C03E.pdf

May.17,2013

• This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.

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2. Measurement of Capacitance

1. Measure capacitance with the voltage and frequency

specified in the product specifications.

1-1. The output voltage of the measuring equipment may

decrease occasionally when capacitance is high.

Please confirm whether a prescribed measured

voltage is impressed to the capacitor.

1-2. The capacitance values of high dielectric constant

type capacitors change depending on the AC voltage

applied. Please consider the AC voltage

characteristics when selecting a capacitor to be used

in an AC circuit.

Continued on the following page.

Continued from the preceding page.

3. Applied Voltage

1. Do not apply a voltage to the capacitor that exceeds the

rated voltage as called out in the specifications.

1-1. Applied voltage between the terminals of a capacitor

shall be less than or equal to the rated voltage.

(1) When AC voltage is superimposed on DC voltage,

the zero-to-peak voltage shall not exceed the

rated DC voltage.

When AC voltage or pulse voltage is applied, the

peak-to-peak voltage shall not exceed the rated

DC voltage.

(2) Abnormal voltages (surge voltage, static

electricity, pulse voltage, etc.) shall not exceed

the rated DC voltage.

1-2. Influence of over voltage

Over voltage that is applied to the capacitor may

result in an electrical short circuit caused by the

breakdown of the internal dielectric layers.

The time duration until breakdown depends on the

applied voltage and the ambient temperature.

2. Use a safety standard certified capacitor in a power

supply input circuit (AC filter), as it is also necessary to

consider the withstand voltage and impulse withstand

voltage defined for each device.

Typical Voltage Applied to the DC Capacitor

(E: Maximum possible applied voltage.)

DC Voltage

DC Voltage+AC

AC Voltage

Pulse Voltage

E

0

E

0

E

0

E

0

!Caution