VISHAY SFH617A Optocoupler, 1 Channel DIP 4-Pin, 60mA, 5.3kV

The VISHAY SFH617A is a high-performance optically coupled isolator, designed to transmit electrical signals between circuits while providing galvanic isolation. This device comprises an infrared light emitting diode (LED) optically coupled to an NPN silicon photo transistor, effectively separating input and output to prevent voltage spikes and noise from damaging sensitive components. It is an essential component for ensuring signal integrity and safety in a wide range of electronic systems.

Key features include a low input current requirement of just 1mA, making it suitable for low-power applications. It offers high current transfer ratios, ranging from 40-320% at 10mA, with a minimum of 13% at 1mA, ensuring efficient signal transmission. The device boasts a very high isolation voltage of 5.3kV, providing robust protection against high-voltage transients. Additionally, it features a high collector-emitter breakdown voltage (BVCEO) of 70V minimum.

Every unit undergoes 100% testing of all critical electrical parameters, guaranteeing consistent performance and reliability. Its standard DIP (Dual In-line Package) format with 4 pins makes it easy to integrate into through-hole PCB designs, offering a compact and robust solution for isolation needs.

Primary Applications

The SFH617A is ideally suited for signal transmission between systems with different electrical potentials and impedances. It is commonly used in:

• Computer terminals and interface systems
• Programmable logic controllers (PLCs) and industrial system controllers
• Measuring instruments and test equipment
• Power supply feedback loops
• Microprocessor input/output (I/O) interfacing

With its combination of high isolation, reliable performance, and industry-standard packaging, the VISHAY SFH617A optocoupler is a trusted choice for engineers designing safe and reliable electronic circuits.