That FET looks OK - I'd prefer more voltage rating even at the expense of
lower current rating BUT it's OK.
At 5V 20 mA it will be utterly unstressed.

Vgsth is acceptably good
Rdson is acceptably good.

Note that it has a MAXIMUM Vgs of 8V - very low - which goes with the low
Vdmax and low Vgsth.

With 5V gate drive you want to be sure you do not exceed the 8V Vgs with
spikes etc (but usually modest excess is OK).
As long as 5V drive goes fully to 5V rail it can be driven by a ground
referenced 5V signal.
Vgsth is nicely low which means that as eg 4V drive leaves 1V on the gate
wrt V+ and is "starting to get risky".

You will have no problem with visually clean transitions with normally fast
5V drive from normal logic families. .

A high side PNP bipolar would work as well and could be FAR cheaper.
Saturation voltage depends on base drive but is probably acceptable with
high beta transistors.
(eg my jellybean choice us usually BC337/327/807/817 with -40 (high beta)
suffix.)


Your FET is not as low cost as I'd expect but will do the job well enough
subject to above points



             Russell
--=20
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