What do I want to look for on a BJT datasheet to find out the maximum operating frequency before distortion occurs? Or perhaps the question should be: How do I know how fast a transistor can cause the main current to change in response to a change in the base signal current?
Also, is there a noteable difference in PNP and NPN BJTs in this regard? I read that P-Channel mosfets generally have higher slew rates than N-Channel, making them favorable if you need extremely fast response. Is there any rule of thumb like that for BJTs?