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. 146-1427
Mfr. Part No.VOM160NT
BrandVishay
HK$2.36
Each (On a Reel of 2000)
units
Surface Mount Phototriac 1.5V 1 4 SOP DC - 60 mA 3.75 kVrms - - - -
RS Stock No. 168-7924
Mfr. Part No.PC357N3J000F
BrandSharp
HK$1.127
Each (On a Reel of 3000)
units
- - 1.4V - - - - - 50 mA 3.75 kVrms - - - -
RS Stock No. 864-9136
Mfr. Part No.FOD3180TV
HK$14.386
Each (In a Pack of 5)
units
Through Hole MOSFET Gate Driver 1.8V 1 8 DIP - 75ns 25 mA 5000 Vrms - - - 55ns
RS Stock No. 145-2644
Mfr. Part No.SFH615A-4X018T
BrandVishay
HK$2.463
Each (On a Reel of 1000)
units
Surface Mount Phototransistor 1.65V 1 4 PDIP DC 4µs 60 mA 5.3 kVrms - 320% 160 % 15µs
RS Stock No. 186-022
Mfr. Part No.TLP350(F)
BrandToshiba
HK$17.135
Each (In a Pack of 2)
units
Through Hole IGBT Gate Drive, MOSFET - 1 8 PDIP DC - - 3.75 kVrms Yes - - -
RS Stock No. 710-5064
Mfr. Part No.SFH615A-4X018T
BrandVishay
HK$3.266
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 PDIP DC 4µs 60 mA 5300 V ac - 320% 160 % 15µs
RS Stock No. 165-2649
Mfr. Part No.VOD213T
BrandVishay
HK$3.01
Each (On a Reel of 2000)
units
Surface Mount Phototransistor 1.55V 2 8 SOIC DC 5µs 30 mA 4 kVrms - - 100 % 4µs
RS Stock No. 165-2647
Mfr. Part No.VOD205T
BrandVishay
HK$2.834
Each (On a Reel of 2000)
units
Surface Mount Transistor 1.55V 2 8 SOIC DC 5µs 30 mA 4 kVrms - 80% 40 % 4µs
RS Stock No. 145-1761
Mfr. Part No.CNY74-2H
BrandVishay
HK$3.767
Each (In a Tube of 50)
units
Through Hole Transistor 1.6V 2 8 PDIP DC 3µs 60 mA 5.3 kVrms - 600% 50 % 4.7µs
RS Stock No. 885-0967
Mfr. Part No.TLP291(V4GBTP,SE(T
BrandToshiba
HK$1.556
Each (In a Pack of 50)
units
Surface Mount Phototransistor 1.4V 1 4 SO4 DC 4µs 50 mA 3750 Vrms - 400% - 7µs
RS Stock No. 699-8464
Mfr. Part No.VOD205T
BrandVishay
HK$3.83
Each (In a Pack of 10)
units
Surface Mount Transistor 1.55V 2 8 SOIC DC 5µs 30 mA 4000 V ac - 80% 40 % 4µs
RS Stock No. 168-7424
Mfr. Part No.TLP350(TP5,F)
BrandToshiba
HK$18.672
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. 699-8219
Mfr. Part No.SFH6156-1T
BrandVishay
HK$2.416
Each (In a Pack of 10)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 2µs 60 mA 5300 V ac - 80% 40 % 11µs
RS Stock No. 185-962
Mfr. Part No.TLP190B(U,C,F)
BrandToshiba
HK$15.23
Each (In a Pack of 2)
units
Surface Mount Diode 1.7V 1 4 SOP DC - 50 mA 2.5 kVrms Yes - 8888 -
RS Stock No. 919-0786
Mfr. Part No.VO2630-X007T
BrandVishay
HK$9.659
Each (On a Reel of 1000)
units
Surface Mount Transistor 1.7V 2 8 PDIP DC 0.023µs - 5300 V ac Yes - - 0.007µs
RS Stock No. 173-8176
Mfr. Part No.AQV252
BrandPanasonic
HK$40.39
Each (In a Tube of 50)
units
Through Hole MOSFET - - 6 DIP DC - 50 mA 1.5 kVrms - - - -
RS Stock No. 110-185
Mfr. Part No.SFH615A-2
BrandVishay
HK$5.82
Each
units
Through Hole Transistor 1.65V 1 4 PDIP DC 3µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 796-5317
Mfr. Part No.TLP785F(GR-LF7,F(C
BrandToshiba
HK$1.087
Each (In a Pack of 25)
units
Surface Mount Transistor 1.3V 1 4 DIP DC 2µs 10 mA 5000 Vrms - 300% - 3µs
RS Stock No. 671-1419
Mfr. Part No.HCPL2630
HK$16.95
Each
units
Through Hole Logic Gate 1.8V 1 8 DIP DC 50ns 50 mA 2.5 kVrms Yes - - 12ns
RS Stock No. 710-3989
Mfr. Part No.VO2630-X007T
BrandVishay
HK$10.992
Each (In a Pack of 5)
units
Surface Mount Transistor 1.7V 2 8 SMD DC 0.023µs - 5.3 kVrms Yes - - 0.007µs