KEMET®
APPLICATION NOTES FOR MULTILAYER CERAMIC CAPACITORS
EFFECT OF FREQUENCY
IMPEDANCE VS FREQUENCY
+0.2
+0.1
0
0.20
0.10
0.0
100
10
.001µF
.01µF
%∆C
-0.1
%DF
-0.2
100
1
1K
10K
100K
1M
10M
Figure 8.
Frequency - Hertz
Capacitance & DF vs Frequency - C0G
0.1
0.01
+5
0
10.0
7.5
5.0
2.5
0.0
0.001
0.1
1
10
100
1,000
%DF
Figure 10.
Frequency - MHz
%∆C
-5
Impedance vs Frequency for C0G Dielectric
-10
-15
100
10
100
1K
10K
100K
1M
10M
0.1µF
.01µF
Figure 9.
Frequency - Hertz
Capacitance & DF vs Frequency - X7R & Z5U
1.0 µF
1
0.1
EFFECT OF TIME
0.01
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
X7R
0.001
0.1
1
10
100
1,000
Figure 11.
Frequency - MHz
Impedance vs Frequency for X7R Dielectric
Z5U
100
10
0.1µF
1
10
100
1000
10K
100K
1.0 µF
Figure 13. Typical Aging Rates for X7R & Z5U
1
0.1
0.01
0.001
0.1
1
10
100
1,000
Figure 12.
Frequency - MHz
Impedance vs Frequency for Z5U Dielectric
KEMET Electronics Corporation, P.O. Box 5928, Greenville, S.C. 29606, (864) 963-6300
39
KEMET [ KEMET CORPORATION ]
