MOSFET selection


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  1. #1
    Join Date
    Jan 2005
    Location
    Montreal, Quebec, Canada
    Posts
    3,169

    Question MOSFET selection

    My requirements:
    - can easily handle 800mA at 9V (to drive a solenoid),
    - will be used in single bursts, not continuously,
    - can be triggered using 5V signal,
    - low cost,
    - small footprint (as opposed to a TO220).

    Found this MOSFET at JLCPCB for $0.0732 ($0.67 at Digikey), and was wondering if this was too good to be true.
    https://jlcpcb.com/api/file/download...23985357750272

    1.05V, Vgs(th), Gate Threshold Voltage
    2A, Is, Maximum Body-Diode Continuous Current

    Am I missing something?

    I'm surprised that this can withstand 2A in such a tiny package, with no large heatsinks like the TO220. At first I was elated, but now I'm confused by the Vsd (Diode forward voltage) rating: 0.7V at Is=1A, Vgs=0V. How can Vgs be 0V?

    Added benefit, it's a Basic part over at JLCPCB, so no extra mounting fee.
    Last edited by Demon; - 23rd July 2025 at 15:58.
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

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