Due to the use of high dielectric constant insulating materials in MLCCs, they exhibit non-linear behavior in the low voltage range. This non-linearity causes the measured capacitance to vary with different applied voltages. The regulation (JIS C 5101-1-1998) specifies standards for the test signal.
For measuring MLCC capacitance, we typically use an LCR meter. However, LCR meters often experience voltage division due to the influence of current-limiting resistors when generating the output voltage signal. This can result in discrepancies between the measured values and the nominal capacitance stated in the product specification.
I suggest using an LCR meter that supports Automatic Level Control (ALC) functionality.
Due to the use of high dielectric constant insulating materials in MLCCs, they exhibit non-linear behavior in the low voltage range. This non-linearity causes the measured capacitance to vary with different applied voltages. The regulation (JIS C 5101-1-1998) specifies standards for the test signal.
For measuring MLCC capacitance, we typically use an LCR meter. However, LCR meters often experience voltage division due to the influence of current-limiting resistors when generating the output voltage signal. This can result in discrepancies between the measured values and the nominal capacitance stated in the product specification.
I suggest using an LCR meter that supports Automatic Level Control (ALC) functionality.
Automatic Level Control (ALC)
ALC incorporates a stable voltage circuit into the test circuit, automatically correcting any offset in voltage level back to the user-set voltage signal value. This feature helps to mitigate the voltage division issue and improves the accuracy of the capacitance measurement.
When the LCR meter is not providing a stable AC voltage level, the measured capacitance value may be lower (7.85uF).
When using the MICROTEST 6632 impedance analyzer with the FX-LR0001AC voltage level compensation fixture, precise measurements indicate a capacitance value close to 10uF.
MLCC | Testing Solution
Instruments: 6632 Impedance Analyzer / 6630 LCR Meter
ALC ON (Supports AC Voltage Level Compensation)
MLCC | Testing Solution
Instruments: 6632 Impedance Analyzer / 6630 LCR Meter
ALC ON (Supports AC Voltage Level Compensation)
