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SA105C473KAR 数据表(PDF) 5 Page - AVX Corporation |
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SA105C473KAR 数据表(HTML) 5 Page - AVX Corporation |
5 / 84 page 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 spec- ification 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 specifica- tion MIL-PRF-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- PRF-39014. The new high reliability military specification, MIL- PRF-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 manufactured 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 capac- itance value under the influence of the environmental and elec- trical 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. Figure 1 EIA Temperature Compensating Ceramic temperature characteristics in accordance with EIA-198. |
类似零件编号 - SA105C473KAR |
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