Semiconductor Fundamentals Unit 1 – Introduction to Semiconductors
bipolar transistor - a three-layer transistor constructed by NPN or PNP doping; more commonly
called junction transistors. Bipolar refers to the use of N and P doping materials.
emitter - an end region of a transistor. The emitter is doped with the same type of impurity as the
collector.
base - the center region of a transistor, between the emitter and collector. The base is always
doped with a material opposite in polarity to the emitter and collector doping. It is usually very
thin.
collector - an end region of a transistor. Physically, the collector area is usually the largest area
of a transistor because it is the region where most power is dissipated.
depletion region - an area very close to PN junction where a few charges from adjoining areas
tend to cross the border and neutralize each other.
EQUIPMENT REQUIRED
F.A.C.E.T. base unit
SEMICONDUCTOR DEVICES circuit board