Atlas
LCR45
User Guide
January 2019 – Rev 4
Page 24
Appendix C – Auto Component Identification Criteria
It is important to appreciate that, in automatic mode, the LCR45 can only
decide on the identity of the component under test using results of the
electrical tests that it performs on the component.
The LCR45 determines the type of component under test according to the
criteria shown here.
If the measured parameters of your component do not suit these criteria,
please select a manual mode for your component type.
Inductor and Resistor Detection
The LCR45 will distinguish between components that are largely inductive or
largely resistive according to the values of inductance and resistance that it
has measured. This is illustrated in the following graph.
1
10
5
100
1000
10 000
100 000
1
1
0
1
0
0
1
00
0
10
0
0
0
Measured DC Resistance (Ohms)
M
e
a
su
re
d
I
n
d
u
c
ta
n
ce
(
µ
H
)
In
du
ct
or
Re
sis
to
r
For example, if the inductance of your component is measured at 100µH and
it has a DC resistance of 100Ω, then the LCR45 will tell you that you have a
resistor. If however the resistance was only 10Ω, then the LCR45 will tell you
that you have an inductor.
Note that any inductor with a DC resistance of more than 1000Ω will be
identified as a resistor.
