Best Optocouplers of 2025

The RUNCCI-YUN PC817 Couplers are essential components for your electronic projects. Each unit is a photo coupler, which allows you to isolate different parts of your circuit, enhancing safety and performance. Crafted from durable plastic and metal, these couplers offer longevity and reliability. With a compact size of 8 x 4 x 7mm, they are perfect for tight spaces. Weighing just 3g, they are easy to handle and integrate into various applications, making them ideal for use with Arduino and similar platforms.

The BOJACK PC817 Optocoupler is designed with a phototransistor output type, providing reliable signal transmission. With four pins and a needle distance of 2.54mm, it ensures easy integration into various electronic projects. This product comes in a convenient pack of 100 pieces, all stored in a durable resealable plastic box, making organisation and access simple. You will find this photocoupler ideal for applications such as computer terminals and household appliances, enhancing functionality in your devices.

The JZK PC817C Optocouplers are industry-standard components that make your projects straightforward and efficient. They are perfect for use on matrix, strip, or breadboards, ensuring versatility in your designs. Made from high-quality PC material, these lightweight optocouplers boast strong impact resistance, which enhances their durability. With a wide operating temperature range, you can rely on them for consistent performance in various environments. Overall, these features make the JZK PC817C an excellent choice for reliable signal transmission while increasing safety and simplifying your circuit designs.

The DONGKER Optocoupler Module offers optocoupler isolation control, ensuring that your signals remain stable and secure. With 8-channel input and output, you can easily manage multiple signals at once, making it ideal for complex setups. It supports both NPN and PNP signal outputs, providing flexibility for low and high-level signals. Additionally, it accommodates a range of input voltages from DC 3.3V to 5V, allowing you to use it in various applications with ease.

The DollaTek Optocoupler Module is a 1-channel AC 220V device designed specifically for testing and detecting applications. Its high-quality construction ensures reliability, as each unit is tested before shipping. You can easily verify the output TTL level using a microcontroller unit (MCU) with a power supply requirement of just 3-5V. Additionally, this module is compatible with PIC, requiring only 5mA current for external logic circuits, making it a user-friendly option for various electronic projects.

The AILOVA Isolated Module is a versatile device ideal for signal isolation and voltage conversion. With a conversion frequency of 80KHZ, it ensures quick and reliable signal processing, which is particularly useful in various applications. The compact size of 725518mm makes it easy to integrate into your projects without taking up too much space. Additionally, the mounting hole size of 64*47mm allows for straightforward installation, providing convenience for users who may not have extensive technical expertise.

The Hailege ADUM1201 Isolator offers a dual channel digital magnetic isolation solution that significantly reduces power consumption, making it ten times more efficient than traditional optical isolators. With a minimum operating current of just 0.8mA, you can save on energy costs while maintaining performance. Its superior timing accuracy and transient common mode rejection ensure reliable data transmission, which is crucial for effective communication. Additionally, the compact design occupies only 40% of the PCB area compared to conventional isolators, providing convenience in space-limited applications.

The DONGKER Optocoupler Module is a versatile tool for signal isolation and level conversion. It allows you to easily convert PLC signal levels, making it ideal for both PNP and NPN signals. You'll find that each channel features an indicator, providing clear visibility of its operational status. With a conversion frequency of 80kHz, this module ensures efficient performance, helping you maintain effective communication in your electronic projects.

The Youmile PC817 Boards are designed for versatile voltage control, accommodating driving port signals ranging from 3.3 to 24V while offering an output voltage range of 3.6 to 30V. This flexibility ensures that you can tailor the output to your specific needs without exceeding 10MA. The jumper cap feature allows you to set the output port as either high or low potential, enhancing usability. Additionally, with independent channels, you can manage different voltage controls simultaneously, making it a practical choice for complex projects.

The EC Buying Optocoupler Module is designed to facilitate effective signal conversion and isolation. With a wide input voltage range of DC1.8V-24V and a maximum input current of 50mA, you can easily integrate it into various systems. It boasts an impressive isolation voltage exceeding 3000V, ensuring your circuits remain protected. Additionally, the module operates efficiently within a temperature range of -55 to 110 degrees, making it suitable for diverse environments. This versatility allows you to tackle multiple optoelectronic isolation applications with confidence.