GR442QR7LB102KW01L Datasheet, PDF (138/237 Pages) Murata Manufacturing Co., Ltd. – chip monolithic ceramic capacitors

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
C02E.pdf
Oct.1,2012
!Caution
Continued from the preceding page.
2. Measurement of Capacitance
1. Measure capacitance with the voltage and the 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.
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.
Typical Voltage Applied to the DC Capacitor
DC Voltage
DC Voltage+AC
AC Voltage
Pulse Voltage
E
E
0
0
(E: Maximum possible applied voltage.)
1-2. Influence of overvoltage
Overvoltage 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.
E
0
E
0
4. Applied Voltage and Self-heating Temperature
1. When the capacitor is used in a high-frequency voltage,
pulse voltage, application, be sure to take into account
self-heating may be caused by resistant factors of the
capacitor.
1-1. The load should be contained to the level such that
when measuring at atmospheric temperature of 25°C,
the product's self-heating remains below 20°C and
surface temperature of the capacitor in the actual
circuit remains within the maximum operating
temperature.
Continued on the following page.
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