PC817 DIP-4 Transistor Output Optocoupler – 4-Pin Phototransistor Type IC (Pack of 5 ICs)

The PC817 DIP-4 Transistor Output Optocoupler is a compact, single-channel photocoupler designed to provide reliable signal isolation between circuits. It consists of a gallium arsenide infrared emitting diode (IRED) optically coupled to a silicon phototransistor, all enclosed in a 4-pin dual in-line (DIP) plastic package.

This optocoupler is widely used in programmable controllers, fax machines, switching power supplies, and other digital systems where electrical isolation is crucial. The PC817 ensures safe and efficient transmission of digital or low-speed analog signals while protecting sensitive components from high voltages and transients.

🔧 Key Features

• Phototransistor output with high isolation
• 4-pin DIP package for easy PCB mounting
• 5000Vrms isolation voltage between input and output
• Low input current and high current transfer ratio (CTR)
• Stable switching characteristics
• RoHS compliant and lead-free

📐 Technical Specifications

📌 Applications

• Programmable logic controllers (PLC)
• Switching power supplies
• Signal isolation in microcontroller circuits
• Data communication systems
• Fax machines and printers

💡 Why Choose This Product?

The PC817 Optocoupler provides essential electrical isolation between input and output, enhancing circuit safety and signal integrity. Its compact DIP-4 form factor, high CTR, and reliable operation make it a preferred choice for both analog and digital isolation needs.

📦 Package Includes

• 5 × PC817 DIP-4 Optocoupler ICs