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An optocoupler IC, 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 IC 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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Optocouplers, Arduino Optocoupler Circuits | RS

Optocouplers

Buy from our selection of optocouplers from Broadcom. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Broadcom Optocouplers | RS

Buy from our selection of optocouplers from Onsemi. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Onsemi Optocouplers | RS

Buy from our selection of Optocouplers from Sharp. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Sharp Optocouplers | RS

Buy from our selection of Optocouplers from Toshiba. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Toshiba Optocouplers | RS

RS offers 4N25 optocouplers for precise signal isolation. Shop now for reliable performance in electronic circuits.

4N25 Optocouplers | RS

The 4N25 is a popular type of optocoupler, also known as an opto-isolator. It's an industry-standard single channel device with a phototransistor output and base connection. The 4N25 optocoupler is suitable for various applications due to its high isolation voltage, decent current transfer ratio, and faster response time.The 4N25 optocoupler is an indispensable tool for any electronics designer seeking reliable isolation and robust signal transmission. Its versatility, industry-standard design, and exceptional performance make it a perfect choice for a vast array of applications.

Discover high-performance 4N35 optocouplers at RS. Achieve reliable signal isolation in electronic circuits. Shop now for precision components.

4N35 Optocouplers | RS

The 4N35 is a common type of optocoupler that empowers you to create dependable and secure electronic designs. Its robust isolation, efficient signal transmission, and industry-standard design make it a compelling choice for a wide range of applications.

Explore HCPL optocouplers at RS. Achieve precision signal isolation in electronic circuits. Shop now for reliable performance.

HCPL Optocouplers | RS

HCPL optocouplers, also known as opto-isolators, are electronic components that use light to transmit a signal between two electrically isolated circuits. This isolation provides several benefits, including:<ul><li>Safety - it prevents high voltage from reaching low-voltage components, improving safety and circuit protection.</li><li>Noise Reduction - it eliminates electrical noise that can interfere with signal transmission.</li><li>Ground Loop Prevention - it prevents ground loops, which can cause voltage spikes and erratic circuit behavior.</li></ul><h2>Benefits of HCPL Optocouplers:</h2><ul><li>Wide Range of Options - varying isolation voltages, current transfer ratios (CTR), and package styles to suit diverse project needs.</li><li>High-Speed Solutions - some HCPL optocouplers are designed for high-speed applications, enabling faster switching frequencies for real-time signal transmission.</li><li>Renowned Quality - HCPL optocouplers are known for their exceptional reliability and long-lasting performance.</li></ul>

Find ACFL optocouplers at RS. Ensure fast, accurate signal isolation in electronics. Shop now for high-performance components.

ACFL Optocouplers | RS

ACFL optocouplers from Broadcom boast impressive isolation voltage ratings, ranging from hundreds to thousands of volts depending on the specific model. This safeguards your low-voltage circuits from the perils of high voltage, enhancing overall safety in your designs.These range of optocouplers are renowned for their exceptional quality and reliability. You can be confident that these components will deliver long-lasting performance in your projects.Broadcom's comprehensive ACFL optocoupler selection empowers you to find the perfect solution for your project. Carefully consider factors like:<ul><li>Required Isolation Voltage</li><li>Needed Current Transfer Ratio (CTR)</li><li>Desired Data Rate (for high-speed applications)</li><li>Preferred Package Style</li><li>Special Functionalities (e.g., bi-directional communication)</li></ul>

Discover ACPL optocouplers at RS. Ensure high-speed signal isolation in electronics. Shop now for reliable performance components.

ACPL Optocouplers | RS

ACPL (Analog CMOS Photonic Link) optocouplers are a specific series of optically coupled isolation devices developed by Broadcom. These optocouplers utilise a combination of photonic and CMOS technology to provide high-performance analogue signal isolation.Applications of ACPL optocouplers include high-speed data communication, precision instrumentation, medical equipment, industrial automation, and power electronics, among others. Their combination of high-speed performance, low power consumption, and reliable isolation makes them suitable for a wide range of demanding applications where accuracy, efficiency, and safety are critical.

Explore MOC optocouplers at RS. Achieve reliable signal isolation in electronics. Shop now for precision components.

