■
Rating
1.Temperature Dependent Characteristics
1. The electrical characteristics of the capacitor can change with temperature.
1-1. For capacitors having larger temperature dependency, the capacitance may change with temperature
changes. The following actions are recommended in order to insure suitable capacitance values.
(1) Select a suitable capacitance for the operating temperature range.
(2) The capacitance may change within the rated temperature.
When you use a high dielectric constant type capacitors in a circuit that needs a tight (narrow) capacitance
tolerance.
Example: a time constant circuit., please carefully consider the characteristics of these capacitors,
such as their aging, voltage, and temperature characteristics.
And check capacitors using your actual appliances at the intended environment and operating conditions.
□
Typical temperature characteristics Char.R6 (X5R)
□
Typical temperature characteristics Char.R7 (X7R)
□
Typical temperature characteristics Char.F5 (Y5V)
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 when capacitance is high occasionally.
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 a AC circuit.
Caution
-20
-15
-10
-5
0
5
10
15
20
-75
-50
-25
0
25
50
75
100
Cap
a
ci
ta
n
ce
Cha
n
g
e
(
%
)
Temperature (
℃
)
-100
-80
-60
-40
-20
0
20
40
-50
-25
0
25
50
75
100
Cap
a
ci
ta
n
ce
Cha
n
g
e
(
%
)
Temperature (
℃
)
!
JEMCGC-4642B
12
