part No.140816140410
£0.178
Each (In a Tube of 100)
Units
Through Hole - 1.4V 4 4 DIP DC - - - - - - -
New
RS Stock No. 210-8053
Mfr. Part No.140816143200
£0.198
Each (In a Pack of 50)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -
New
RS Stock No. 210-8064
Mfr. Part No.140816144300
£0.188
Each (On a Reel of 1500)
Units
Surface Mount - 1.4V 4 4 - DC - - - - - - -