MOC Optocouplers | RS

In the world of electronics, ensuring safety and maintaining electrical isolation between circuits is paramount. MOC optocouplers, a prominent family from various manufacturers, offer a powerful solution, enabling flawless signal transmission while keeping circuits separate.MOC optocouplers employ the principle of light for achieving isolation. They typically house a light-emitting diode (LED) on one side and a photosensitive device like a phototransistor or phototriac on the other, all within a compact package. When current flows through the LED, it emits light. This light travels across a small gap and is detected by the photodetector on the other side.&nbsp;The MOC optocoupler family offers a diverse selection with varying isolation voltages, current transfer ratios (CTR), output configurations (phototransistor, phototriac), and package styles to perfectly suit your project requirements.<h2>Advantages of MOC Optocouplers:</h2><ul><li>Enhanced Safety - superior isolation safeguards low-voltage circuits from high voltage, preventing potential damage and promoting overall design safety.</li><li>Noise Reduction - effectively eliminate electrical noise that can disrupt signal transmission, ensuring clear and accurate communication.</li><li>Ground Loop Prevention - prevent ground loops, which can cause voltage spikes and erratic circuit behaviour, leading to malfunctions.</li><li>Driving Power Loads - certain MOC optocouplers, particularly those with phototriac outputs, are ideal for directly driving power loads like relays and motors, eliminating the need for additional driver circuits.</li></ul>

Find MOSFET output optocouplers at RS. Ensure efficient signal isolation in electronics. Shop now for reliable performance components.

MOSFET Output Optocouplers | RS

MOSFET output optocouplers, also known as optically coupled MOSFETs (OCMOSFETs), are a type of optocoupler that utilises a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) as the output device instead of a traditional phototransistor.<h2>Benefits of MOSFET Output Optocouplers:</h2><ul><li>Higher Output Current - enables them to drive larger loads such as relays, motors, and solenoid valves directly, eliminating the need for additional driver transistors.</li><li>AC/DC Compatibility</li><li>Faster Switching Speeds - MOSFETs can potentially offer faster switching speeds compared to phototransistors, which can be beneficial in high-frequency applications.</li></ul>In summary, MOSFET output optocouplers offer a compelling option when you need an optocoupler to handle higher currents, control AC signals, or achieve faster switching speeds. They are particularly valuable in applications involving driving power loads and high-frequency signal transmission.

Discover MOCD optocouplers at RS. Achieve precise signal isolation in electronics. Shop now for reliable performance components.

MOCD Optocouplers | RS

MOCD optocouplers are designed to handle significant currents while maintaining exceptional electrical isolation. They typically house a light-emitting diode (LED) on one side and a powerful output device, like a phototriac, on the other, all within a compact package.With a diverse range of MOCD optocouplers available, consider these factors for optimal selection:<ul><li>Required Peak Output Current - choose an optocoupler that can handle the maximum current your load will draw.</li><li>Input/Output Voltage Requirements - ensure compatibility between your control circuit voltage and the optocoupler's input/output voltage ratings.</li><li>Select an MOCD optocoupler suitable for your application's AC or DC needs.</li><li>Package Style - choose a package that best suits your space constraints and PCB layout.</li></ul>

Explore PC400 optocouplers at RS. Ensure accurate signal isolation in electronics. Shop now for reliable performance components.

PC400 Optocouplers | RS

The PC400 is a specific model of optocoupler manufactured by Sharp Electronics. It's a compact, surface-mount type optocoupler that utilises light-based isolation to transmit signals between electrically separate circuits.

Find TCMT optocouplers at RS. Achieve reliable signal isolation in electronics. Shop now for precision components.

TCMT Optocouplers | RS

TCMT optocouplers are a family of optocouplers manufactured by Vishay. They utilise light-based isolation to transmit signals between electrically separate circuits, offering several benefits like safety and noise reduction.TCMT optocouplers come in various DIP (dual in-line package) configurations, with the most common being the 6-pin single channel and the 16-pin quad channel (four channels in one package) variants.

Discover ACNW optocouplers at RS. Ensure high-precision signal isolation in electronics. Shop now for reliable performance components.

ACNW Optocouplers | RS

ACNW (Analog CMOS Isolation Amplifier Optocoupler) is a series of optocouplers developed by Broadcom that integrates an isolation amplifier with a high-speed CMOS (Complementary Metal-Oxide-Semiconductor) optocoupler. These devices are designed to provide high-precision analogue signal isolation and amplification in a single package.These optocouplers provide high-linearity amplification of analogue signals across a wide bandwidth, ensuring accurate reproduction of the input signal. ACNW optocouplers are capable of high-speed operation, making them suitable for applications requiring rapid data transmission and precise timing. They also offer high input-to-output isolation voltage, ensuring robust protection against voltage transients and electrical noise. Other features include low power consumption, often exhibit good temperature stability and are available in compact package options, enabling easy integration into space-constrained designs.Applications of ACNW optocouplers include precision instrumentation, industrial process control, medical equipment, power electronics, and data communication systems, among others. Their integration of isolation and amplification functions, along with high-speed performance and reliable isolation, makes them suitable for applications requiring accurate signal transmission and isolation in demanding environments.

