ONSEMI FOD817C300 Optocoupler, 1 Channel, DIP 4-Pin, 50mA, 5kV

The ONSEMI FOD817C300 is a high-performance phototransistor optocoupler designed for robust isolation and reliable signal transfer. It comprises a gallium arsenide infrared emitting diode coupled with a silicon phototransistor, creating a single-channel, 4-pin solution perfect for interfacing digital logic and microprocessor inputs with higher voltage circuits.

This component offers excellent electrical isolation up to 5kV, protecting sensitive control electronics from voltage spikes and noise present in power management systems. With a high current transfer ratio (CTR) of 200% and a continuous forward current rating of 50mA, it ensures efficient and stable operation. The device is built to endure, featuring a high operating temperature tolerance and a guaranteed minimum collector-emitter voltage (BVCEO) of 70V for enhanced reliability.

Key Applications

• Power Management: Ideal for providing safe, isolated feedback in switch-mode power supplies (SMPS), inverters, and motor drives.
• Microprocessor Interfacing: Safely connects low-voltage microcontroller outputs to higher-voltage industrial controls.
• Digital Logic Isolation: Provides noise immunity and ground loop separation in digital communication lines and logic circuits.
• Industrial Control Systems: Used in PLCs and control boards where electrical isolation between different system sections is critical.

The optocoupler is housed in a standard DIP (Dual In-line Package) format, making it compatible with through-hole PCB assembly. It is also fully approved for use in lead-free (Pb-free) infrared (IR) reflow soldering processes and carries VDE approval, confirming its compliance with stringent international safety standards. This combination of performance, reliability, and certification makes the FOD817C300 a trusted choice for demanding electronic designs.