have you looked at these guys:

http://www.mouser.com/Search/Refine.aspx?Keyword=3DNUD3112

they're inductive load drivers.  I have been looking for an excuse to try
them but haven't had to drive relays or solenoids lately.

DougM

On Thu, May 26, 2011 at 2:56 PM, V G <x.solarwind.x@gmail.com> wrote:

> I need to select an appropriate MOSFET for my relay switching.
>
> Coil specifications are as follows:
>
> Coil Power: 1200 mW
> Nominal Voltage: 12Vdc
> Pick-Up Voltage: 8.4Vdc
> Drop-Out Voltage: 1.2Vdc
> Maximum Voltage: 14.4Vdc
> Coil Resistance: 120ohm
>
> Olin suggested the IRLML2502, which is a nice MOSFET, but Mouser doesn't
> stock it, and I'm going to be using Mouser as my supplier. I searched up =
a
> bunch of other small signal MOSFETS, and came across this one:
>
> PMV56XN (http://www.nxp.com/documents/data_sheet/PMV56XN.pdf)
> 16 thousand of them in stock
> $0.134 each (very cheap compared to the other options)
> Rds ON is only 0.056 ohms
> Vds breakdown is at 20V
> Ids up to 3.76A
> 1.92W dissipation
> SOT23.
>
> Sound like a reasonable device? Also, the gate seems to be very sensitive
> on
> this one. Probably a good thing, since I'm working with low voltages.
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