
High
Capacitance
DUT
Measurement
4339B
Surface
Resistivity
Surface
Resistivity
is
dened
as
resistance
per
unit
surface
area.
Similar
to
volume
resistivity
,
surface
resistivity
is
the
resistance
of
a
square
of
a
material
whose
side
length
is
1
m,
(
one
square
meter).
Surface
resistivity
is
given
as:
s
=
P
er imeter
Gap
R
s
where
,
s
Surface
resistivity
[]
P
erimeter
Eective
perimeter
[mm]
Gap
Gap
between
main
and
guard
electrodes
[mm]
R
s
Measured
surface
resistance
[]
When
the
16008B
Resistivity
Cell
is
used,
the
equations
above
become:
s
=
(D
1
+
D
2
)
D
2
0
D
1
R s
D
1
Main
electrode
diameter
[mm]
D
2
Guard
electrode
diameter
[mm]
Figure
7-2.
Surface
Resistivity
7-4
Measurement
Basics
Summary of Contents for 4339B
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Page 55: ...4339B Initial Inspection Figure 1 1 Power Cable Supplied Getting Started 1 11 ...
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Page 268: ...Procedure 4339B Figure B 5 A1 Main Board B 8 Handler Interface Installation ...