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SR217C104GAT Datasheet(PDF) 6 Page - AVX Corporation

Part No. SR217C104GAT
Description  Multilayer CeramicLeaded Capacitors
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Maker  AVX [AVX Corporation]
Homepage  http://www.avx.com
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SR217C104GAT Datasheet(HTML) 6 Page - AVX Corporation

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4
The Capacitor
CERAMIC
LAYER
ELECTRODE
TERMINATE
EDGE
TERMINATE
EDGE
END
TERMINATIONS
ELECTRODES
MARGIN
basic characteristics into more easily specified classes. The
basic industry specification for ceramic capacitors is EIA
specification RS-198 and as noted in the general section
it specifies temperature compensating capacitors as Class
1 capacitors. These are specified by the military under
specification MIL-C-20. General purpose capacitors with
non-linear temperature coefficients are called Class 2
capacitors by EIA and are specified by the military under
MIL-C-11015 and MIL-C-39014. The new high reliability
military specification, MIL-C-123 covers both Class 1 and
Class 2 dielectrics.
Class 1 – Class 1 capacitors or temperature compensating
capacitors are usually made from mixtures of titanates
where barium titanate is normally not a major part of the
mix. They have predictable temperature coefficients and
in general, do not have an aging characteristic. Thus they
are the most stable capacitor available. Normally the
T.C.s of Class 1 temperature compensating capacitors are
C0G (NP0) (negative-positive 0 ppm/°C). Class 1 extended
temperature compensating capacitors are also manufac-
tured in T.C.s from P100 through N2200.
Class 2 – General purpose ceramic capacitors are called
Class 2 capacitors and have become extremely popular
because of the high capacitance values available in very
small size. Class 2 capacitors are “ferro electric” and vary in
capacitance value under the influence of the environmental
and electrical operating conditions. Class 2 capacitors
are affected by temperature, voltage (both AC and DC),
frequency and time. Temperature effects for Class 2
ceramic capacitors are exhibited as non-linear capacitance
changes with temperature.
TC TOLERANCES
(1)
Capacitance
in pF
NP0
N030
N080
N150
N220
N330
N470
N750
N1500
N2200
-55°C to +25°C in PPM/°C
10 and Over
+30
+30
+30
+30
+30
+60
+60
+120
+250
+500
-75
-80
-90
-105
-120
-180
-210
-340
-670
-1100
+25°C to +85°C in PPM/°C
10 and Over
±30
±30
±30
±30
±30
±60
±60
±120
±250
±500
Closest
MIL-C-20D
CG
HG
LG
PG
RG
SH
TH
UJ
NONE
NONE
Equivalent
EIA Desig.
C0G
S1G
U1G
P2G
R2G
S2H
T2H
U2J
P3K
R3L
(1) Table 1 indicates the tolerance available on specific temperature characteristics. It may be noted that limits are established on the basis of measurements at
+25°C and +85°C and that T.C. becomes more negative at low temperature. Wider tolerances are required on low capacitance values because of the effects of
stray capacitance.
Table 1: EIA Temperature Compensating Ceramic Capacitor Codes
Figure 1


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