Which MOSFET should I choose?

Thread Starter

varundua

Joined Jun 15, 2015
21
Hey,

I have to choose an e-mosfet which acts a switch and is connected to an inductance coil which requires 900mA to charge. The coil is connected to the drain of the e-mosfet and a diode is connected parallel to the coil. The source is grounded and the gate gets an input from the output of IC555 timer of 12V.

So which model of mosfet should I choose in this case?
 

Alec_t

Joined Sep 17, 2013
14,280
Choose a FET with a low Rds(on) spec (e.g. less than 200mΩ), a power rating of several Watts and a Vds rating at least twice the coil supply voltage, in a case style you're comfortable with. The main vendors' web-sites have parametric search functions to help you choose.
 
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