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. 171-7948
Mfr. Part No.MOC3031G
BrandIsocom
€0.331
Each (In a Tube of 65)
units
- - - - - - - - - - - - - -
RS Stock No. 110-208
Mfr. Part No.ILQ615-2
BrandVishay
€3.05
Each
units
Through Hole Transistor 1.3V 4 16 PDIP DC 2.8µs 60 mA 5.3 kVrms - 125% 63 % 14µs
RS Stock No. 180-8803
Mfr. Part No.LH1501BAB
BrandVishay
€2.702
Each (In a Pack of 5)
units
- - - - - - - - - - - - - -
RS Stock No. 169-6094
Mfr. Part No.SFH6106-4X001T
BrandVishay
€0.211
Each (On a Reel of 1000)
units
Surface Mount Phototransistor 1.65V 1 4 SMD DC 4µs 60 mA 5.3 kVrms - 320% 160 % 15µs
RS Stock No. 169-8707
Mfr. Part No.4N35TVM
€0.132
Each (In a Bag of 1000)
units
Through Hole Transistor 1.5V 1 6 DIP DC 2µs 3 A 7.5 kVrms Yes 100% - 2µs
RS Stock No. 808-8792
Mfr. Part No.FOD817B
€0.248
Each (In a Pack of 25)
units
Through Hole Transistor 1.4V 1 4 MDIP DC 18µs 50 mA 5000 Vrms - 260% - 18µs
RS Stock No. 903-4267
Mfr. Part No.HCPL2531S
€1.798
Each (In a Pack of 5)
units
Surface Mount Phototransistor 1.7V 2 8 DIP DC - 50 mA 2500 Vrms Yes 50% - -
RS Stock No. 168-8543
Mfr. Part No.ISD5X
BrandIsocom
€0.554
Each (In a Tube of 50)
units
Through Hole Phototransistor 1.65V 2 8 PDIP DC 2.6µs 50 mA 5.3 kVrms - 400% 50 % 2.2µs
RS Stock No. 761-3394
Mfr. Part No.MOC3083SR2M
€0.776
Each (In a Pack of 5)
units
Surface Mount Phototriac 1.5V 1 6 DIP DC - 60 mA 7500 V ac - - - -
RS Stock No. 161-1112
Mfr. Part No.TIL199
BrandIsocom
€1.705
Each (In a Tube of 25)
units
Through Hole - 1.4V 4 16 - AC 100µs 50 mA 5300 (Minimum) Vrms - 7500% 500% 100µs
RS Stock No. 450-913
Mfr. Part No.HCPL-4200-300E
BrandBroadcom
€6.25
Each
units
Surface Mount Logic Gate 20V - 8 DIP - 0.055µs 30 mA 3750 Vrms - - - 0.015µs
RS Stock No. 806-6058
Mfr. Part No.MOC3061SM
€0.744
Each (In a Pack of 10)
units
Surface Mount Phototriac 1.5V 1 6 DIP AC - 60 mA 7500 V Yes - - -
RS Stock No. 173-6569
Mfr. Part No.ISP817BXSM
BrandIsocom
€0.266
Each (In a Tube of 100)
units
Surface Mount NPN Phototransistor 1.4V 1 4 DIP - 4µs 50 mA 5300 (Minimum) Vrms - 260% 130% 3µs
RS Stock No. 691-2120
Mfr. Part No.LTV-817A
BrandLite-On
€0.21
Each (In a Pack of 10)
units
Through Hole Transistor 1.4V 1 4 PDIP DC 4µs 50 mA 5 kVrms - 160% 80 % 3µs
RS Stock No. 161-1170
Mfr. Part No.SFH618A-3XSMT&R
BrandIsocom
€0.168
Each (In a Pack of 20)
units
Surface Mount NPN Phototransistor 1.5V 1 4 SMD DC 4µs 50 mA 5300 (Minimum) Vrms - 200% 100% 3µs
RS Stock No. 165-2938
Mfr. Part No.VOM617A-4X001T
BrandVishay
€0.182
Each (On a Reel of 3000)
units
Surface Mount Phototransistor 1.6V 1 4 SOP DC 7µs 60 mA 3.75 kVrms - 320% - 12µs
RS Stock No. 171-8072
Mfr. Part No.TLP621GBSM
BrandIsocom
€0.15
Each (In a Tube of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 885-1061
Mfr. Part No.TLP188(E(T
BrandToshiba
€0.367
Each (In a Pack of 25)
units
Surface Mount Phototransistor 1.4V 1 4 SO6 DC 2µs 50 mA 3750 Vrms - 600% - 3µs
RS Stock No. 734-4950
Mfr. Part No.ACPL-W454-000E
BrandBroadcom
€2.18
Each
units
Surface Mount Phototransistor 1.8V 1 6 SO DC - 25 mA 5000 V ac - 65% 25 % -
RS Stock No. 161-1110
Mfr. Part No.TIL197B
BrandIsocom
€0.176
Each (In a Tube of 100)
units
Through Hole - 1.4V 1 4 - AC 100µs 50 mA 5300 (Minimum) Vrms - 7500% 1500% 100µs
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