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. 919-0124
Mfr. Part No.ILQ621
BrandVishay
€2.253
Each (In a Tube of 25)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 2.8µs 60 mA 5300 V ac - 600% 50 % 11µs
RS Stock No. 165-6303
Mfr. Part No.VOS615A-2X001T
BrandVishay
€0.183
Each (On a Reel of 3000)
units
Surface Mount Phototransistor 1.5V 1 4 SSOP DC 3µs 50 mA 3.75 kVrms - 125% - 3µs
RS Stock No. 168-9676
Mfr. Part No.LTV-844
BrandLite-On
€0.819
Each (In a Tube of 25)
units
Through Hole Transistor 1.4V 4 16 PDIP AC 4µs 50 mA 5 kVrms - 300% 20 % 3µs
RS Stock No. 166-1948
Mfr. Part No.4N33SR2M
€0.216
Each (On a Reel of 1000)
units
Surface Mount Darlington 1.5V 1 6 DIP - 5µs 3 A 1.5 kVrms Yes 500% - 100µs
RS Stock No. 710-4875
Mfr. Part No.IL217AT
BrandVishay
€0.69
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.5V 1 8 SOIC DC - 60 mA 4000 V ac - 130% 100 % -
RS Stock No. 919-0105
Mfr. Part No.ILQ1
BrandVishay
€1.638
Each (In a Tube of 25)
units
Through Hole Transistor 1.65V 4 16 PDIP DC 1.9µs 60 mA 5300 V ac - 300% 20 % 1.4µs
RS Stock No. 166-2131
Mfr. Part No.TIL117M
€0.183
Each (In a Bag of 1000)
units
Through Hole Phototransistor 1.4V 1 6 MDIP DC 2µs 3 A 7.5 kVrms - 50% - 2µs
RS Stock No. 913-4818
Mfr. Part No.PVT322ASPBF
BrandInfineon
€4.847
Each (In a Tube of 50)
units
Surface Mount MOSFET - 2 8 SOIC - 3ms 25 mA 4000 Vrms - - - 0.5ms
RS Stock No. 773-3693
Mfr. Part No.VO615A-5
BrandVishay
€0.528
Each (In a Bag of 5)
units
Through Hole Phototransistor 1.6V 1 4 DIP DC 3µs 60 mA 5000 Vrms - 150% - 4.7µs
RS Stock No. 168-9677
Mfr. Part No.LTV-846
BrandLite-On
€0.593
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. 818-4538
Mfr. Part No.VOS615A-2X001T
BrandVishay
€0.453
Each (In a Pack of 20)
units
Surface Mount Phototransistor 1.5V 1 4 SSOP DC 3µs 50 mA 3750 Vrms - 125% - 3µs
RS Stock No. 178-3226
Mfr. Part No.HCPL-0601
BrandBroadcom
€0.932
Each (In a Tube of 100)
units
Surface Mount Transistor 1.75V 1 8 SOIC DC 24ns 20 mA 3.75 kVrms Yes - - 10ns
RS Stock No. 170-0942
Mfr. Part No.OPI120
BrandOptek
€10.23
Each (In a Bag of 25)
units
Through Hole Photodarlington, Photosensor, Phototransistor 1.5V - 5 - DC 2µs 150 mA 15 kV dc Vrms - 50% - 2µs
RS Stock No. 691-2230
Mfr. Part No.LTV-846S
BrandLite-On
€0.68
Each (In a Pack of 2)
units
Surface Mount Transistor 1.4V 4 16 PDIP DC 4µs 50 mA 5 kVrms - 600% 50 % 3µs
RS Stock No. 903-4217
Mfr. Part No.FOD817C3SD
€0.083
Each (In a Pack of 50)
units
Surface Mount Phototransistor 1.4V 1 4 PDIP AC 4µs - 5000 V ac Yes 600% - 3µs
RS Stock No. 773-3729
Mfr. Part No.VOM452T
BrandVishay
€0.265
Each (In a Bag of 2)
units
Surface Mount Phototransistor 1.8V 1 5 SOP DC 5ns 25 mA 3750 Vrms Yes 50% - -
RS Stock No. 168-7808
Mfr. Part No.TLP175A
BrandToshiba
€0.587
Each (In a Tube of 125)
units
Surface Mount MOSFET 1.4V 1 4 SOIC AC 1ms 80 mA 3.75 kVrms - - - 1ms
RS Stock No. 806-5951
Mfr. Part No.MOC3011SM
€0.178
Each (In a Pack of 25)
units
Surface Mount Phototriac 1.5V 1 6 DIP AC - 60 mA 5300 Vrms Yes - - -
RS Stock No. 178-4828
Mfr. Part No.MCT6
€0.236
Each (In a Bag of 1000)
units
Through Hole Transistor 1.5V 2 8 PDIP DC - 60 mA 5 kVrms - - 20 % -
RS Stock No. 547-3807
Mfr. Part No.HCNW137-000E
BrandBroadcom
€0.85
Each
units
Through Hole IC 1.75V 1 8 DIP DC 24ns 20 mA 3.75 kVrms Yes - - 10ns
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