Manufacturing method of full tantalum shell tantalum electrolytic capacitor and capacitor

Abstract

The invention relates to a manufacturing method of a full tantalum shell tantalum electrolytic capacitor and the capacitor. The capacitor is sealed by a cylindrical metal tantalum shell, has a hermetically sealed structure and is a monolithic capacitor. The capacitor is characterized in that the capacitor is the capacitor assembled by bolts. The method comprises the following steps of: firstly, preparing full tantalum insulators with bolts, wherein the bolts are made of metal tantalum pipes, a tantalum wire passes through the center of each bolt, and insulation glass powder is sintered between the tantalum wires and the tantalum bolts to play insulation action; secondly, inversely placing the bolts on a fixture, covering a tantalum cover with six apertures on six protuberant pins of each bolt, and welding and fusing the apertures of the tantalum cover and the six pins of the bolt with a laser welding machine or an argon arc welding machine to complete the full tantalum insulators; andfinally, loading a plurality of assembled tantalum anodes and cathodes into the cylindrical metal tantalum shell, welding the anodes and the tantalum wires in the bolts, welding the cathodes and the tantalum shell, and a PTFE gasket for fixing and thus obtaining the bolt-connected full tantalum shell tantalum electrolytic capacitor.

Description

technical field [0001] The invention relates to a preparation method and device of an electronic component, in particular to a method for manufacturing an air-tight all-tantalum shell tantalum electrolytic capacitor with a bolt installation method and the capacitor. Background technique [0002] Tantalum capacitors are electrolytic capacitors processed with pure tantalum powder as the anode material. The advantages of tantalum capacitors are that they have stable electrical properties, and they are the products that are small in size and can achieve large capacitance among all capacitors. Tantalum capacitors come in a wide variety of shapes and are readily manufactured as small and chip components suitable for surface mounting. Adapted to the needs of the current electronic technology automation and miniaturization development. Tantalum electrolytic capacitors currently produced mainly include sintered solids, foil-shaped wound solids, and sintered liquids. Among them, sint...

AI Technical Summary

Problems solved by technology

Combined tantalum capacitors are generally box-type structures, which are equipped with multiple axially led tantalum electrolytic capacitors, which are still relatively large and require a large space when installed on a circuit board, which is not conducive to the further miniaturization of electronic equipment

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