sp3t smd switch rating calculation

Thread Starter

raoul69

Joined Jun 20, 2021
2
I have a sp3t switch, wich is rated at 300mA 4vdc with a contact resistance of 70MΩ max

can someone tell me how much mA I can draw on 24vdc, I prefer with formula, so I can understand it myself to
 

BobTPH

Joined Jun 5, 2013
4,032
70 MΩ seems a bit high for the resistance of a switch. Could you possibly mean 70 mΩ? It is pretty bad when you are off by a factor if one billion.

Bob
 

LesJones

Joined Jan 8, 2017
3,570
The rating given in your link are meaningless. They are contradictory. In one place it says 4 volts DC maximum it then says 50 mA maximum current at 12 volts.
There is no formula for working out a voltage or current rating at values different from the manufacturers ratings. Just keep below the manufacturers ratings.

Les.
 
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