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Principles of Analog Electronics
book

Principles of Analog Electronics

by Giovanni Saggio
January 2014
Intermediate to advanced content levelIntermediate to advanced
567 pages
23h 13m
English
CRC Press
Content preview from Principles of Analog Electronics
Principles of Analog Electronics
268
8.3.3 Total Current
The total current density J in a semiconductor, which results from the motion of
charge carriers, can be the sum of four components depending on the type of
carriers, electrons, and/or holes, and the causes, drift or diffusion. Summarizing,
JJ J
np
=+
with
JJ JnqEqD
dn x
dx
nndriftn
diffusion
nn
()
=+ +
JJ JpqEqD
dp x
dx
ppdriftp
diffusion
pp
()
=+
8.3.4 Leakage Current
It is somewhat important to also dene the so called leakage current. In electron-
ics leakage current represents a parasitic and uncontrolled current, which ows
across regions of a material, not specically a semiconductor, where no
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Publisher Resources

ISBN: 9781466582026