FYI - 99% of the pickups on the market today are passive. outside of a few offerings from EMG, you will be hard pressed to find any active pickups
what I believe you are instead referring to is an active pre-amp in a bass ... and most any passive pickup plays nicely thru an active pre-amp
for the pickups, do you have a preference? 4-string, 5-string ... P-bass, J-bass, soapbars, etc ...? what's the sound you're shooting for and what are your budget constraints?
all the best,
R