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庫存編號 170-0764
製造零件編號OPI 1264B
BrandOptek
HK$20.541
個 (以毎袋:25)
單位
Through Hole Transistor 1.6V 1 4 - DC - 40 mA 10 kV dc - - 50 % -
RS庫存編號 880-1968
製造零件編號OPI1264A
BrandOptek
HK$21.805
/個 (每包:2個)
單位
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 10 Vrms - Minimum of 25% - -
RS庫存編號 880-1965
製造零件編號OPI1280-026
BrandOptek
HK$51.32
單位
Through Hole NPN Phototransistor 2.3V - 4 - DC - - 15 kV - - - -
RS庫存編號 880-1952
製造零件編號OPI1264C
BrandOptek
HK$21.805
/個 (每包:2個)
單位
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 10 Vrms - Minimum of 100% - -
RS庫存編號 170-0941
製造零件編號OPI1264C
BrandOptek
HK$20.541
個 (以毎袋:25)
單位
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 15 kV dc Vrms - Minimum of 100% - -
RS庫存編號 908-7273
製造零件編號OPI1268
BrandOptek
HK$56.10
單位
Through Hole Transistor 1.6V 1 5 DIP DC - 50 mA 16 kV dc Yes - - -
RS庫存編號 170-0945
製造零件編號OPI1280-026
BrandOptek
HK$46.55
個 (以毎袋:100)
單位
Through Hole NPN Phototransistor 2.3V - 4 - DC - - 15 kV dc Vrms - - - -
RS庫存編號 170-0946
製造零件編號OPI1264A
BrandOptek
HK$20.541
個 (以毎袋:25)
單位
Through Hole NPN Phototransistor, Photosensor 1.6V - 4 - DC - 40 mA 15 kV dc Vrms - Minimum of 25% - -
RS庫存編號 880-1955
製造零件編號OPI120
BrandOptek
HK$76.06
單位
Through Hole Photodarlington, Photosensor, Phototransistor 1.5V - 5 - DC 2µs 150 mA 15 Vrms - 50% - 2µs
RS庫存編號 171-3892
製造零件編號OPI 1264B
BrandOptek
HK$21.81
單位
Through Hole Transistor 1.6V 1 4 - DC - 40 mA 10 kV dc - - 50 % -
RS庫存編號 170-0942
製造零件編號OPI120
BrandOptek
HK$76.07
個 (以毎袋:25)
單位
Through Hole Photodarlington, Photosensor, Phototransistor 1.5V - 5 - DC 2µs 150 mA 15 kV dc Vrms - 50% - 2µs