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. 284-1190
Mfr. Part No.SFH6156-2T
BrandVishay
$1.36
Each
units
Surface Mount Transistor 1.25V 1 4 SMD DC 3µs 60 mA 5300 Vrms - 125% 63 % 14µs
RS Stock No. 159-6455
Mfr. Part No.SFH6156-2T
BrandVishay
$0.329
Each (On a Reel of 1000)
units
Surface Mount Transistor 1.25V 1 4 SMD DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 110-185
Mfr. Part No.SFH615A-2
BrandVishay
$1.26
Each
units
Through Hole Transistor 1.65V 1 4 PDIP DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 919-1013
Mfr. Part No.6N139
BrandVishay
$1.252
Each (In a Tube of 50)
units
Through Hole Darlington 1.7V 1 8 DIP DC - 25 mA 5300 Vrms Yes 2000% - -
RS Stock No. 773-3615
Mfr. Part No.6N139
BrandVishay
$3.465
Each (In a Bag of 2)
units
Through Hole Darlington 1.7V 1 8 DIP DC - 25 mA 5300 Vrms Yes 2000% - -
RS Stock No. 145-1578
Mfr. Part No.SFH615A-2
BrandVishay
$0.294
Each (In a Tube of 100)
units
Through Hole Transistor 1.65V 1 4 PDIP DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 169-6162
Mfr. Part No.VO617A-2X017T
BrandVishay
$0.271
Each (On a Reel of 1000)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 4.6µs 60 mA 5.3 kVrms - 125% - 15µs
RS Stock No. 773-0152
Mfr. Part No.VO617A-2X017T
BrandVishay
$0.427
Each (In a Bag of 10)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 4.6µs 60 mA 5300 Vrms - 125% - 15µs
RS Stock No. 919-0076
Mfr. Part No.CNY17-3
BrandVishay
$0.347
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. 708-5304
Mfr. Part No.CNY17-3
BrandVishay
$0.965
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. 108-476
Mfr. Part No.SFH 6286-2T
BrandVishay
$1.298
Each (In a Pack of 5)
units
Surface Mount Transistor 1.5V 1 4 SMD AC - 50 mA 5.3 kVrms - 200% 63 % -
RS Stock No. 919-4362
Mfr. Part No.SFH 6286-2T
BrandVishay
$0.697
Each (On a Reel of 1000)
units
Surface Mount Transistor 1.5V 1 4 SMD AC - 50 mA 5300 V ac - 200% 63 % -
RS Stock No. 919-0086
Mfr. Part No.IL300-DEFG
BrandVishay
$3.67
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
RS Stock No. 708-5354
Mfr. Part No.IL300-DEFG
BrandVishay
$7.09
Each
units
Through Hole Photodiode 1.5V 1 8 PDIP DC 1.75µs 60 mA 5300 V ac - - - 1.75µs
RS Stock No. 169-6103
Mfr. Part No.VO615A-X017T
BrandVishay
$0.303
Each (On a Reel of 1000)
units
Through Hole Phototransistor 1.6V 1 4 PDIP DC 3µs 60 mA 5 kVrms - 600% 50 % 4.7µs
RS Stock No. 699-8455
Mfr. Part No.VO615A-X017T
BrandVishay
$0.255
Each (In a Pack of 20)
units
Through Hole Phototransistor 1.6V 1 4 PDIP DC 3µs 60 mA 5000 V ac - 600% 50 % 4.7µs
RS Stock No. 699-8161
Mfr. Part No.CNY17-2
BrandVishay
$0.80
Each (In a Pack of 10)
units
Through Hole Transistor 1.65V 1 6 PDIP DC 3µs 60 mA 5300 V ac - 125% 63 % 14µs
RS Stock No. 165-2463
Mfr. Part No.CNY17-2
BrandVishay
$0.44
Each (In a Tube of 50)
units
Through Hole Transistor 1.65V 1 6 PDIP DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 708-5364
Mfr. Part No.IL300
BrandVishay
$7.298
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. 919-0092
Mfr. Part No.IL300
BrandVishay
$2.985
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