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. 918-9840
Mfr. Part No.IL420
BrandVishay
$3.748
Each (In a Tube of 50)
units
Through Hole Triac - 1 6 PDIP - - 60 mA 5300 V ac - - - -
RS Stock No. 178-3146
Mfr. Part No.HCPL-3140-000E
BrandBroadcom
$2.596
Each (In a Tube of 50)
units
Through Hole Transistor 1.8V - 8 DIP DC 50ns 12 mA 3.75 kVrms Yes - - 50ns
RS Stock No. 547-3712
Mfr. Part No.HCPL-4503-000E
BrandBroadcom
$3.30
Each
units
Through Hole Transistor 1.7V 1 8 PDIP DC - 25 mA 3.75 kVrms Yes 50% 19 % -
RS Stock No. 178-3154
Mfr. Part No.HCPL-4503-000E
BrandBroadcom
$2.387
Each (In a Tube of 50)
units
Through Hole Transistor 1.7V 1 8 PDIP DC - 25 mA 3.75 kVrms Yes 50% 19 % -
RS Stock No. 111-166
Mfr. Part No.H11G1
BrandIsocom
$1.17
Each
units
Through Hole Darlington 1.5V 1 6 DIP DC 100µs 50 mA 5.3 kVrms - - 1000 % 20µs
RS Stock No. 803-0759
Mfr. Part No.ACPL-M484-000E
BrandBroadcom
$5.57
Each (In a Pack of 4)
units
Surface Mount Transistor 1.85V 1 5 SOIC DC 6ns 10 mA 3750 Vrms Yes - - 6ns
RS Stock No. 178-3156
Mfr. Part No.HCPL-2531-000E
BrandBroadcom
$3.278
Each (In a Tube of 50)
units
Through Hole Transistor 1.7V 2 8 PDIP DC - 25 mA 5 kVrms Yes 50% 19 % -
RS Stock No. 165-2474
Mfr. Part No.SFH620A-2
BrandVishay
$0.593
Each (In a Tube of 100)
units
Through Hole Transistor 1.65V 1 4 PDIP AC 2µs 60 mA 5.3 kVrms - 200% 63 % 2µs
RS Stock No. 922-5775
Mfr. Part No.HCPL-2601-000E
BrandBroadcom
$2.126
Each (In a Tube of 50)
units
Through Hole Transistor 1.75V 1 8 DIP DC 24ns 20 mA 3750 V ac Yes - - 10ns
RS Stock No. 178-4756
Mfr. Part No.MOC3041M
$0.966
Each (In a Tube of 50)
units
Through Hole Triac 1.5V 1 6 DIP DC - 60 mA 7.5 kVrms Yes - - -
RS Stock No. 796-5257
Mfr. Part No.TLP290(GB
BrandToshiba
$0.682
Each (In a Pack of 20)
units
Surface Mount Transistor 1.4V 1 4 SOIC AC 4µs 50 mA 3750 Vrms - 400% - 7µs
RS Stock No. 186-022
Mfr. Part No.TLP350(F)
BrandToshiba
$3.955
Each (In a Pack of 2)
units
Through Hole IGBT Gate Drive, MOSFET - 1 8 PDIP DC - - 3.75 kVrms Yes - - -
RS Stock No. 166-2775
Mfr. Part No.4N32M
$0.391
Each (In a Bag of 1000)
units
Through Hole Phototransistor 1.5V 1 6 DIP DC - 80 mA 7.5 kVrms Yes - 500 % -
RS Stock No. 166-2364
Mfr. Part No.H11G1M
$0.567
Each (In a Bag of 1000)
units
Through Hole Photodarlington 1.5V 1 6 MDIP DC 5µs 60 mA 7.5 kVrms - 1000% - 100µs
RS Stock No. 373-1202
Mfr. Part No.AQY274
BrandPanasonic
$18.55
Each
units
Through Hole MOSFET 1.5V - 4 DIP DC - 50 mA 2.5 kVrms - - - -
RS Stock No. 922-6872
Mfr. Part No.ACPL-M484-000E
BrandBroadcom
$2.811
Each (In a Tube of 100)
units
Surface Mount Transistor 1.85V 1 5 SOIC DC 6ns 10 mA 3750 Vrms Yes - - 6ns
RS Stock No. 145-1701
Mfr. Part No.6N135
BrandVishay
$0.913
Each (In a Tube of 50)
units
Through Hole Phototransistor 1.9V 1 8 DIP DC - 25 mA 5.3 kVrms - 16% - -
RS Stock No. 168-7424
Mfr. Part No.TLP350(TP5,F)
BrandToshiba
$3.868
Each (In a Tube of 50)
units
Surface Mount IGBT Gate Drive, MOSFET 1.8V 2 8 PDIP DC 15ns 20 mA 3.75 kVrms - - - 8ns
RS Stock No. 178-3151
Mfr. Part No.HCPL-3020
BrandBroadcom
$2.662
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 922-5804
Mfr. Part No.HCPL-2630-000E
BrandBroadcom
$4.579
Each (In a Tube of 50)
units
Through Hole Transistor 1.75V 2 8 DIP DC 24ns 20 mA 3750 V ac Yes - - 10ns
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