I need a transistor to use as a switch. One side of the switch will go 
to Vcc, the other will go to the anode of an LED which then goes to a 
resistor and then to ground. I'll need 12 of these on my board (I've got 
twelve 12 different LED's).

Normally I use the ULN2003 driver chip for this purpose, but I can't 
find a PNP version of it (i.e. a version that will provide a path to Vcc 
rather than to ground).

The current through the switch won't be more than 30 mA.

I could use a simple bi-polar junction transistor such as a BC327 but 
then I'd need a resistor for the base. And because I've got 12 of these 
LED's, that would mean 12 more resistors on my board, so I'd rather go 
for an option that doesn't require a resistor.

So I'm thinking along the lines of a NMOS transistor. The gate will be 
connected to an output pin on a PIC chip. The source will go to Vcc and 
the drain will go to an LED's anode.

Can anyone suggest a very simple NMOS transistor that's on at 5 V and 
off at 0 V, and that can pass 30 mA? Or if you've got another idea, 
please throw it out there :-D

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