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. 919-0060
Mfr. Part No.4N33
BrandVishay
SGD0.59
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. 708-5285
Mfr. Part No.4N33
BrandVishay
SGD0.818
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. 145-1921
Mfr. Part No.SFH628A-3
BrandVishay
SGD0.925
Each (In a Tube of 100)
units
Through Hole Transistor 1.5V 1 4 PDIP AC - 50 mA 5.3 kVrms - 320% 100 % -
RS Stock No. 699-8278
Mfr. Part No.SFH628A-3
BrandVishay
SGD1.66
Each (In a Pack of 5)
units
Through Hole Transistor 1.5V 1 4 PDIP AC - 50 mA 5300 V ac - 320% 100 % -
RS Stock No. 159-6466
Mfr. Part No.ILD206T
BrandVishay
SGD0.68
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. 631-1182
Mfr. Part No.ILD206T
BrandVishay
SGD1.712
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. 284-1190
Mfr. Part No.SFH6156-2T
BrandVishay
SGD1.23
Each
units
Surface Mount Transistor 1.25V 1 4 SMD DC 3µs 60 mA 5300 Vrms - 125% 63 % 14µs
RS Stock No. 165-2642
Mfr. Part No.SFH690ABT
BrandVishay
SGD0.321
Each (On a Reel of 2000)
units
Surface Mount Transistor 1.4V 1 4 SOP DC 3µs 50 mA 3.75 kVrms - 300% 50 % 4µs
RS Stock No. 145-1627
Mfr. Part No.VO2630
BrandVishay
SGD3.783
Each (In a Tube of 50)
units
Surface Mount Phototransistor 1.7V 2 8 DIP DC 23ns 15 mA 5.3 kVrms Yes - - 7ns
RS Stock No. 159-6455
Mfr. Part No.SFH6156-2T
BrandVishay
SGD0.437
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. 708-5124
Mfr. Part No.VO2630
BrandVishay
SGD4.672
Each (In a Pack of 5)
units
Surface Mount Phototransistor 1.7V 2 8 DIP DC 23ns 15 mA 5300 V ac Yes - - 7ns
RS Stock No. 699-8271
Mfr. Part No.SFH690ABT
BrandVishay
SGD0.798
Each (In a Pack of 10)
units
Surface Mount Transistor 1.4V 1 4 SOP DC 3µs 50 mA 3750 V ac - 300% 50 % 4µs
RS Stock No. 699-8206
Mfr. Part No.SFH6106-4T
BrandVishay
SGD1.37
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 4µs 60 mA 5300 V ac - 320% 160 % 15µs
RS Stock No. 773-0152
Mfr. Part No.VO617A-2X017T
BrandVishay
SGD0.903
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. 145-1868
Mfr. Part No.H11A1
BrandVishay
SGD0.776
Each (In a Tube of 50)
units
Through Hole Phototransistor 1.5V 1 6 DIP DC 3µs 60 mA 5.3 kVrms - 50% - 3µs
RS Stock No. 699-8161
Mfr. Part No.CNY17-2
BrandVishay
SGD0.491
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. 815-2562
Mfr. Part No.H11A1
BrandVishay
SGD1.005
Each (In a Pack of 25)
units
Through Hole Phototransistor 1.5V 1 6 DIP DC 3µs 60 mA 5300 Vrms - 50% - 3µs
RS Stock No. 919-0109
Mfr. Part No.ILQ2
BrandVishay
SGD3.844
Each (In a Tube of 25)
units
Through Hole Transistor 1.65V 4 16 PDIP DC 2.6µs 60 mA 5300 V ac - 500% 100 % 2.2µs
RS Stock No. 165-2583
Mfr. Part No.SFH6106-4T
BrandVishay
SGD0.60
Each (On a Reel of 1000)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 4µs 60 mA 5.3 kVrms - 320% 160 % 15µs
RS Stock No. 708-5386
Mfr. Part No.ILQ2
BrandVishay
SGD4.336
Each (In a Pack of 5)
units
Through Hole Transistor 1.65V 4 16 PDIP DC 2.6µs 60 mA 5300 V ac - 500% 100 % 2.2µs