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. 756-3707
Mfr. Part No.TLP759(D4-IGM,J,F)
BrandToshiba
MYR21.10
Each
units
Through Hole Transistor 1.85V 1 8 DIP DC - 25 mA 5000 V ac Yes 40% 20 % -
RS Stock No. 542-5943
Mfr. Part No.TLP550(F)
BrandToshiba
MYR15.508
Each (In a Pack of 5)
units
Through Hole Transistor 1.85V 1 8 PDIP DC - 25 mA 2.5 kVrms Yes 30% 10 % -
RS Stock No. 756-3494
Mfr. Part No.TLP531(GB,F)
BrandToshiba
MYR3.812
Each (In a Pack of 5)
units
Through Hole Phototransistor 1.3V 1 6 DIP DC 2µs 25 mA 2500 V ac - 600% 100 % 3µs
RS Stock No. 896-2546
Mfr. Part No.TLP250H(F)
BrandToshiba
MYR11.62
Each (In a Pack of 2)
units
Through Hole IC 1.8V 1 8 DIP DC 50ns 20 mA 5000 Vrms Yes - - 50ns
RS Stock No. 632-4857
Mfr. Part No.PS2502-4-A
MYR28.25
Each
units
Through Hole Darlington 1.4V 4 16 PDIP DC 100µs 80 mA 5000 Vrms - 2000% 200 % 100µs
RS Stock No. 168-6126
Mfr. Part No.PS2502-4-A
MYR19.453
Each (In a Tube of 20)
units
Through Hole Darlington 1.4V 4 16 PDIP DC 100µs 80 mA 5 kVrms - 2000% 200 % 100µs
RS Stock No. 145-2624
Mfr. Part No.ILQ615-4
BrandVishay
MYR11.298
Each (In a Tube of 25)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 4.6µs 60 mA 5.3 kVrms - 320% 160 % 15µs
RS Stock No. 708-5398
Mfr. Part No.ILQ615-4
BrandVishay
MYR13.272
Each (In a Pack of 5)
units
Through Hole Transistor 1.3V 4 16 PDIP DC 4.6µs 60 mA 5300 V ac - 320% 160 % 15µs
RS Stock No. 168-8528
Mfr. Part No.4N25
BrandIsocom
MYR2.473
Each (In a Tube of 65)
units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5.3 kVrms - - 20 % 2µs
RS Stock No. 919-0054
Mfr. Part No.4N25
BrandVishay
MYR1.848
Each (In a Tube of 50)
units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5000 V ac - 50% 20 % 2µs
RS Stock No. 830-5000
Mfr. Part No.ACPL-W346-000E
BrandBroadcom
MYR24.13
Each (In a Pack of 2)
units
Surface Mount SiC MOSFET Gate Drive 1.95V 1 6 SO6 - 30ns 25 mA 3750 Vrms Yes - - 30ns
RS Stock No. 597-289
Mfr. Part No.4N25
BrandIsocom
MYR3.22
Each
units
Through Hole Transistor 1.5V 1 6 PDIP DC 2µs 60 mA 5.3 kVrms - - 20 % 2µs
RS Stock No. 178-3251
Mfr. Part No.ACPL-W346-000E
BrandBroadcom
MYR13.923
Each (In a Tube of 100)
units
Surface Mount SiC MOSFET Gate Drive 1.95V 1 6 SO6 - 30ns 25 mA 3.75 kVrms Yes - - 30ns
RS Stock No. 808-8733
Mfr. Part No.FOD3182
Brandonsemi
MYR14.965
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. 922-4810
Mfr. Part No.HCPL-3120-000E
BrandBroadcom
MYR16.196
Each (In a Pack of 5)
units
- - 1.8V - - - - - 16 mA 3750 Vrms - - - -
RS Stock No. 166-2063
Mfr. Part No.FOD3182
Brandonsemi
MYR6.353
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
MYR13.325
Each (In a Tube of 50)
units
Surface Mount - 1.4V 1 8 - - 0.1µs 500 μA 3.75 kV - - - 0.1µs
RS Stock No. 145-1797
Mfr. Part No.VO2611
BrandVishay
MYR8.19
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. 708-5121
Mfr. Part No.VO2611
BrandVishay
MYR9.24
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. 796-5235
Mfr. Part No.TLP187
BrandToshiba
MYR2.562
Each (In a Pack of 25)
units
Surface Mount Darlington 1.4V 1 4 SOIC DC 40µs 150 mA 3750 Vrms - 4000% - 15µs