PC817 Optocouplers & Optical Isolator Modules
Protecting Low-Voltage Microcontrollers from High-Voltage Electrical Noise
Safeguard sensitive control electronics with our complete range of PC817 Optocouplers and Optoisolator Breakout Boards. Designed to bridge high-voltage DC/AC circuits to delicate microcontrollers, optocouplers transfer electrical signals using internal infrared light pulses. Because there is no direct electrical connection between the input and output sides, your control board stays completely shielded from high-voltage spikes, inductive kickback, and ground loops.
Whether you are using standalone DIP-4 ICs on custom PCBs or convenient 1, 2, 4, or 8-channel breakout boards, optocouplers are essential for reading high-voltage signals, interfacing industrial sensors, and isolating noisy motors or solenoids.
Common Applications
High-Voltage Signal Conversion: Read 12V or 24V industrial sensor signals directly using 3.3V or 5V GPIO pins.
Microcontroller Protection: Safely isolate Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and Single-Board Computers (SBCs) from motor noise.
Ground Loop Elimination: Prevent ground noise issues across separate power systems or long cable runs.
Mains & AC Sensing: Interface high-voltage power monitoring circuitry safely to digital logic.
Key Features
Complete Optical Isolation: Transfers signals across an internal IR light gap, providing up to 5,000V RMS isolation voltage.
Multi-Platform Logic Compatibility: Effortlessly translates signals between 3.3V, 5V, 12V, and 24V logic levels.
Fast Switching Speeds: Supports signal frequencies suitable for digital inputs, limit switches, and pulse counts.
Available in DIP-4 & Breakout Modules: Choose bare ICs for custom designs or pre-assembled modules with screw terminals for fast prototyping.
Specifications:
Core Transceiver Chipset: PC817 (Phototransistor Output)
Isolation Voltage: Up to $5,000\text{ V RMS}$
Input LED Forward Voltage: ~1.2V DC
Output Collector-Emitter Voltage: Max 80V DC
Maximum Collector Current: 50 mA
Available Form Factors: Standard DIP-4 Package & 1/2/4/8-Channel Breakout Modules
|
Channel |
2 Channel , 4 Channel |
|
Volt |
12V , 5V |