Solid State Optronics

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Solid State Optronics (SSO) is a pioneering company specializing in the design and manufacture of miniature Solid State Relays (SSRs) and a wide range of optically isolated semiconductor devices. Founded in 1982 in Silicon Valley, SSO revolutionized SSR design by drastically reducing component count, improving reliability, and lowering costs. The company is known for continuous innovation, including being the first to introduce over-current protection in a miniature 4-pin SOP package, earning industry recognition. Today, SSO offers over 200 products, such as optocouplers, MOSFET drivers, TRIAC drivers, and custom high-temperature, high-reliability devices.
Featured Products
A compact optocoupler that combines a phototransistor and an infrared LED to deliver high isolation with low input power consumption, enabling precise control of low-level DC signals. It’s well-suited for use in telecommunications, industrial controls, instrumentation, and a wide range of digital and microprocessor-based systems.
A high-speed optically coupled gate driver delivering up to 1A output current, designed for efficient control of 1200V/50A IGBTs and MOSFETs in demanding power applications. With fast switching and a wide voltage and temperature range, it’s an ideal solution for motor drives, industrial inverters, UPS systems, and switch-mode power supplies.
Packaged in a compact 4-pin SOP, this zero-volt crossing triac driver features low trigger current and long-life reliability, making it well-suited for use in home appliances, motor controls, temperature regulation, and solid-state relay applications.
A bi-directional solid-state relay featuring zero-volt cross switching and high blocking voltage, ensuring reliable operation with minimal false triggering. It comes in a compact 6-pin DIP package, offers low input control current, and is RoHS, Pb-Free, and REACH compliant for long life and high reliability.
Features an LED input optically coupled to a photodiode array output with a built-in active discharge circuit, enabling fast turn-on and quick turn-off of power MOSFETs. Its miniature 4-pin SOP package and 6V gate drive voltage make it ideal for driving discrete MOSFETs in lighting controls, process modules, solid state relays, and solenoid control applications.