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. 631-1182
Mfr. Part No.ILD206T
BrandVishay
HK$7.93
Each (In a Pack of 10)
units
Surface Mount Transistor 1.55V 2 8 SOIC DC - 30 mA 4 kVrms - 125% 63 % -
RS Stock No. 159-6466
Mfr. Part No.ILD206T
BrandVishay
HK$3.96
Each (On a Reel of 2000)
units
Surface Mount Transistor 1.55V 2 8 SOIC DC - 30 mA 4 kVrms - 125% 63 % -
RS Stock No. 919-4312
Mfr. Part No.6N136
BrandVishay
HK$10.398
Each (In a Tube of 50)
units
Through Hole Transistor 1.9V 1 8 DIP DC - 25 mA 5300 Vrms - 35% - -
RS Stock No. 165-4915
Mfr. Part No.SFH6186-3T
BrandVishay
HK$3.19
Each (On a Reel of 1000)
units
Surface Mount Transistor 1.5V 1 4 SMD DC 3.5µs 60 mA 5.3 kVrms - 200% 100 % 5µs
RS Stock No. 815-1030
Mfr. Part No.6N136
BrandVishay
HK$8.56
Each (In a Pack of 10)
units
Through Hole Transistor 1.9V 1 8 DIP DC - 25 mA 5300 Vrms - 35% - -
RS Stock No. 699-8284
Mfr. Part No.TCLT1000
BrandVishay
HK$4.38
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.6V 1 4 SOP DC 3µs 60 mA 5000 V ac - 600% 50 % 4.7µs
RS Stock No. 165-2318
Mfr. Part No.TCLT1000
BrandVishay
HK$2.048
Each (On a Reel of 3000)
units
Surface Mount Phototransistor 1.6V 1 4 SOP DC 3µs 60 mA 5 kVrms - 600% 50 % 4.7µs
RS Stock No. 284-1190
Mfr. Part No.SFH6156-2T
BrandVishay
HK$7.53
Each
units
Surface Mount Transistor 1.25V 1 4 SMD DC 3µs 60 mA 5300 Vrms - 125% 63 % 14µs
RS Stock No. 178-0924
Mfr. Part No.SFH615A-3
BrandVishay
HK$3.35
Each (In a Tube of 100)
units
Through Hole Phototransistor 1.65V 1 4 PDIP DC 3µs 60 mA 5.3 kVrms - 200% 100 % 14µs
RS Stock No. 159-6455
Mfr. Part No.SFH6156-2T
BrandVishay
HK$2.31
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. 708-5471
Mfr. Part No.SFH615A-3
BrandVishay
HK$4.43
Each (In a Pack of 10)
units
Through Hole Phototransistor 1.65V 1 4 PDIP DC 3µs 60 mA 5300 V ac - 200% 100 % 14µs
RS Stock No. 919-0127
Mfr. Part No.ILQ621GB
BrandVishay
HK$19.85
Each (In a Tube of 25)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 2.8µs 60 mA 5300 V ac - 600% 100 % 11µs
RS Stock No. 145-1578
Mfr. Part No.SFH615A-2
BrandVishay
HK$3.21
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. 773-0212
Mfr. Part No.VOM160NT
BrandVishay
HK$6.55
Each (On a Tape of 10)
units
Surface Mount Phototriac 1.5V 1 4 SOP DC - 60 mA 3750 Vrms - - - -
RS Stock No. 708-5405
Mfr. Part No.ILQ621GB
BrandVishay
HK$26.18
Each (In a Pack of 5)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 2.8µs 60 mA 5300 V ac - 600% 100 % 11µs
RS Stock No. 699-8177
Mfr. Part No.CNY74-2H
BrandVishay
HK$6.03
Each (In a Pack of 10)
units
Through Hole Transistor 1.6V 2 8 PDIP DC 3µs 60 mA 5300 V ac - 600% 50 % 4.7µs
RS Stock No. 699-8464
Mfr. Part No.VOD205T
BrandVishay
HK$6.40
Each (In a Pack of 10)
units
Surface Mount Transistor 1.55V 2 8 SOIC DC 5µs 30 mA 4000 V ac - 80% 40 % 4µs
RS Stock No. 165-2584
Mfr. Part No.SFH6156-1T
BrandVishay
HK$2.25
Each (On a Reel of 1000)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 2µs 60 mA 5.3 kVrms - 80% 40 % 11µs
RS Stock No. 710-5064
Mfr. Part No.SFH615A-4X018T
BrandVishay
HK$6.85
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 PDIP DC 4µs 60 mA 5300 V ac - 320% 160 % 15µs
RS Stock No. 699-8219
Mfr. Part No.SFH6156-1T
BrandVishay
HK$5.52
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 2µs 60 mA 5300 V ac - 80% 40 % 11µs