Explore 6N137 optocouplers at RS. Achieve fast and reliable signal isolation in electronics. Shop now for precision components.

6N137 Optocouplers | RS

The 6N137 is a popular optocoupler, also known as an opto-isolator, manufactured by several companies. It's a widely used component that provides electrical isolation while transmitting digital signals between circuits using light.This optocoupler offers high isolation voltage, typically around 3750Vrms, making it suitable for safety-conscious applications. If you're looking for a reliable, cost-effective and easy-to-use optocoupler for your project, the 6N137 is a great choice.

Discover 6N138 optocouplers at RS. Achieve fast and reliable signal isolation in electronics. Shop now for precision components.

6N138 Optocouplers | RS

The 6N138 is an optocoupler, also known as an opto-isolator, which is a component used in electronic circuits to transfer electrical signals between two isolated circuits by using light. It consists of an infrared LED (light-emitting diode) on one side and a photodetector (such as a photodiode or phototransistor) on the other side, separated by a transparent barrier to ensure electrical isolation.The 6N138 optocoupler is specifically designed for high-speed applications and is commonly used in various industrial, automotive, and communication systems where electrical isolation is necessary to prevent interference or to ensure safety. It provides reliable signal isolation and can handle relatively high data rates compared to some other optocoupler models.

Browse our selection of 6N136 optocouplers at RS. Achieve fast and reliable signal isolation in electronics. Shop now for precision components.

6N136 Optocouplers | RS

Engineered for industrial and electronic environments, the 6N136 Optocoupler stands as a pinnacle of precision and reliability in signal isolation technology. Designed to bridge the gap between two electrically isolated circuits, the 6N136 ensures uncompromised signal integrity while safeguarding against electrical interference and voltage fluctuations.With its high-speed capabilities and robust construction, this optocoupler excels in applications where stringent performance metrics are non-negotiable. From industrial automation and automotive systems to telecommunications and medical devices, the 6N136 sets the benchmark for signal isolation solutions across diverse sectors.

Find 6N139 optocouplers at RS. Achieve fast and reliable signal isolation in electronics. Shop now for precision components.

6N139 Optocouplers | RS

Step into a realm of unparalleled precision and reliability with the 6N139 Optocoupler, a cornerstone of advanced signal isolation technology. Meticulously engineered to bridge the gap between two electrically isolated circuits, the 6N139 ensures uncompromised signal integrity while providing robust protection against electrical interference and voltage fluctuations.The 6N139 embodies a fusion of cutting-edge components and stringent engineering standards, delivering exceptional performance tailored to the demands of high-performance applications. From industrial automation and telecommunications to aerospace and medical instrumentation, the 6N139 sets the gold standard for signal isolation solutions across diverse industries.

Explore 6N135 optocouplers at RS. Achieve fast and reliable signal isolation in electronics. Shop now for precision components.

6N135 Optocouplers | RS

The 6N135 optocoupler facilitates electrical isolation between two circuits using light. Specifically, the 6N135 is optimised for high-speed applications, making it suitable for systems requiring rapid signal transmission.Like other optocouplers, the 6N135 comprises an infrared LED (Light Emitting Diode) on one side and a photodetector on the other side, with a transparent barrier separating them. This design ensures that electrical signals can be transferred between the input and output circuits without direct electrical contact, thus providing isolation to protect sensitive components and prevent interference.The 6N135 is commonly used in various industrial, automotive, and communication systems where high-speed signal isolation is crucial for maintaining system performance and reliability. Its robust design and high-speed capabilities make it well-suited for applications such as motor control, data communication, and digital signal isolation in harsh environments.

Find IL300 optocouplers at RS. Ensure precise linear signal isolation in electronics. Shop now for reliable performance components.

IL300 Optocouplers | RS

The IL300 is a high-performance analogue optocoupler, also known as an opto-isolator, designed for precision linear signal isolation. It consists of an LED (Light Emitting Diode) input optically coupled to a photodiode array or a photovoltaic detector array. This arrangement enables the IL300 to provide electrical isolation between input and output circuits while maintaining accurate linear signal transfer.Applications of the IL300 include isolated analogue signal transmission in instrumentation, industrial control systems, power electronics, and telecommunications equipment where accurate signal isolation and high-speed performance are essential.Overall, the IL300 offers designers a reliable solution for achieving precise linear signal isolation in a wide range of applications, ensuring robust performance and system integrity.

6N138

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