Optocouplers of 2025
Best Choice1
Clicked 2 times in the last monthEC BuyingEC Buying 5Pcs 3-5V Optocoupler Isolation Board Optoelectronic Isolator EL817 PC817 Card Rail Bracket Input 3-5 V Optocoupler Isolation Module 1 Channel Opto PNP NPN Signal Converter
Main highlights- The card guide rail bracket input 3-5V, the optoelectronic isolator provides a reliable and versatile solution for signal isolation and conversion, ensuring seamless integration and operation in various electronic systems
- PC817 Card Rail Bracket Input 3-5V Optocoupler Isolation Module with maximum output current 50MA, designed for input current within 15-20MA and maximum application signal frequency of 5KHz, ensuring efficient signal conversion and transmission
- Optocoupler featuring operating current> 1 MA, suitable for a wide range of input and output signal voltage, and provides optimal signal transmission and conversion for electronic devices and circuits
- Opto-isolator with isolation voltage greater than 3000V, offers maximum input current of 50MA and working temperature range of -55~110 degrees, ensuring reliable and safe signal isolation and conversion in diverse environments
- 1-way optocoupler isolation module with EL817 features, providing input voltage of DC 3V ~ 5V and output voltage suitable for DC1.8V-24V, ensuring broad voltage application and optimal signal conversion for various devices
9.9Exceptional
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Value for Money2
IS5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz
Main highlights- 【Signal Voltage】Positive phase amplification with high-level trigger. Output equals input.
- 【Relay Switch Module】5pcs 1-channel photocoupler isolator with stable performance, triggered by DC 12V and 1mA current.
- 【Level Converter】Opto-isolators can be used as level converters (NPN-PNP, PNP-NPN), signal input to MCU in isolation, or MCU-controlled device output in isolation.
- 【Functional Application】Devices for microprocessor Input/Output switching, DC/AC power control, communications equipment protection, and power supply regulation.
- 【Control Transformer】Optocoupler isolation board provide isolation between low and high-voltage circuits when used with other electronic devices.
9.7Exceptional
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3
BOJACKBOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)
Why we love it
Compact and easy to store.
Versatile applications across devices.
Durable packaging ensures protection.
9.5Excellent
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4
CHANZONChanzon 50pcs PC817 Optocoupler PC817C DIP Installation DIP-4 50%-600% Transfer Ratio 4pin Optocouple Compatible with EL817C/LTV817C/FL817C/el817 Optical Isolator
Main highlights- Used for: Opto isolator breakout circuit board, breadboard,arduino DIY, coupler replacement.
- Spec: 1-channel type, Transfer Ratio CTR Min.CTR 50% Max 600% (IF = 5mA, V = 5V),Isoration Voltage: 5000Vrms, Please see pic3-pic5 for detail parameters.
- Package quantity: 50 pieces, packed in a durable and resealable plastic bag.
- Number of Pins: 4 pin(dip-4), Through Hole
- Compatible with: EL817C/LTV817C/FL817C Optocouplers
9.3Excellent
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5
Shutao3PCS PC817 4 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Driver Photoelectric Isolated Module
Main highlights- PC817 module jumper cap can achieve output port is high potential or pull down output
- Onboard 4 channel 817 are independent: can achieve different voltage control at then same time
- If it is a pulse signal, please note that the limit of 817 is below 3KHZ. If the control signal is greater than 3KHZ, please do not use this module, it will not work properly.
- 4-way 817 optocoupler driving port signal voltage:3.3-24V; Output voltage range: 3.6-30V(The output current depends on the specific situation but not over 10MA. When the total power is fixed, the voltage and current are inversely proportional)
- 4 way 817 optocoupler to achieve the control signal and the control signal isolation, you can directly use the microcontroller or other devices IO port to achieve voltage isolation control, you can achieve a small voltage control, the control side can be an external transistor MOS tube or different voltage levels Of the device interface
9.1Excellent
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6
AlinanAlinan 4pcs 4CH Optocoupler PC817 4 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module
Main highlights- ★Through the jumper cap can achieve whether the output is high potential output or low output.The 4th and 817 on the board are independent, which can realize simultaneous control of different voltages, etc.
- ★Photoelectric isolation has strong anti-interference ability. Can drive big behindPower triodes, MOS tubes, etc., where high voltage driving is required, can also directly drive low power 24V relays.
- ★If it is a pulse signal, please note that the limit of 817 is below 4KHZ. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.
