10 Best Optocouplers

Seeking the finest best optocouplers can be a daunting task, but worry not – our team has done the heavy lifting for you. We’ve meticulously sifted through the market, putting the foremost products in this category to the test under various conditions. Our intensive examination offers a deep insight into the merits and shortcomings of each option.

Our exhaustive review cuts to the core of each best optocouplers item. We closely analyze key attributes, performance levels, and the price-to-value ratio to bring you a straightforward and unbiased viewpoint. Our review process is all-encompassing, focusing keenly on Longevity, Efficiency, and Affordability. Recognizing the unique requirements and budget constraints of different users, our goal is to help you pinpoint the best optocouplers that resonates most with your individual needs.

Editor’s Note: Updated in March 2024, this review now includes the latest data and a wider selection of products, ensuring that our recommendations stay relevant and comprehensive, guiding you through the ever-changing marketplace of best optocouplers.

Top Products for best optocouplers

# Image Product Name Price
1 ALLECIN PC817 PC817C Transistor Output Optocoupler DIP-4 2.54mm Pitch for Arduino DIY (Pack of 50pcs) ALLECIN PC817 PC817C Transistor Output Optocoupler DIP-4 2.54mm Pitch for Arduino DIY (Pack of 50pcs) Buy Now – $7.99
2 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz Buy Now – $14.99
3 NOYITO PC817 4-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module NOYITO PC817 4-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module Buy Now – $6.99
4 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 Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (3-5V) Buy Now – $6.50
5 (10PCS) 4N33M OPTOCOUPLER PHOTODARLINGTON 6DIP 4N33 (10PCS) 4N33M OPTOCOUPLER PHOTODARLINGTON 6DIP 4N33 Buy Now – $9.99
6 BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs) BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs) Buy Now – $7.99 ($0.16 / Count)
7 DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module Buy Now – $15.99
8 Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143 Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143 Buy Now – $6.88
9 HiLetgo 12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level Trigger HiLetgo 12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level Trigger Buy Now – $5.89
10 10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board 10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board Buy Now – $14.99 ($1.50 / Count)

1. ALLECIN PC817 PC817C Transistor Output Optocoupler DIP-4 2.54mm Pitch for Arduino DIY (Pack of 50pcs)

ALLECIN PC817 PC817C Transistor Output Optocoupler DIP-4 2.54mm Pitch for Arduino DIY (Pack of 50pcs)

Key Features:

  • ALLECIN PC817 is a Single-channel dual inline package photocoupler- Perfectly suitable for variety electronic experiments.
  • Number of Pin: 4; Pin Pitch: 2.54mm.
  • Features: High isolation voltage between input and output & Double transfer mold package.
  • Widely Application: computer terminals & SCR system equipment & measuring instruments & photocopiers & automatic ticketing & household appliances.
  • Humanized packaging for easy storage and use. ### Please confirm the data before purchasing.

Buy Now From Amazon – $7.99


2. 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz

5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz

Key Features:

  • 【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.

Buy Now From Amazon – $14.99


3. NOYITO PC817 4-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

NOYITO PC817 4-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

Key Features:

  • This module is used when it comes to the need for isolation control and voltage conversion.
  • Drive terminal signal voltage: 3.6-24V. Output terminal voltage range: 3.6-30V (output current depends on the specific situation but the maximum does not exceed 10MA, the total power is constant, the voltage and current are inversely proportional)
  • It 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.
  • Photoelectric isolation has strong anti-interference ability. It can drive high-power triodes, MOS tubes and other applications that require high-voltage driving, and can also directly drive low-power 24V relays.If it is a pulse signal, please note that the limit of 817 is 4KHZ or less. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.
  • 【8-Channel Optocoupler Isolation Board ASIN : B09RGTBDKJ 】 NOYITO PC817 4-Channel Optocoupler Isolation Board User Manual https://1drv.ms/u/s!AlzQUCOyZQhKgT98ibtG22R8W5eQ?e=VfKbrK

Buy Now From Amazon – $6.99


4. 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 Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (3-5V)

Key Features:

  • 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.

