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. 166-2063
Mfr. Part No.FOD3182
MYR5.862
Each (In a Bag of 1000)
units
Through Hole MOSFET 1.8V 1 8 MDIP DC 38ns 25 mA 5 kVrms - - - 24ns
RS Stock No. 808-8733
Mfr. Part No.FOD3182
MYR6.825
Each (In a Pack of 2)
units
Through Hole MOSFET 1.8V 1 8 MDIP DC 38ns 25 mA 5000 Vrms - - - 24ns
RS Stock No. 178-4827
Mfr. Part No.H11L1M
MYR1.453
Each (In a Bag of 1000)
units
Through Hole Logic Gate 1.5V - 6 DIP DC 0.1µs 60 mA 7.5 kVrms Yes - - 0.1µs
RS Stock No. 671-1393
Mfr. Part No.H11L1M
MYR4.64
Each (In a Pack of 5)
units
Through Hole Logic Gate 1.5V - 6 DIP DC 0.1µs 60 mA 7.5 kVrms Yes - - 0.1µs
RS Stock No. 166-2219
Mfr. Part No.FOD8523SD
MYR1.711
Each (On a Reel of 1000)
units
Surface Mount Darlington 1.4V 1 4 MDIP DC 300µs 50 mA 5 kVrms - 15000% - 100µs
RS Stock No. 166-2230
Mfr. Part No.FOD8523S
MYR1.921
Each (In a Bag of 2000)
units
Surface Mount Darlington 1.4V 1 4 MDIP DC 300µs 50 mA 5 kVrms - 15000% - 100µs
RS Stock No. 903-4229
Mfr. Part No.FOD8523SD
MYR3.773
Each (In a Pack of 10)
units
Surface Mount Photodarlington 1.4V 1 4 PDIP DC 100µs - 5000 V ac Yes 15000% - 20µs
RS Stock No. 808-8840
Mfr. Part No.FOD8523S
MYR3.332
Each (In a Pack of 10)
units
Surface Mount Darlington 1.4V 1 4 MDIP DC 300µs 50 mA 5000 Vrms - 15000% - 100µs
RS Stock No. 671-1419
Mfr. Part No.HCPL2630
MYR11.18
Each
units
Through Hole Logic Gate 1.8V 1 8 DIP DC 50ns 50 mA 2.5 kVrms Yes - - 12ns
RS Stock No. 124-1738
Mfr. Part No.HCPL2630
MYR9.544
Each (In a Tube of 50)
units
Through Hole Logic Gate 1.8V 1 8 DIP DC 50ns 50 mA 2500 V ac Yes - - 12ns
RS Stock No. 145-4480
Mfr. Part No.HCPL0701
MYR6.821
Each (In a Tube of 50)
units
Surface Mount Darlington Photodetector 1.7V 1 8 SOIC DC - 20 mA 2.5 kVrms Yes 2600% - -
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. 166-1710
Mfr. Part No.6N137M
MYR2.035
Each (In a Bag of 1000)
units
Through Hole Logic Gate 1.8V 1 8 MDIP DC 30ns 50 mA 5 kVrms Yes - - 10ns
RS Stock No. 761-4536
Mfr. Part No.MOC207M
MYR2.342
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. 145-5525
Mfr. Part No.4N35M
MYR0.931
Each (In a Bag of 1000)
units
Through Hole Transistor 1.5V 1 6 PDIP DC - 60 mA 7.5 kVrms - - 100 % -
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. 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. 124-1743
Mfr. Part No.MOC207R2M
MYR0.997
Each (On a Reel of 2500)
units
Surface Mount Transistor 1.5V 1 8 SOIC DC 3.2µs 60 mA 2500 V ac - 200% 100 % 4.7µs
RS Stock No. 169-8586
Mfr. Part No.MOC207M
MYR1.157
Each (On a Reel of 3000)
units
Surface Mount Phototransistor 1.5V 1 8 SOIC DC 3.2µs 60 mA 2.5 kVrms - 200% 100 % 4.7µs
RS Stock No. 166-2137
Mfr. Part No.HCPL0701R2
MYR4.449
Each (On a Reel of 2500)
units
Surface Mount Darlington 1.7V 1 8 MDIP DC - 20 mA 2.5 kVrms Yes 5000% - -