SERVICE INFORMATION FROM HEWLETT-PACKARD
3rd Quarter 1987
A Few Fundarnentalls About Semiconductors
The diode, one of the simplest of
semiconductor devices, functions as a
low-resistance conductor to current With Forward Bias nd Zener Diode
flowing in one direction and as a
virtually "open" conductor for current
flowing in the opposite direction.
Diodes are most commonly made
by growing materials with p-type
impurities on materials with n-type
impurities to form what is known as
a pn junction.
These devices are said to be for-