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. 696-1248
Mfr. Part No.HCNR200-000E
BrandBroadcom
MYR16.33
Each
units
Through Hole Photodiode 1.95V 1 8 PDIP-W DC - 25 mA 5000 V ac - - - -
RS Stock No. 760-3221
Mfr. Part No.TLP350(TP5,F)
BrandToshiba
MYR17.59
Each
units
Surface Mount IGBT Gate Drive, MOSFET 1.8V 2 8 PDIP DC 15ns 20 mA 3750 V ac - - - 8ns
RS Stock No. 178-3157
Mfr. Part No.HCPL-3150-000E
BrandBroadcom
MYR8.579
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
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. 799-5249
Mfr. Part No.TLP183(GB,E(T
BrandToshiba
MYR1.601
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO6 DC 2µs 50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 547-3891
Mfr. Part No.HCPL-3150-000E
BrandBroadcom
MYR11.78
Each
units
Through Hole Transistor 1.8V 1 8 DIP DC 0.1µs 16 mA 3.75 kVrms Yes - - 0.1µs
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. 553-591
Mfr. Part No.CNY173M
MYR1.901
Each (In a Pack of 10)
units
Through Hole Transistor 1.65V 1 6 PDIP DC - 60 mA 7.5 kVrms - 200% 100 % -
RS Stock No. 453-7499
Mfr. Part No.PS2501-1
MYR5.80
Each
units
Through Hole Transistor 1.4V 1 4 PDIP DC 3µs 80 mA 5000 Vrms - 600% 80 % 5µs
RS Stock No. 166-2125
Mfr. Part No.HCPL3700
MYR8.381
Each (In a Bag of 1000)
units
Surface Mount Photodarlington 0.65V 1 8 PDIP AC, DC 45µs 4.4 mA 2.5 kVrms - - - 0.5µs
RS Stock No. 170-2388
Mfr. Part No.PC457L0NIP0F
BrandSharp
MYR3.812
Each (On a Reel of 3000)
units
Surface Mount Transistor 1.95V 1 5 Mini-Flat DC - 25 mA 3.75 kVrms - 50% 19 % -
RS Stock No. 896-2489
Mfr. Part No.TLP183(GB,E(T
BrandToshiba
MYR0.896
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO6 DC 2µs 50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 903-4282
Mfr. Part No.HCPL3700
MYR17.43
Each (In a Pack of 5)
units
Surface Mount Photodarlington 0.65V 1 8 PDIP AC, DC 45µs 4.4 mA - - - - 0.5µs
RS Stock No. 761-4536
Mfr. Part No.MOC207M
MYR2.086
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.5V 1 8 SOIC DC 3.2µs 60 mA 2500 V ac - 200% 100 % 4.7µs
RS Stock No. 885-1171
Mfr. Part No.TLP2395(E(T
BrandToshiba
MYR5.085
Each (In a Pack of 10)
units
Surface Mount Photo IC 1.63V 1 5 SO6 - 15ns ±20 mA 3750 Vrms Yes - - 12ns
RS Stock No. 903-4263
Mfr. Part No.HCPL0701
MYR7.722
Each (In a Pack of 5)
units
Surface Mount Darlington Photodetector 1.7V 1 8 SOIC DC - 20 mA 2500 Vrms Yes 2600% - -
RS Stock No. 453-1643
Mfr. Part No.4N25X
BrandIsocom
MYR1.926
Each (In a Pack of 10)
units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5.3 kVrms - - 20 % 2µs
RS Stock No. 691-2088
Mfr. Part No.LTV-357T
BrandLite-On
MYR0.982
Each (In a Pack of 10)
units
Surface Mount Transistor 1.4V 1 4 Mini-Flat DC 4µs 50 mA 5 kVrms - 600% 50 % 3µs
RS Stock No. 896-2555
Mfr. Part No.TLP291(Y,SE(T
BrandToshiba
MYR0.658
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SOIC DC 4µs 50 mA 3.75 kVrms - 400% - 7µs
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 % -