MOSFET selection

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  1. - 23rd July 2025, 23:04 #3
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    Default Re: MOSFET selection

    Quote Originally Posted by amgen View Post
    they have these things..... SSR (solid state relay) 4 pin dip..... >1 amp, 60 v...... this is at Digikey but should be able to get most anywhere...
    Very interesting, I wasn't aware of these puppies. I have 5V 100mA mechanical relays similar to these:
    https://partsource.ca/cdn/shop/produ...g?v=1686674311

    I'll probably get a few SSRs from Digikey, just to have them on hand. But I really like MOSFETs; the AO3400A is only $0.0759 at JLCPCB.

    Do you see anything wrong with the AO3400A for:
    - max 800 mA load,
    - 9V load,
    - 5V trigger (or less),
    - single burst use.

    That weird spec for Vsd with Vgs of 0 threw me off:
    Vsd, Diode forward voltage, 0.7V at Is=1A, Vgs=0V
    I don't know what to make of that spec.
    Last edited by Demon; - 23rd July 2025 at 23:12.
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