About Transistors (BJT)
NPN and PNP bipolar transistors for switching and amplifying: BC547, BC557, 2N2222, 2N3904 in TO-92, BD139 and BD140 in TO-126, TIP122, TIP41C and MJE3055T in TO-220, and 2N3055 power transistors in TO-3. Each listing shows the pin order (E, B, C).






















