Are you planning to use P-channel High side switches ?
I believe so. And to make it work, I will probably need a P-channel device. Source connect to 3.3V and Drain connected to 3.3V devices I want to turn on/off. In order for the load to be shut down when the ESP8266 goes to sleep, I believe I'll need to put an N-channel device to control it (maybe, not sure if ESP8266 GPIO lines float when it's sleeping). Something like this:
I'm looking for suggestions for the device(s) to use. I searched Newark, and the logic-level devices with low S-D resistance all seem to be overkill - high amperage and voltage devices, like FQPF27P06. I was looking for something in a TO-92 case or similar, but what I found had a S-D resistance of around 7 ohms, which seems high. I'm only switching less than 100ma at 3.3V.
NOTE: If you can't tell already, I don't know what I'm talking about. I understand BJT transistors, but not FETs.
Also, I tried to insert the diagram from a Dropbox shared folder, but for some reason it isn't showing up. Thus the URL link too.
Thanks.