Buy Now From Amazon – $6.50


5. (10PCS) 4N33M OPTOCOUPLER PHOTODARLINGTON 6DIP 4N33

(10PCS) 4N33M OPTOCOUPLER PHOTODARLINGTON 6DIP 4N33

Key Features:

  • Part NO.:4N33M
  • Package:6-DIP (0.300″, 7.62mm)
  • Description:OPTOCOUPLER PHOTODARLINGTON 6DIP

Buy Now From Amazon – $9.99


6. BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)

BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)

Key Features:

  • 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

Buy Now From Amazon – $7.99 ($0.16 / Count)


7. DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module

DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module

Key Features:

  • 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.

Buy Now From Amazon – $15.99


8. Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143

Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143

Key Features:

  • 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

Buy Now From Amazon – $6.88


9. HiLetgo 12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level Trigger

HiLetgo 12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level Trigger

Key Features:

  • Module uses genuine high quality relay, normally open interface maximum load: AC 250V / 10A, DC 30V / 10A
  • Using optocoupler chip isolation, strong drive capability, stable performance; trigger current 5mA
  • Module can be set by jumper high or low trigger
  • Fault-tolerant design, even if the control line is broken, the relay will not move
  • The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient

Buy Now From Amazon – $5.89


10. 10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board

10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board

Key Features:

  • The 1-channel optocoupler isolation module adopts 5.0 pitch screw terminals for convenient wiring
  • 1-way 817 optocoupler drive terminal signal voltage: 12V 1mA
  • 1 channel way optocoupler isolation module , 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
  • PC817 12v 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.

Buy Now From Amazon – $14.99 ($1.50 / Count)


Essential Buyer’s Guide for Selecting the Perfect best optocouplers

Identify Your Requirements

Pinpoint what you specifically need from the best optocouplers. Understand the features and functionalities that are most critical for your use-case to narrow down your choices.

Inspect Product Quality

Always prioritize the quality of the best optocouplers. High-quality items tend to last longer and provide better performance. Look for products with strong materials, good build quality, and positive user feedback.

Assess Brand Reputation

The brand’s history can tell you a lot about the quality and reliability of the best optocouplers. A reputable brand usually guarantees a certain level of quality and customer service.

Vendor Credibility

Consider the credibility of the seller or manufacturer. A reputable vendor or manufacturer often correlates with better customer service and product reliability.

User Reviews and Ratings

Take the time to read through user reviews and ratings. They offer valuable insights into how the best optocouplers performs in real-world scenarios and can highlight any potential issues.

Longevity and Maintenance

Consider how long the best optocouplers lasts under normal use. A product that requires less maintenance and is more durable is typically a better investment.

Usability and Convenience

Ensure the best optocouplers is easy to use and fits comfortably into your routine or lifestyle. User-friendly products enhance your experience and are more likely to satisfy your needs.

Compare Price to Value

Evaluate if the best optocouplers’s price is reflective of its value. Sometimes paying a little extra upfront can save you money in the long run due to better quality or features.

Product Availability

Check the availability of the best optocouplers. Products that are easily accessible tend to have better after-sales support and availability of parts or accessories.

Comprehensive Comparison

Compare different best optocouplers products against each other. Look at each option’s features, benefits, and drawbacks to make an informed decision.

Warranty and After-Sales Support

A solid warranty and reliable customer support can greatly enhance your experience with the best optocouplers. These factors can also provide peace of mind and save costs in the future.

Stay Updated

The market is always evolving. Keep an eye on new releases and developments to ensure you choose a best optocouplers that remains relevant and up to date.

Make Your Final Choice

After thorough consideration, choose the best optocouplers that best meets your criteria and expectations, balancing all factors like quality, usability, and cost.

Our reviews and guides are meticulously curated to assist you in navigating the selection process, helping you make a choice that’s both satisfying and well-informed.


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