What are the characteristics of solid state relays?

Solid state relays are non-contact electronic switches with isolation function. There are no mechanical contact parts during the switching process. Therefore, in addition to having the same functions as electromagnetic relays, solid state relays are also compatible with logic circuits, resistant to vibration and mechanical shock, and have unlimited installation locations. , has good moisture-proof, mildew-proof and anti-corrosion properties, and also has excellent performance in explosion-proof and ozone pollution prevention. It has the characteristics of small input power, high sensitivity, small control power, good electromagnetic compatibility, low noise and high operating frequency.
(1) There are no mechanical parts inside the SSR, and the structure adopts a fully sealed infusion method. Therefore, the SSR has the advantages of vibration resistance, corrosion resistance, long life and high reliability, and its switching life is up to 10.1 million times;
(2) Low noise: AC-type SSR uses zero-crossing trigger technology, which effectively reduces the voltage rise rate dv/dt and current rise rate di/dt values on the line, making the SSR minimally disruptive to the mains power during long-term operation. ;
(3) The switching time is short, about 10ms, and can be used in higher frequency applications;
(4) Photoelectric isolation is used between the input circuit and the output circuit, and the insulation voltage is above 2500V;
(5) The input power consumption is very low and compatible with TTL and COMS circuits;
(6) The output end has a protection circuit;
(7) Strong load capacity.