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The Best Optocouplers

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Discover now our comparison of the best Optocouplers. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Optocouplers are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Optocouplers in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1
BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)
  • Photocoupler output type: phototransistor
  • Number of pins: 4
  • Needle distance: 2.54mm
  • Package quantity: 50 pieces, packed in a durable and resealable plastic storage box.
  • Application: PC817 photocoupler is widely used in computer terminals, SCR system equipment, measuring instruments, photocopiers, automatic ticketing, household appliances
No. 2
NOYITO 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (3-5V)
  • NOYITO 1-Channel PC817 Optocoupler Isolation module adopts 5.0 pitch screw terminals for easy wiring . The module can play the role of isolation when the output level of the single-chip microcomputer drives the inductive devices such as motors and motors, and protect part of the circuit of the single-chip microcomputer against interference
  • The module can be used for high-voltage detection. For example, if the output signal level of a sensor is 12V, and the voltage of the microcontroller is 5V, this module can be used for isolation detection.
  • The module can also be used for current amplification. For example, when the output current of the microcontroller is too small to drive certain circuits, this module can be used for amplification.
  • Input signal voltage: 3-5V / 12V / 24V (optional).
  • Output signal voltage: wide voltage, suitable for DC1.8 - 24V.
SaleNo. 3
5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz
  • 【Relay Switch Module】5pcs 1-channel photocoupler isolator with stable performance, triggered by DC 12V and 1mA current.
  • 【Signal Voltage】Positive phase amplification with high-level trigger. Output equals input.
  • 【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.
  • 【Control Transformer】Optocoupler isolation board provide isolation between low and high-voltage circuits when used with other electronic devices.
  • 【Functional Application】Devices for microprocessor Input/Output switching, DC/AC power control, communications equipment protection, and power supply regulation.
No. 4
AOICRIE 4pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module
  • PC817 4 channel optocoupler isolation board is independent, can control different voltage at then same time.
  • 4-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).
  • 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.
  • PC817 module jumper cap can be used to determine whether the output terminal is high potential output or low output.
  • 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.
No. 5
TAODAN 50pcs PC817 Optocoupler DIP 2.54 mm Pitch 4-pin DIP-4 IC Chipset
  • Photocoupler output type: phototransistor.
  • Number of pins: 4.
  • Needle distance: 2.54mm.
  • Package Quantity: 50 pcs.
  • Application: PC817 optocoupler is widely used in computer terminals, thyristor system equipment, measuring instruments, copiers, automatic ticketing, household appliances.
No. 6
DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module
  • Optocoupler isolation control.
  • 8-Channel input and output.
  • NPN / PNP (Low/High level) signal output.
  • Support DC 3.3V~5V Input.
  • DC 1.8V-24V load voltage.
No. 7
Chanzon 50pcs PC817 Optocoupler PC817C DIP Installation DIP-4 50%-600% Transfer Ratio 4pin Optocouple Compatible with EL817C/LTV817C/FL817C/el817 Optical Isolator
  • 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.
  • Number of Pins: 4 pin(dip-4), Through Hole
  • Package quantity: 50 pieces, packed in a durable and resealable plastic bag.
  • Compatible with: EL817C/LTV817C/FL817C Optocouplers
  • Used for: Opto isolator breakout circuit board, breadboard,arduino DIY, coupler replacement.
No. 8
Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143
  • Gikfun Packing 20pcs OPTOCOUPLER DIP-4 PC817C PC817
  • Number of Pin: 4
  • Pin Pitch: 2.54mm
  • Optocoupler Output Type: optical transistor
  • Used widely in computer terminals, system appliances, measuring instruments, registers, copiers, automatic vending machines etc
No. 10
Diitao 6PCS PC817 2 Channel Voltage Converter Module Optocoupler Isolation Driving Module 3.6-30V Driver Photoelectric Isolated Module for Triode, MOS Tube, Low Power Relay Module (6PCS 2Channel)
  • Driving Port Signal Voltage:3.3-24V; Output voltage range: 3.6-30V(The output current depends on the specific situation but no more than 10MA;When the total power is fixed, the voltage and current are inversely proportional.)
  • 【Jumper Cap】The jumper cap can achieve high potential output or low potential output.
  • 【Independent Voltage】Onboard 2-Channel 817:can achieve different voltage control at the same time.
  • 【Note】If it is a pulse signal, please note that the limit of 817 is below 3KHZ. If the control signal is greater than 3KHZ, do not use this module, it will not work properly.
  • 【Package Content】6 x PC817 2 Channel Optocoupler Isolation Board.

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Last update on 2025-07-03 / Affiliate links / Images from Amazon Product Advertising API