KEMET®
APPLICATION NOTES FOR MULTILAYER CERAMIC CAPACITORS
TABLE 1
EIA TEMPERATURE CHARACTERISTIC CODES
FOR CLASS I DIELECTRICS
EFFECT OF TEMPERATURE
Significant Figure
of Temperature
Coefficient
Multiplier Applied
to Temperature
Coefficient
Tolerance of
Temperature
Coefficient *
0.20
0.10
0.0
+0.2
+0.1
%∆C
PPM per
Letter
Multi-
plier
Number
Symbol
PPM per
Letter
0
-0.1
-0.2
Degree C
Symbol
Degree C
Symbol
%DF
0.0
0.3
0.9
1.0
1.5
2.2
3.3
4.7
7.5
C
B
A
M
P
R
S
T
-1
-10
-100
-1000
-100000
+1
0
1
2
3
4
5
6
7
8
9
30
60
G
H
J
K
L
-55 -40 -20
0
20
40
60
80
100
120125
120
250
500
1000
2500
Figure 3.
Temperature °C
Capacitance & DF vs Temperature - C0G
M
N
+10
+100
+1000
+10000
U
* These symetrical tolerances apply to a two-point measurement of
temperature coefficient: one at 25°C and one at 85°C. Some deviation
is permitted at lower temperatures. For example, the PPM tolerance
for C0G at -55 is +30 / -72 PPM.
+20
+10
0
8.0
6.0
%∆C
4.0
2.0
0.0
-10
-20
TABLE 2
%DF
EIA TEMPERATURE CHARACTERISTIC CODES
FOR CLASS II & III DIELECTRICS
-60
-40 -20
0
20
40
60
80
100 120 140
Figure 4.
Temperature °C
Low Temperature
Rating
High Temperature Maximum Capacitance
Rating Shift
Capacitance & DF vs Temperature - X7R
Degree
Celcius
Letter
Symbol Celcius
Degree
Number
Symbol
Letter
Symbol
Percent
+10C
-30C
-55C
Z
Y
X
+45C
+65C
+85C
+105C
+125C
+150C
+200C
2
4
5
6
7
8
9
1.0%
1.5%
2.2%
3.3%
4.7%
A
B
C
D
E
F
P
R
S
T
+20
0
8.0
6.0
4.0
2.0
0
%∆C
7.5%
-20
-40
-60
10.0%
15.0%
22.0%
22/-33%
22/-56%
22/-82%
%DF
-10
-20
-30
-40
-50
-60
-70
-80
U
V
0
Figure 5.
Temperature °C
Capacitance & DF vs Temperature - Z5U
36
KEMET Electronics Corporation, P.O. Box 5928, Greenville, S.C. 29606, (864) 963-6300
KEMET [ KEMET CORPORATION ]
