Datasheet

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Note
• Please read rating and
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CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifi cations. Therefore, please approve our product specifi cations or transact the approval sheet for product specifi cations before ordering.
146
GRM Series GJM Series GMA Series GMD Series GQM Series GRJ Series GR3 Series KRM Series KR3 Series LLA Series LLL Series LLM Series LLR Series
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Caution
5. DC Voltage and AC Voltage Characteristics
1. The capacitance value of a high dielectric constant type
capacitor changes depending on the DC voltage applied.
Please consider the DC voltage characteristics when a
capacitor is selected for use in a DC circuit.
1-1. The capacitance of ceramic capacitors may change
sharply depending on the applied voltage (see
figure).
Please confirm the following in order to secure the
capacitance.
(1) Determine whether the capacitance change
caused by the applied voltage is within the
allowed range.
(2) In the DC voltage characteristics, the rate of
capacitance change becomes larger as voltage
increases, even if the applied voltage is below
the rated voltage. When a high dielectric constant
type capacitor is used in a circuit that requires a
tight (narrow) capacitance tolerance (e.g., a time
constant circuit), please carefully consider the
voltage characteristics, and confirm the various
characteristics in actual operating conditions in an
actual system.
2. The capacitance values of high dielectric constant type
capacitors changes 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.
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-50
-40
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-10
0
10
20
30
0 0.5 1 1.5 2
AC Voltage (Vr.m.s.)
-100
-80
-60
-40
-20
0
20
0 1020304050
DC Voltage (V)
[DC Voltage Characteristics]
Sample: X7R (R7) Characteristics 0.1μF,
Rated Voltage 50VDC
[AC Voltage Characteristics]
Sample: X7R (R7) Characteristics 10μF,
Rated Voltage 6.3VDC
Capacitance Change (%)Capacitance Change (%)
6. Capacitance Aging
1. The high dielectric constant type capacitors have the
characteristic in which the capacitance value decreases
with the passage of time.
When you use high dielectric constant type capacitors in
a circuit that needs a tight (narrow) capacitance tolerance
(e.g., a time-constant circuit), please carefully consider
the characteristics of these capacitors, such as their
aging, voltage, and temperature characteristics. In
addition, check capacitors using your actual appliances at
the intended environment and operating conditions.
-40
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-10
0
10
20
10 100 1000 10000
Time (h)
Capacitance Change (%)
[Example of Change Over Time (Aging Characteristics)]
C0G (5C)
X7R (R7)
X5R (R6)
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Caution