Concave dual-electrode integrated chip high-voltage ceramic capacitor and manufacturing process thereof

Abstract

The invention relates to a concave dual-electrode integrated chip high-voltage ceramic capacitor and a manufacturing process thereof. The overall shape of the capacitor is a centrosymmetric concave disc, in other words, the center of the capacitor is in the shape of a disc, the outer side of the capacitor is annular, the annular portion of the outer side is thicker than the disc at the center, an outer electrode is arranged on the surface of an annular chip, an inner electrode is arranged on the surface of a disc-shaped chip, the inner electrode and a lead are welded together, and the inner electrode, the outer electrode and a ceramic medium chip are wrapped in a resin-encapsulating layer. The capacitor manufacturing process comprises the steps of manufacturing of a dual-electrode concave copper electrode chip, lead welding, coating, printing and testing. By the adoption of the concave dual-electrode integrated chip high-voltage ceramic capacitor and the manufacturing process thereof, rated capacitance and voltage strength are effectively improved, the contradiction between rated capacitance and voltage strength is effectively resolved, the size of the capacitor is reduced greatly on the premise that high capacity and high electric strength of the capacitor are guaranteed, and the requirement for miniaturization of a complete electronic machine is met.

Description

technical field [0001] The invention relates to the field of ceramic capacitors, in particular to a concave double-electrode integrated chip high-voltage ceramic capacitor and its manufacturing process. Background technique [0002] Traditional discrete components—ceramic capacitors are mainly in the form of discs. This structure is simple to form, mature in technology, easy to operate, and convenient for batch and large-scale production. But for high-voltage ceramic capacitors, the main consideration is that the withstand voltage strength and nominal capacitance are as high as possible. And the two are contradictory. Under the same conditions: the thinner the dielectric, the larger the capacitance and the lower the compressive strength, and vice versa. Traditional disc-type ceramic capacitors are relatively bulky, which is not conducive to the assembly of power devices. Contents of the invention [0003] The technical problem to be solved by the present invention is to...

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Problems solved by technology

Traditional disc-type ceramic capacitors are relatively large in size, which is not conducive to the assembly of power devices

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