Products FAQs
Selected Category：Aluminum Electrolytic Capacitors
The aluminum electrolytic capacitor case is connected with a cathode terminal and an unstable resistance component, which can result in equivalent potential that is unstable.
A potential difference may occur due to the presence of an oxide film with high withstand voltage properties between the case and the anode terminal.
The S-parameters (scattering parameters) of aluminum electrolytic capacitors refer to circuit network parameters used to indicate the transmission/reflection power characteristics of high-frequency circuits and electronic components.
The resin-based mounts of surface mount-type aluminum electrolytic capacitors are either a standard structure or a vibration-resistant structure. These products can be differentiated by the eighth digit (A or G) of the parts number.
Developments in electronic equipment have been remarkable in recent years. We have seen significant advancements in downsizing as well as performance and reliability improvements for active components such as integrated circuits, semiconductor elements, and electron tubes used in the circuits of electronic equipment, passive parts such as L/C/R, and functional and mechanical components.
Capacitance
The larger the surface area of an electrode is, the higher the capacitance (capacity for storing electricity) is. For aluminum electrolytic capacitors
When a capacitor is applied with a voltage with the frequency changed, the impedance (Z), a factor of preventing the AC current changes as shown in (Fig. 14). This is the impedance-frequency characteristics of the capacitor.
The lifetime of aluminum electrolytic capacitors is largely dependent on the application conditions. Environmental factors include temperature, humidity, atmospheric pressure and vibrations. Electrical factors include operating voltage, ripple current and chargedischarge.
For designing the device with aluminum electrolytic capacitors, a failure rate and useful life are necessary to be considered for their reliability.
Capacitors are passive components. Among the various kinds of capacitors, aluminum electrolytic capacitors offer larger CV product per case size and lower cost than the others.
The following is an explanation of the precautions associated with using aluminum electrolytic capacitors in devices that will be used at high-altitude, including in mountainous regions and on airplanes.
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