Composite Transistors XN421F Silicon NPN epitaxial planer transistor Unit: mm For switching/digital circuits 0.65±0.15 2.8 –0.3 +0.2 +0.25 1.5 –0.05 6 0.65±0.15 1 0.3 –0.05 0.5 –0.05 0.95 2....