Solid tantalum electrolytic capacitor and manufacturing method thereof

TLDR: In this article, a flat cuboid capacitance body is used for a solid Ta electrolytic capacitor and a preparation method consisting of a Ta core, an insulator and a metal shell, and a flat cathode dual-head leading wire.

Abstract: The invention relates to a solid Ta electrolytic capacitor and a preparation method thereof, comprising a flat cuboid capacitor body which consists of a Ta core, an insulator and a metal shell, and a flat cathode dual-head leading wire and a flat anode dual-head leading wire which are arranged in a C-shape and respectively led out of the anode and cathode of the two ends of the body; in order to prepare the capacitor, firstly, the Ta core in flat cuboid shape is prepared; the C-shaped flat cathode dual-head leading wire and the anode dual-head leading wire are assembled with the Ta core; subsequently, resin is poured so as to form the capacitor by natural solidification. The electrolytic capacitor adopting the structure reduces the surface contact resistance of the product and has obviouseffect on reducing the high frequency ESR value of the product and improving the high frequency characteristic of the product as the capacitor body structure is changed into flat cuboid and the surface area of a Ta block is increased; after two ends of the leading wire are bent to parallel flat dual-head leading wire, most of the generated inductance can be counteracted, and the frequency range of the inductance appearing in the electronic circuit is delayed.