Solid electrolytic capacitor and method for preparing the same

Abstract

A solid electrolytic capacitor and manufacturing method, in which an oxidation-resistant coating layer configured to surround the surface of a terminal reinforcing material underlies a capacitor element. The solid electrolytic capacitor includes a capacitor element having a positive polarity internally and having one end to which an anode wire is inserted; a cathode leading-out layer; a pair of terminal reinforcing materials coupled with both bottom sides of the capacitor element; an oxidation resistant coating layer surrounding the surface of the pair of terminal reinforcing materials; a mold part surrounding the outer periphery of the capacitor element, while exposing the other end of the anode wire, the other side of the cathode leading-out layer, and the lower surfaces of the pair of terminal reinforcing materials; and anode and cathode terminals formed on both sides of the mold part and the lower surfaces of the terminal reinforcing materials.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2011-0005001 filed on Jan. 18, 2011, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a solid electrolytic capacitor and a method of manufacturing the same, wherein an anti-oxidation coating is located below the capacitor element to prevent oxidation of the terminal reinforcement material. Background technique [0004] Generally, a solid electrolytic capacitor is one of the components used to store electrical energy and block direct current from alternating current. Among such solid electrolytic capacitors, tantalum capacitors are mainly manufactured. [0005] Tantalum capacitors are used in application circuits with narrow voltage ratings, including general industrial equipment. In particular, tantalum capacitors are often used to reduce noise in circuits or portable comm...

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Problems solved by technology

The heat thus generated affects the capacitor element 11 via the anode wire 12 and damages the thermally vulnerable capacitor element 11

[0016] Such thermal shock applied to the capacitor element 11 destroys the dielectric, leading to deterioration of product characteristics or causing product defects, which in turn increases the production cost of solid electrolytic capacitors

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