The 2N7000 would probably be the best choice. A 2N2222/3904/4401/etc 
could be directly driven by an OC output with pullup. Just connect it 
to the base, emitter to ground, collector to relay. The pullup will 
bias the trasistor on, and the OC output will shunt the pullup to 
ground and turn it off. The danger with doing this is that some 
parallel ports can change the OC outputs to totem pole for higher 
speed operation.

For parallel port lines that are not OC (data lines), a FJN3305R can 
be used. Lower cost than a 2N7000, and a bit more rugged.

http://www.fairchildsemi.com/ds/FJ/FJN3305R.pdf



At 06:00 PM 7/2/2007, you wrote:
>Short version: What is the absolute minimum footprint driver circuit (NOT
>SMT) that will work from an Open Collector output with a 4.7K pull up to +5
>(PC parallel port nStrobe pin) and drive a small OMRON G5LE-1 DC5 which has
>a 5 volt, 63 Ohm coil?

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