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. 922-4810
Mfr. Part No.HCPL-3120-000E
BrandBroadcom
MYR12.59
Each (In a Pack of 5)
units
- - 1.8V - - - - - 16 mA 3750 Vrms - - - -
RS Stock No. 166-2063
Mfr. Part No.FOD3182
MYR4.639
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. 178-3205
Mfr. Part No.HCPL-3120-000E
BrandBroadcom
MYR8.446
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 145-1797
Mfr. Part No.VO2611
BrandVishay
MYR6.83
Each (In a Tube of 50)
units
Surface Mount Phototransistor 1.7V 1 8 DIP DC 23ns 15 mA 5.3 kVrms Yes - - 7ns
RS Stock No. 885-1143
Mfr. Part No.TLP187(E(T
BrandToshiba
MYR1.95
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO6 DC 40µs 50 mA 3750 Vrms - 4000% - 15µs
RS Stock No. 708-5121
Mfr. Part No.VO2611
BrandVishay
MYR7.472
Each (In a Pack of 5)
units
Surface Mount Phototransistor 1.7V 1 8 DIP DC 23ns 15 mA 5300 V ac Yes - - 7ns
RS Stock No. 168-7813
Mfr. Part No.TLP187
BrandToshiba
MYR1.388
Each (In a Tube of 125)
units
Surface Mount Darlington 1.4V 1 4 SOIC DC 40µs 150 mA 3.75 kVrms - 4000% - 15µs
RS Stock No. 796-5235
Mfr. Part No.TLP187
BrandToshiba
MYR1.764
Each (In a Pack of 25)
units
Surface Mount Darlington 1.4V 1 4 SOIC DC 40µs 150 mA 3750 Vrms - 4000% - 15µs
RS Stock No. 756-3491
Mfr. Part No.TLP531(BL,F)
BrandToshiba
MYR3.804
Each (In a Pack of 5)
units
Through Hole Phototransistor 1.3V 1 6 DIP DC 2µs 25 mA 2500 V ac - 600% 200 % 3µs
RS Stock No. 178-1571
Mfr. Part No.ACPL-247-500E
BrandBroadcom
MYR3.431
Each (On a Reel of 2000)
units
- - - - - - - - - - - - - -
RS Stock No. 693-6807
Mfr. Part No.ACPL-247-500E
BrandBroadcom
MYR7.086
Each (In a Pack of 5)
units
Surface Mount Transistor 1.4V 4 16 SOIC DC 2µs 50 mA 3 kVrms - 600% 100 % 3µs
RS Stock No. 691-2072
Mfr. Part No.LTV-354T
BrandLite-On
MYR1.208
Each (In a Pack of 10)
units
Surface Mount Transistor 1.4V 1 4 Mini-Flat AC 4µs 50 mA 5 kVrms - 400% 20 % 3µs
RS Stock No. 168-9656
Mfr. Part No.LTV-354T
BrandLite-On
MYR0.656
Each (On a Reel of 3000)
units
Surface Mount Transistor 1.4V 1 4 Mini-Flat AC 4µs 50 mA 5 kVrms - 400% 20 % 3µs
RS Stock No. 922-6696
Mfr. Part No.CNY17-3-000E
BrandBroadcom
MYR1.254
Each (In a Tube of 65)
units
Through Hole Transistor 1.7V 1 6 PDIP DC 5µs 60 mA 5000 V ac - 200% 100 % 5µs
RS Stock No. 178-3149
Mfr. Part No.HCPL-7860-000E
BrandBroadcom
MYR22.124
Each (In a Tube of 50)
units
Through Hole Transistor 0.2V - 8 DIP DC - 15 mA 3.75 kVrms Yes - - -
RS Stock No. 281-5422
Mfr. Part No.HCPL-7860-000E
BrandBroadcom
MYR37.64
Each
units
Through Hole Transistor 0.2V - 8 DIP DC - 15 mA 3.75 kVrms Yes - - -
RS Stock No. 547-4197
Mfr. Part No.HCPL-7800-000E
BrandBroadcom
MYR39.38
Each
units
Through Hole Transistor - 1 8 PDIP - 4.3µs - 3.75 kVrms Yes - - -
RS Stock No. 922-5860
Mfr. Part No.HCPL-7800-000E
BrandBroadcom
MYR32.945
Each (In a Tube of 50)
units
Through Hole Transistor - 1 8 PDIP - 4.3µs - 3750 V ac Yes - - -
RS Stock No. 756-3545
Mfr. Part No.TLP559(IGM,F)
BrandToshiba
MYR16.82
Each
units
Through Hole Phototransistor 1.85V 1 8 DIP DC - 25 mA 2500 V ac Yes 75% 25 % -
RS Stock No. 696-1263
Mfr. Part No.CNY17-3-000E
BrandBroadcom
MYR2.34
Each (In a Pack of 5)
units
Through Hole Transistor 1.7V 1 6 PDIP DC 5µs 60 mA 5000 V ac - 200% 100 % 5µs