ESMH251VNN681MR35T

Aluminum electrolytic capacitors are a type of capacitor component with large capacitance, high voltage, high energy density, and excellent temperature characteristics. ESMH251VNN681MR35T is a high-precision aluminum electrolytic capacitor, with its wide application field and specific working principle.

Application Field

ESMH251VNN681MR35T is suitable for a variety of occasions because of its excellent performance. it is suitable for use in automotive audio systems, electronic injection systems, instrumentation, automotive windows and other occasions with high precision requirements. It is widely used in dc power supply filtering and waveform stabilization, smoothing circuits, audio-frequency filtering, and other applications.

Working Principle

Aluminum electrolytic capacitors are formed by an anode composed of a porous aluminum oxide layer and an anode foil, a cathode composed of an aluminum foil, and an electrolyte consisting of an organic solvent and an ionic compound. ESMH251VNN681MR35T Aluminum electrolytic capacitors, the core part of the capacitor is an anode formed by layers of extremely thin porous alumina dielectric membrane. When voltage is applied between the two electrodes, the ions in the electrolyte move toward the electrodes, forming an electric double layer on the surface of the anode. This layer has the characteristics of capacitance, and when the applied voltage increases to a certain value, the electric double layer collapses due to the ionic reaction between the anode and the electrolyte. This process is called anodization. The anode foil becomes porous, and the dielectric layer has a much higher dielectric constant than air. The anode foil is made of highly corrosion-resistant aluminum foil, and the surface of the electrolytic dielectric is formed in a self-contained anodic oxidation reaction. The electrolytic capacitance of aluminum electrolytic capacitors increases with the increase of the applied voltage, and the capacitance of the electrolytic capacitor decreases when it is unloaded. ESMH251VNN681MR35T aluminum electrolytic capacitors are characterized by excellent temperature characteristics and low impedance, and have a long service life.