- ★Driving Port Signal Voltage: 3.6-24V; Output Port Voltage Port: 3.6-30V
- ★Can realize 3.3V or 5V to control the interface of 3.6-30V voltage . After the control terminal is turned on, the controlled terminal will also be turned on.
9.0Excellent
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7
EC BuyingEC Buying 5Pcs 24V Optocoupler Isolation Board Optoelectronic Isolator EL817 PC817 Card Rail Bracket Input 3-5 V Optocoupler Isolation Module 1 Channel Opto PNP NPN Signal Converter
Main highlights- Optoelectronic isolator with 3-5 V input and EL817 optocoupler, delivering an outstanding isolation voltage exceeding 3000V and a maximum output current of 50MA. Suitable for opto PNP NPN signal conversion and various optoelectronic isolation requirements, compatible with input 24V signals
- Optocoupler isolation module with PC817 card rail bracket, offering an impressive isolation voltage of over 3000V and a maximum output current of 50MA. Suitable for various optoelectronic isolation and signal conversion needs, with a working temperature range of -55~110 degrees. Input 24V
- Optocoupler isolation board designed for opto PNP NPN signal conversion, featuring an input signal voltage of DC 24V and a wide output signal voltage range compatible with DC1.8V-24V. Equipped with EL817 optocoupler and PC817 card rail bracket for reliable performance in signal conversion and isolation applications. Compatible with input 24V
- 24V optocoupler isolation board with EL817 features, providing a wide input signal voltage range of DC1.8V-24V and a maximum input current of 50MA. Ideal for 1 channel opto PNP NPN signal conversion and optoelectronic isolation applications. Input 24V compatible
- 1 channal optocoupler isolation module for signal conversion and isolation, featuring a wide input signal voltage range of DC1.8V-24V and a maximum output current of 50MA. The optocoupler isolation module is designed for compatibility with input 24V signals and offers reliable performance in diverse applications
8.9Very Good
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8
AOICRIEAOICRIE 8pcs PC817 2 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module
Main highlights- PC817 module jumper cap can be used to determine whether the output terminal is high potential output or low output.
- PC817 2 channel optocoupler isolation board is independent, can control different voltage at then same time.
- If it is a pulse signal, please note that the limit of 817 is below 3KHZ. If the control signal is greater than 3KHZ, please do not use this module, it will not work properly.
- 2-way 817 optocoupler driving port signal voltage:3.6-24V; Output voltage range: 3.6-30V(The output current depends on the specific situation but not over 10MA. When the total power is fixed, the voltage and current are inversely proportional).
- 2 way 817 optocoupler to achieve the control signal and the control signal isolation, you can directly use the microcontroller or other devices IO port to achieve voltage isolation control, you can achieve a small voltage control, the control side can be an external transistor MOS tube or different voltage levels Of the device interface.
8.8Very Good
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9
HiLetgoHiLetgo 3pcs TLP281 Optocoupler Isolation Board Optical Coupler Isolation Module 4 Channel Optical Coupler Isolation Module High/Low Level Expansion Board
Main highlights- TLP281 4 Channel Optical Coupler Isolation Module
- PCB Size: 25mm x 26mm
- Connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system
- A normal LED opto-isolator will invert the logic of a signal
- A higher voltage than the TTL logic on the (3.3V or 5V) micro
8.7Very Good
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10
AOICRIEAOICRIE 6pcs PC817 1 Channel Optocoupler Isolation Module 1CH Optocoupler PC817 3-5V 12V 24V Photoelectric Isolator PNP NPN Signal Converter Rail Holder PLC Drive Motor Board
Main highlights- The 1-way optocoupler isolation module is suitable for isolation when the output level of the single-chip microcomputer is used to drive inductive components such as motors, and anti-interference protects some circuits of the single-chip microcomputer.
- Photoelectric isolator rail holder PLC drive motor board output level of the single-chip microcomputer is low, and the driving voltage of the driven module is high for level matching.
- PC817 1 channel way optocoupler isolation board are good as the level converter(NPN-PNP, PNP-NPN), and can also be used to input a signal to MCU in isolation or MCU control another device in isolation.
- 1-way 817 optocoupler drive terminal input signal voltage: DC 3V-5V/12V/24V (optional); Output signal voltage: wide voltage suitable for DC1.8V-24V.
- 1-Channel PC817 optocoupler isolation module adopts 5.0 pitch screw terminals for convenient wiring.
8.6Very Good
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