Global
These are navigation links to move inside this page.
Sitemap
Quick links to OMRON IA in your country.
-
- Middle East
-
Please contact OMRON Europe B.V. in Netherlands.
Question
What is the difference between an SSR and a power MOS FET?
Answer
There are two main differences between SSRs and power MOS FETs.
Difference 1:
There are DC SSRs and AC SSRs.
A Power MOS FET Relay can be used with either a DC load or AC load.
Difference 2:
The leakage current is smaller compared with an SSR.
SSR:
Leakage current causes the lamp to light dimly. A bleeder resistor is added to prevent this. The SSR requires a snubber circuit to protect the output elements. This is the cause of leakage current.
Power MOS FET Relays:
Because the leakage current is very small (e.g., 10 mA max.) the lamp does not light dimly. This is because a snubber circuit is not required to protect the output element MOS FET. A varistor is used to protect the MOS FET
The circuit can be simplified and work reduced because a bleeder resistor is not required.
Top of page
