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. 453-7499
Mfr. Part No.PS2501-1
HK$5.40
Each
units
Through Hole Transistor 1.4V 1 4 PDIP DC 3µs 80 mA 5000 Vrms - 600% 80 % 5µs
RS Stock No. 196-3298
Mfr. Part No.RV1S9213ACCSP-10YC#SC0
HK$16.13
Each (In a Pack of 5)
units
Surface Mount - 1.75V 1 5 - DC - 20 mA 5 kVrms - - - -
RS Stock No. 186-4365
Mfr. Part No.PS8352AL2-AX
HK$43.37
Each
units
Surface Mount - 5.5V 1 8 DIP - 3.1µs 16 mA 5 kVrms - - - 3.1µs
RS Stock No. 196-3302
Mfr. Part No.RV1S2281ACCSP-10YC#SC0
HK$4.80
Each (On a Tape of 20)
units
Surface Mount - 1.4V 1 4 - DC 4µs 30 mA 5 kVrms - 400% 50% 5µs
RS Stock No. 196-3308
Mfr. Part No.RV1S2211ACCSP-10YC#SC0
HK$4.80
Each (In a Pack of 25)
units
Surface Mount - 1.4V 1 4 - DC 4µs 30 mA 5 kVrms - 400% 100% 5µs
RS Stock No. 186-4340
Mfr. Part No.PS9313L-V-AX
HK$21.185
Each (In a Pack of 2)
units
Surface Mount Photodiode 1.9V 1 6 DIP - 460ns 10 mA 5 kVrms - - 44% 240ns
RS Stock No. 196-3293
Mfr. Part No.RV1S9260ACCSP-10YC#SC0
HK$17.273
Each (On a Tape of 20)
units
Surface Mount - 1.7V 1 5 - DC 5µs 20 mA 5 kVrms Yes - - 5ns
RS Stock No. 196-3313
Mfr. Part No.RV1S2285ACCSP-10YV#SC0
HK$11.547
Each (On a Tape of 20)
units
Surface Mount - 1.4V 1 4 - DC 4µs 30 mA 5 kVrms - 400% 50% 5µs
RS Stock No. 186-4283
Mfr. Part No.PS9513L3-V-AX
HK$22.695
Each (In a Pack of 2)
units
Surface Mount Photodiode 2.1V 1 8 DIP - 520ns 10 mA 5 kVrms - - 44% 250ns
RS Stock No. 186-4369
Mfr. Part No.PS9123-AX
HK$34.905
Each (In a Pack of 2)
units
Surface Mount Photodiode 1.8V 1 5 SOP - 32ns 10 mA 3.75 kVrms - - - 28ns
RS Stock No. 186-4409
Mfr. Part No.PS9317L-AX
HK$41.85
Each (In a Pack of 2)
units
Surface Mount Photodiode 1.9V 1 6 DIP - 35ns 10 mA 5 kVrms - - - 40ns
RS Stock No. 181-6769
Mfr. Part No.PS8502L1-AX
HK$13.838
Each (In a Pack of 5)
units
Surface Mount Photodiode 2.2V 1 8 DIP - 0.8µs 25 mA 5 kVrms - - 15% 0.8µs
RS Stock No. 196-3300
Mfr. Part No.RV1S9213ACCSP-10YV#SC0
HK$14.544
Each (On a Tape of 20)
units
Surface Mount - 1.75V 1 5 - DC - 20 mA 5 kVrms - - - -
RS Stock No. 196-3311
Mfr. Part No.RV1S2285ACCSP-10YC#SC0
HK$11.279
Each (On a Tape of 20)
units
Surface Mount - 1.4V 1 4 - DC 4µs 30 mA 5 kVrms - 400% 50% 5µs
RS Stock No. 181-6766
Mfr. Part No.PS8501L1-AX
HK$13.838
Each (In a Pack of 5)
units
Surface Mount Photodiode 2.2V 1 8 DIP - 0.8µs 25 mA 5 kVrms - - 15% 0.8µs
RS Stock No. 181-6758
Mfr. Part No.PS9531-AX
HK$20.538
Each (On a Reel of 50)
units
Surface Mount Photodiode 1.75V 1 8 DIP - 40ns 25 mA 5 kVrms - - - 40ns
RS Stock No. 186-4478
Mfr. Part No.PS9924-Y-V-AX
HK$39.63
Each
units
Surface Mount Photodiode 1.8V 1 8 DIP - 20ns 10 mA 7.5 kVrms - - - 5ns
RS Stock No. 186-4389
Mfr. Part No.PS8502L2-AX
HK$27.235
Each (In a Pack of 2)
units
Surface Mount Photodiode 2.2V 1 8 DIP - 0.35µs 16 mA 5 kVrms - - 15% 0.22µs
RS Stock No. 203-5532
Mfr. Part No.RV1S9353ACCSP-120C#SC0
HK$56.05
Each
units
- Transistor 5.5V - 8 - DC - - - - - - -
RS Stock No. 186-4448
Mfr. Part No.PS2913-1-AX
HK$18.602
Each (In a Pack of 5)
units
Surface Mount Phototransistor 1.3V 1 4 - DC 10µs 1 mA 2.5 kVrms - 200% 50% 10µs