BulletMagnet83:
Looks like a P-Channel MOSFET. I'll bet there's a cheap "standard" one people tend to use for this sort of thing, but I don't have a part number off the top of my head to give you!EDIT: You could try a parametric search on the component supplier's website of your choice, to find which ones are suited to your requirements
thanks for the info, any possibility of using a digital pot like MCP413 or AD5204, to control the brightness of 7 seg displays by limiting voltage, instead of PWM ?