Re: gEDA-user: [SOT] suggestion for a SMT switch

[DJ Delorie <dj@xxxxxxxxxxx>]

> I'm concerned about leakage.  This device will probably sit on a
> shelf for some time (with battery inserted, pic in sleep mode).  I
> wanted to make sure there wasn't a trickle of current through the
> motor.

The idle current of the 1G125 is probably more than the leakage
through the MOSFET.

Perhaps you could tie 4-5 PIC pins together to get the needed current?

Otherwise, look for the smallest MOSFET that will handle your current,
as smaller size usually means smaller leakage current.  For example,
the Fairchild 2N7002K (SOT-23) leaks 1 uA when off (Vgs == 0) but the
2N7002T (SOT-523) leaks only 1 nA when off.  The 1G125 "leaks" 10 uA
when on (Icc).


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