Component dependency factors
The measured impedance value of a component depends on several
measurement conditions, such as frequency, test signal level, and so on.
Effects of these component dependency factors are different for
different types of materials used in the component, and by the
manufacturing process used. The following are typical dependency
factors that affect measurement results.
1. Frequency
Frequency dependency is common to all real components because of
the existence of parasites. Not all parasites affect the measurement, but
some prominent parasites determine the component’s frequency
characteristics. The prominent parasites will be different when the
impedance value of the primary element isn’t the same. The typical
frequency response for real resistors, capacitors and inductors is shown
as Figure-9, 10 and 11, respectively.
Figure- 9. Resistor frequency response
10