Relays are electrically operated switches that can be roughly classified into contact (mechanical) and non-contact (semiconductor) types. Optical relays are semiconductor relays made of MOSFET light-coupled LEDs, which are mainly used as substitutes for signal relays. Optical relays do not contain moving contacts, so they have longer reliability than mechanical relays.
Mechanical relays generally have a low on-resistance, while optical relays have a series of high to low RON products. Some high-capacitance optical relays have a lower RON than mechanical relays. Unlike mechanical relays, leakage currents are generated when an output voltage is applied to an optical relay.
We can supply Telecom relays and Latching Relays, if you need, welcome to contact us.
