Best Optocouplers of 2025

BOJACK PC817 OPTOCOUPLER DIP is a pack of 50 pieces of 4-pin DIP-4 with a needle distance of 2.54mm. The photocoupler output type is phototransistor, and it is commonly used in household appliances, computer terminals, photocopiers, SCR system equipment, and measuring instruments. The product comes in a durable and resealable plastic storage box.

This pack of 20 Major Brands 4N35 Optocouplers features 1 channel, 6 pins, 1.5 volts, and 200Mw power. These Optocouplers are great for use in a variety of applications where electrical isolation is necessary due to the 100% transfer ratio. They are categorized as Optocouplers.

The NOYITO Optocoupler Module is designed to provide reliable signal isolation, making it an essential tool for your electronic projects. With 5.0 pitch screw terminals, you can easily connect your devices without hassle. This module helps protect your microcontroller by isolating it from high-voltage signals, ensuring safe operation. Additionally, it amplifies weak output currents, allowing you to drive more demanding circuits effortlessly. Whether you're working with 3-5V, 12V, or 24V signals, this module offers versatile voltage handling to meet your needs.

The ALLECIN PC817 Optocoupler is a versatile component ideal for various electronic projects. With its four pins and a 2.54mm pitch, it makes connections straightforward, allowing you to focus on your experiments. The high isolation voltage between the input and output ensures safety and reliability, which is crucial when working with sensitive electronics. Its double transfer mold packaging provides durability, protecting the internal components during use. This optocoupler is perfect for applications like computer terminals, measuring instruments, and household appliances, making it a valuable addition to your toolkit.

The HiLetgo Optocoupler Module is a versatile 4-channel isolation board designed to connect low-voltage digital systems, such as a 5V microcontroller, to higher voltage or noisy environments. With a compact PCB size of 25mm x 26mm, it easily fits into various projects. This module effectively handles higher voltage levels than standard TTL logic, ensuring your sensitive components remain safe. Additionally, it features a normal LED opto-isolator that inverts signal logic, providing flexibility in circuit design. Overall, this module simplifies interfacing between different voltage systems, enhancing the reliability of your electronic projects.

The Shutao PC817 Optocoupler offers a versatile solution for voltage control, featuring four independent channels that allow you to manage different voltage levels simultaneously. With a signal voltage range of 3.3-24V and an output range of 3.6-30V, this module is adaptable to various applications. You can easily achieve signal isolation by connecting microcontrollers or other devices, ensuring safe operation. Additionally, the module includes a jumper cap to select between high potential or pull-down output, providing flexibility in your setup. However, keep in mind that pulse signals should not exceed 3KHZ for optimal performance.

The Gikfun OPTOCOUPLER DIP-4 PC817C PC817 comes in a pack of 20 and has four pins with a 2.54mm pin pitch. Its optical transistor output type makes it useful for a variety of applications such as computer terminals, registers, and measuring instruments.

The DONGKER Optocoupler Board is a versatile voltage converter adapter module that offers optocoupler isolation control and 8-channel input and output. With NPN / PNP signal output capability, this module supports DC 3.3V5V input and can handle a load voltage range of DC 1.8V-24V. The optocoupler isolation control ensures electrical isolation between the input and output, providing added protection to your circuit. The 8-channel input and output allow for easy integration with multiple devices, making it suitable for various applications. The NPN / PNP signal output offers flexibility in signal compatibility, allowing you to connect to different types of devices. With support for DC 3.3V5V input, this module is compatible with a wide range of power sources. The DC 1.8V-24V load voltage capability makes it suitable for different load requirements. The DONGKER Optocoupler Board is a reliable and convenient solution for voltage conversion and signal control in your projects.

The Lite On Optocoupler is a 4-channel DC input and DC output device that offers a voltage of 5000V. With a unit count of 10.0, this optocoupler is perfect for various applications. Its compact size and lightweight design make it easy to install and use. The package weight of the product is only 0.022 kilograms, ensuring convenience during transportation. Additionally, the package dimensions of 10.16 H x 2.54 L x 5.08 W (centimeters) make it suitable for space-restricted environments. The Lite On Optocoupler provides reliable electrical isolation between input and output, making it ideal for preventing noise interference and voltage spikes. With its high voltage capability, this optocoupler ensures safe and efficient performance in a range of electronic systems.

Bridgold PC817 is a package of 50 optocouplers with 4 pins, dual-row, and 2.54mm pitch. These optocouplers are widely used in computer terminals and have an international standard supply voltage. They are made of plastic and metal, with a size of 8 x 4 x 7mm.