I have been looking at a lot of different transistors. N Channel MOSFET and NPN/PNP. I am looking for one that has very low off leakage current. Less than 1uA. I seem to be having problems finding a appropriate part number. Other requirements are not critical. 9V max voltage. 100 micro-amps minimum current when fully on. Need to turn it on or off using 0V (OFF) 3.3V (ON). It is simply a discreet circuit, speed is not a factor.