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. 145-2624
Mfr. Part No.ILQ615-4
BrandVishay
MYR9.46
Each (In a Tube of 25)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 4.6µs 60 mA 5.3 kVrms - 320% 160 % 15µs
RS Stock No. 708-5398
Mfr. Part No.ILQ615-4
BrandVishay
MYR13.272
Each (In a Pack of 5)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 4.6µs 60 mA 5300 V ac - 320% 160 % 15µs
RS Stock No. 919-0054
Mfr. Part No.4N25
BrandVishay
MYR1.226
Each (In a Tube of 50)
units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5000 V ac - 50% 20 % 2µs
RS Stock No. 145-1797
Mfr. Part No.VO2611
BrandVishay
MYR8.19
Each (In a Tube of 50)
units
Surface Mount Phototransistor 1.7V 1 8 DIP DC 23ns 15 mA 5.3 kVrms Yes - - 7ns
RS Stock No. 708-5121
Mfr. Part No.VO2611
BrandVishay
MYR9.24
Each (In a Pack of 5)
units
Surface Mount Phototransistor 1.7V 1 8 DIP DC 23ns 15 mA 5300 V ac Yes - - 7ns
RS Stock No. 699-8155
Mfr. Part No.4N35
BrandVishay
MYR1.672
Each (In a Pack of 20)
units
Through Hole Transistor 1.5V 1 6 PDIP DC - 50 mA 5000 V ac - 50% 40 % -
RS Stock No. 145-1837
Mfr. Part No.4N37
BrandVishay
MYR1.47
Each (In a Tube of 50)
units
Through Hole Transistor 1.5V 1 6 DIP DC 10µs 50 mA 5 kVrms - 50% - 10µs
RS Stock No. 165-2468
Mfr. Part No.4N35
BrandVishay
MYR1.30
Each (In a Tube of 50)
units
Through Hole Transistor 1.5V 1 6 PDIP DC - 50 mA 5 kVrms - 50% 40 % -
RS Stock No. 811-6172
Mfr. Part No.4N37
BrandVishay
MYR2.369
Each (In a Pack of 10)
units
Through Hole Transistor 1.5V 1 6 DIP DC 10µs 50 mA 5000 Vrms - 50% - 10µs
RS Stock No. 919-0076
Mfr. Part No.CNY17-3
BrandVishay
MYR1.397
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. 145-2598
Mfr. Part No.TCMT4100
BrandVishay
MYR3.422
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. 178-0898
Mfr. Part No.CNY17F-2
BrandVishay
MYR1.505
Each (In a Tube of 65)
units
Through Hole Phototransistor 1.65V 1 6 PDIP DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 699-8357
Mfr. Part No.TCMT4100
BrandVishay
MYR9.325
Each (In a Pack of 2)
units
Surface Mount Transistor 1.6V 4 16 Mini-Flat DC 3µs 60 mA 3750 V ac - 600% 50 % 4.7µs
RS Stock No. 708-5323
Mfr. Part No.CNY17F-2
BrandVishay
MYR1.538
Each (In a Pack of 10)
units
Through Hole Phototransistor 1.65V 1 6 PDIP DC 3µs 60 mA 5300 V ac - 125% 63 % 14µs
RS Stock No. 708-5285
Mfr. Part No.4N33
BrandVishay
MYR3.323
Each (In a Pack of 10)
units
Through Hole Darlington 1.5V 1 6 PDIP DC - 60 mA 5300 V ac - - 500 % -
RS Stock No. 773-0247
Mfr. Part No.VOM617A-4X001T
BrandVishay
MYR2.11
Each (On a Tape of 25)
units
Surface Mount Phototransistor 1.6V 1 4 SOP DC 7µs 60 mA 3750 Vrms - 320% - 12µs
RS Stock No. 165-2938
Mfr. Part No.VOM617A-4X001T
BrandVishay
MYR0.83
Each (On a Reel of 3000)
units
Surface Mount Phototransistor 1.6V 1 4 SOP DC 7µs 60 mA 3.75 kVrms - 320% - 12µs
RS Stock No. 919-0060
Mfr. Part No.4N33
BrandVishay
MYR1.659
Each (In a Tube of 50)
units
Through Hole Darlington 1.5V 1 6 PDIP DC - 60 mA 5300 V ac - - 500 % -
RS Stock No. 918-9840
Mfr. Part No.IL420
BrandVishay
MYR11.035
Each (In a Tube of 50)
units
Through Hole Triac - 1 6 PDIP - - 60 mA 5300 V ac - - - -
RS Stock No. 708-4715
Mfr. Part No.IL420
BrandVishay
MYR15.28
Each
units
Through Hole Triac - 1 6 PDIP - - 60 mA 5300 V ac - - - -