Transistors 2N2222 (NPN Low Power BJT) 2N3904 (NPN General Purpose) 2N3906 (PNP General Purpose) 2N5459 (N-Channel JFET) 2N7000 (N-Channel MOSFET) PN2907A (PNP General Purpose BJT) TIP120 (NPN Epitaxial Darlington) TIP122 (NPN Epitaxial Darlington) TIP125 (PNP Epitaxial Darlington)