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. 799-5292
Mfr. Part No.TLP240A(F(O
BrandToshiba
SGD1.865
Each (In a Pack of 2)
units
Through Hole MOSFET 1.4V 1 4 DIP AC - 30 mA 5000 Vrms - - - -
RS Stock No. 896-2527
Mfr. Part No.TLP240A(F(O
BrandToshiba
SGD3.295
Each (In a Pack of 2)
units
Through Hole MOSFET 1.4V 1 4 DIP AC - 30 mA 5000 Vrms - - - -
RS Stock No. 625-7909
Mfr. Part No.6N137(F)
BrandToshiba
SGD2.04
Each
units
Through Hole Transistor 1.75V 1 8 DIP DC 30ns 20 mA 2.5 kVrms Yes 1000% 1000 % 30ns
RS Stock No. 625-8772
Mfr. Part No.TLP523-4(F)
BrandToshiba
SGD5.55
Each
units
Through Hole Darlington 1.3V 4 16 PDIP DC - 50 mA 2.5 kVrms - 2000% 1000 % -
RS Stock No. 885-1196
Mfr. Part No.TLP2161(F)
BrandToshiba
SGD2.208
Each (In a Pack of 5)
units
Surface Mount Photo IC 1.65V 2 8 SOIC - 3ns 2 mA 2.5 kVrms Yes - - 3ns
RS Stock No. 885-1358
Mfr. Part No.TLP762JF(D4,F)
BrandToshiba
SGD0.916
Each (In a Pack of 10)
units
Through Hole Phototriac - 1 5 DIP - - 10 mA 4000 Vrms - - - -
RS Stock No. 885-1027
Mfr. Part No.TLP293(E(T
BrandToshiba
SGD0.434
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO4 DC 2µs 50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 756-3707
Mfr. Part No.TLP759(D4-IGM,J,F)
BrandToshiba
SGD4.15
Each
units
Through Hole Transistor 1.85V 1 8 DIP DC - 25 mA 5000 V ac Yes 40% 20 % -
RS Stock No. 760-3249
Mfr. Part No.TLP558(F)
BrandToshiba
SGD7.51
Each
units
Through Hole Logic Gate 1.7V 1 8 DIP DC 75ns 10 mA 2500 V ac Yes - - 75ns
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. 796-5308
Mfr. Part No.TLP293(E
BrandToshiba
SGD0.233
Each (In a Pack of 25)
units
Surface Mount Transistor 1.4V 1 4 SOIC DC 2µs 50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 168-7809
Mfr. Part No.TLP184
BrandToshiba
SGD0.302
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. 796-5216
Mfr. Part No.TLP184
BrandToshiba
SGD0.219
Each (In a Pack of 20)
units
Surface Mount Phototransistor 1.4V 1 5 SOIC AC 5µs 10 mA 3750 Vrms - 400% - 9µs
RS Stock No. 168-7436
Mfr. Part No.TLP762JF(D4,F)
BrandToshiba
SGD1.437
Each (In a Tube of 50)
units
Through Hole Triac - 1 5 DIP - - 10 mA 4 kVrms - - - -
RS Stock No. 168-7830
Mfr. Part No.TLP293(E
BrandToshiba
SGD0.281
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. 760-3261
Mfr. Part No.TLP762JF(D4,F)
BrandToshiba
SGD1.726
Each (In a Pack of 10)
units
Through Hole Triac - 1 5 DIP - - 10 mA 4000 V ac - - - -
RS Stock No. 168-7431
Mfr. Part No.TLP558(F)
BrandToshiba
SGD4.234
Each (In a Tube of 50)
units
Through Hole Logic Gate 1.7V 1 8 DIP DC 75ns 10 mA 2.5 kVrms Yes - - 75ns
RS Stock No. 885-1092
Mfr. Part No.TLP184(SE(T
BrandToshiba
SGD0.297
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO6 AC, DC 5µs 20 mA 3750 Vrms - 400% - 9µs
RS Stock No. 542-6047
Mfr. Part No.TLP227G(F)
BrandToshiba
SGD2.694
Each (In a Pack of 5)
units
Through Hole MOSFET - 1 4 PDIP DC - 50 mA 2.5 kVrms - - - -
RS Stock No. 896-2561
Mfr. Part No.TLP4227G-2(F)
BrandToshiba
SGD2.965
Each (In a Pack of 2)
units
Through Hole MOSFET 1.3V 2 8 DIP AC - 50 mA 5000 Vrms - - - -