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The capacitance value measured at the frequency of 1 kHz is about 10% less than the 100/120 Hz value. Therefore, the capacitance values of electrolytic capacitors are not directly comparable and differ from those of film capacitors or ceramic capacitors, whose capacitance is measured at 1 kHz or higher.
The electrical values of electrolytic capacitors with non-solid electrolyte changes over the time due to evaporation of electrolyte. Reaching specified limits of the parameters the capacitors will be count as "wear out failure". Electrolytic capacitors with non-solid electrolyte age as the electrolyte evaporates.
The electrical values of electrolytic capacitors with non-solid electrolytes change over time due to evaporation of the electrolyte. Reaching specified limits of the electrical parameters, the capacitors counts as "wear out failure". The graph shows this behavior in a 2000 h endurance test at 105 °C.
A tantalum electrolytic capacitor is an electrolytic capacitor, a passive component of electronic circuits. It consists of a pellet of porous tantalum metal as an anode , covered by an insulating oxide layer that forms the dielectric, surrounded by liquid or solid electrolyte as a cathode .
The E3 series is rarely used, [nb 1] except for some components with high variations like electrolytic capacitors, where the given tolerance is often unbalanced between negative and positive such as +50% −30% or +80% −20%, or for components with uncritical values such as pull-up resistors.
Polymer tantalum electrolytic capacitors have ESR values that are approximately only 1/10 of the value of tantalum electrolytic capacitors with manganese dioxide electrolyte of the same size. By a multi-anode technique in which several anode blocks are connected in parallel in one case, the ESR value can be reduced again.
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