Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Most discrete transistor can operate at 5MHz.
VCE break down voltage > 50V that you have to chose from data book or vendor.
But seems like one key factor is overlooked:
What is the output power and expected power dissapated in the transistor
so that it would not burn up.
The MPQ6002 can be really difficult to find, but I would consider descrete transistors as replacemant - 2xNPN transistors and 2x PNP (see picture below) ..
You can try:
2N2218 .. 2N2222, BC847, or similar as NPN ..
2N2904(5,6 ..), BC557, .. as PNP ..