NPN Silicon Epitaxial Planar Transistors especially suited as line switch in telephone subsets and in video output stages of TV receivers and monitors.
As complementary types, the PNP transistors MPSA92 and MPSA93 are recommended max. ∅ .022 (0.55) .098 (2.5) E B C
Datasheets by Manufacturer
MPSA43 — Fairchild Semiconductor — NPN High Voltage Amplifier