photomos relay
A PhotoMOS relay represents a cutting-edge electronic switching device that combines optical isolation technology with MOSFET output capabilities. This innovative device uses a LED to trigger a photodiode array, which in turn controls a power MOSFET switch, creating a completely isolated switching mechanism. The internal structure consists of an input LED, a photovoltaic array, and MOSFET switches, all integrated into a compact package. These relays excel in applications requiring high-speed switching, offering exceptional isolation between input and output circuits while maintaining zero mechanical wear. PhotoMOS relays are particularly valuable in test and measurement equipment, semiconductor testing devices, security systems, and medical equipment where precise control and reliability are paramount. Their ability to handle both AC and DC loads, combined with their remarkably long operational lifespan, makes them an ideal choice for modern electronic systems. The absence of moving parts eliminates the bouncing and noise issues commonly associated with mechanical relays, while their solid-state nature ensures consistent performance across millions of operations.