The Rdson is the tiny remaining resistance when the MOSFET is driven fully on. It's typically in the mΩ range, like 0.02Ω. You need it to estimate the heat that will be generated by the MOSFET itself while the load is on.What is on state resistance?
The pkg always matters, since it affects the ability to dissipate that heat.packaging type is not of big importance and I will operate this device at common house temperature, about 20C.
Isn't a logic level MOSFET.
Isn't worth the labour, and these heatsinks are really clunky.Disembowel a dead computer power supply forgotten behind the spider webs, it likely has a beefy mosfet as switching element, usually recognized as part number beginning with 'K' , but many others are used too.
Research its data sheet.
And comes mounted on a free heat sink...
I need a mosfet which is able to produce really short squared pulses (0.4uS) with good steep fronts. Thanks for great help.The Rdson is the tiny remaining resistance when the MOSFET is driven fully on. It's typically in the mΩ range, like 0.02Ω. You need it to estimate the heat that will be generated by the MOSFET itself while the load is on.
The pkg always matters, since it affects the ability to dissipate that heat.
You need a "logic" level N-channel MOSFET rated to at least 10A, and more would be better. Extra safety factor adds little to the cost.
You haven't defined what you mean by "really fast". What frequency are you talking about? The gate of a MOSFET has a small capacitance and inductance, like any real device. These become increasingly important at higher frequencies and you have to design around them.
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