B43255A4157M

Aluminum Electrolytic Capacitors

An aluminum electrolytic capacitor (also called aluminum electro or electrolytic) is an electronic component with enhanced electrical properties, utilizing the physical properties of the formed oxide film (anodic film) from the aluminum sheet as the dielectric in a capacitor. It is used for low-frequency, relatively high capacitance values, up to tens of thousands of microfarads (thousands of thousands of picofarads). The aluminum electrolytic capacitor is used in electrical circuits, especially those that require timing control, linearity, filtering, or resonance, in addition to other more general use.

B43255A4157M aluminum electrolytic capacitor is a kind of screw-mount version of a low profile miniature type aluminum electrolytic capacitor. It features a non-solid electrolyte, which includes an aluminum case, screw terminals, a dielectric layer, an electrochemical compound, and a sleeve. The electrolytic combines the non-solid electrolyte with a high capacitance value and a low ESR, making it especially suitable for a wide range of applications including consumer electronics, automotive, industrial, semiconductor, telecom, aerospace, and medical device applications. Its range of voltage rating is 6.3V to 100V, which makes it suitable for both general utilization and high current applications.

Application Field

The B43255A4157M aluminum electrolytic capacitor is suitable for many different applications. It is especially useful for high power circuit which requires a large capacitance value and a high ESR, such as DC to AC inverters, DC motor drives, high power switch mode power supplies, and energy storage. It can also be used for energy storing applications including electrical energy storage and back- up and standby power sources. Moreover, it can be used for medical equipment, instrumentation, motor control circuit, high voltage dc filters, and automotive and industrial controls.

Working Principle

B43255A4157M aluminum electrolytic capacitor works by utilizing the principle of electrochemistry. When a voltage is applied, the atoms of the aluminum inside the case become positively and negatively charged and a thin film of oxide is generated on the aluminum foil surface. This film acts as the dielectric of the capacitor. The oxide layer interacts with the electrolyte as a reactant and the near-perfect insulating film prevents the leakage of any charge and thus, stores the energy in the capacitor. The application of voltage in the capacitor also causes electrons to migrate from the surface of the anode towards the cathode. This causes a charge to accumulate on the cathode, which further increases the capacitance of the capacitor.

The B43255A4157M aluminum electrolytic capacitor therefore has an advantage over other capacitors due to its high capacitance value and low ESR, as well as its wide range of voltage rating. It is an excellent choice for situations where high power and low ESR is required. Its low profile size also makes for easier installation in confined spaces.