Both can be used as switches, so what is the difference between MOS tubes and relays?

木犯001号

Both can be used as switches, so what is the difference between MOS tubes and relays? [Copy link]

秦天qintian0303

Relay is a pure physical switch.

wangerxian

MOS tubes cannot control AC power.

maychang

There are many differences, the biggest one may be that the MOS tube switching speed is much faster than the mechanical switch. The operating frequency of the mechanical switch is at most 200Hz, while the MOS tube is at least tens of kHz.

qwqwqw2088

The switching frequency is not of the same order of magnitude.

If the load is an inductive load, it is better to use a relay. The MOS tube needs to be designed with a suitable drive circuit, which is easy to break down.

黑屋白巫

The application scenarios are different, right? Relays are closer to IGBTs?