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. 896-2559
Mfr. Part No.TLP3110(F)
BrandToshiba
SGD3.38
Each (In a Pack of 2)
units
Surface Mount MOSFET 1.4V 1 4 SOP AC - 50 mA 1.5 kVrms - - - -
RS Stock No. 760-3249
Mfr. Part No.TLP558(F)
BrandToshiba
SGD6.01
Each
units
Through Hole Logic Gate 1.7V 1 8 DIP DC 75ns 10 mA 2500 V ac Yes - - 75ns
RS Stock No. 716-0613
Mfr. Part No.ACNW3190-000E
BrandBroadcom
SGD8.19
Each
units
Through Hole - 1.95V 1 8 PDIP-W DC 0.1µs 25 mA 5000 V ac Yes - - 0.1µs
RS Stock No. 450-751
Mfr. Part No.HCNW3120-000E
BrandBroadcom
SGD4.98
Each
units
Through Hole Transistor 1.95V - 8 DIP DC 0.1µs 16 mA 5 kVrms Yes - - 0.1µs
RS Stock No. 168-9677
Mfr. Part No.LTV-846
BrandLite-On
SGD1.00
Each (In a Tube of 25)
units
Through Hole Transistor 1.4V 4 16 PDIP DC 4µs 50 mA 5 kVrms - 600% 50 % 3µs
RS Stock No. 708-5386
Mfr. Part No.ILQ2
BrandVishay
SGD4.136
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
RS Stock No. 178-3163
Mfr. Part No.ACPL-4800-000E
BrandBroadcom
SGD3.16
Each (In a Tube of 50)
units
Through Hole - 1.85V 1 8 DIP DC 16ns 10 mA 3.75 kVrms Yes - - 20ns
RS Stock No. 922-5615
Mfr. Part No.HCNW3120-000E
BrandBroadcom
SGD4.151
Each (In a Tube of 42)
units
Through Hole Transistor 1.95V - 8 DIP DC 0.1µs 16 mA 5000 V ac Yes - - 0.1µs
RS Stock No. 885-1358
Mfr. Part No.TLP762JF(D4,F)
BrandToshiba
SGD1.296
Each (In a Pack of 10)
units
Through Hole Phototriac - 1 5 DIP - - 10 mA 4000 Vrms - - - -
RS Stock No. 168-7809
Mfr. Part No.TLP184
BrandToshiba
SGD0.376
Each (In a Tube of 125)
units
Surface Mount Phototransistor 1.4V 1 5 SOIC AC 5µs 10 mA 3.75 kVrms - 400% - 9µs
RS Stock No. 169-6162
Mfr. Part No.VO617A-2X017T
BrandVishay
SGD0.173
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. 453-7499
Mfr. Part No.PS2501-1
SGD1.48
Each
units
Through Hole Transistor 1.4V 1 4 PDIP DC 3µs 80 mA 5000 Vrms - 600% 80 % 5µs
RS Stock No. 168-7830
Mfr. Part No.TLP293(E
BrandToshiba
SGD0.277
Each (On a Tape of 175)
units
Surface Mount Transistor 1.4V 1 4 SOIC DC 2µs 50 mA 3.75 kVrms - 600% - 3µs
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. 178-7522
Mfr. Part No.4N35SM
SGD0.35
Each (In a Bag of 1000)
units
Surface Mount Phototransistor 1.5V 1 6 DIP DC 2µs 3 A 7.5 kVrms Yes 100% - 2µs
RS Stock No. 761-3580
Mfr. Part No.4N25SR2M
SGD0.758
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.5V 1 6 DIP DC - 60 mA 7500 V ac - 20% - -
RS Stock No. 815-1030
Mfr. Part No.6N136
BrandVishay
SGD1.822
Each (In a Pack of 10)
units
Through Hole Transistor 1.9V 1 8 DIP DC - 25 mA 5300 Vrms - 35% - -
RS Stock No. 281-5422
Mfr. Part No.HCPL-7860-000E
BrandBroadcom
SGD9.08
Each
units
Through Hole Transistor 0.2V - 8 DIP DC - 15 mA 3.75 kVrms Yes - - -
RS Stock No. 907-4918
Mfr. Part No.PVI5050NPBF
BrandInfineon
SGD9.33
Each (In a Pack of 5)
units
Through Hole - - - - DIP - - - - - - - -
RS Stock No. 840-0026
Mfr. Part No.HCPL-4701-300E
BrandBroadcom
SGD4.704
Each (In a Pack of 5)
units
Through Hole Open Collector 1.5V 1 8 DIP DC - 230 mA 3750 Vrms Yes 25000% - -