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Ceramic electronic component and manufacturing method thereof

A technology of electronic components and manufacturing methods, which is applied to components, electrical components, circuits, etc. of fixed capacitors to achieve the effect of suppressing the generation of whiskers

Active Publication Date: 2021-11-09
TAIYO YUDEN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is known that in an external electrode in which a tin layer is formed on a copper layer, whiskers growing like mustaches from the tin layer tend to occur.

Method used

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  • Ceramic electronic component and manufacturing method thereof
  • Ceramic electronic component and manufacturing method thereof
  • Ceramic electronic component and manufacturing method thereof

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Embodiment Construction

[0054] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0055] In the drawings, X-axis, Y-axis, and Z-axis orthogonal to each other are appropriately shown. The X-axis, Y-axis, and Z-axis are common to all drawings.

[0056] 1. Multilayer ceramic capacitors 10

[0057] 1.1 Overall structure

[0058] Figure 1~3 It is a figure which shows the multilayer ceramic capacitor 10 which concerns on one Embodiment of this invention.

[0059] figure 1 It is a perspective view of the multilayer ceramic capacitor 10 of the present invention. figure 2 is the edge of the multilayer ceramic capacitor 10 figure 1 A cross-sectional view of line A-A'. image 3 is the edge of the multilayer ceramic capacitor 10 figure 1 The cross-sectional view of the B-B' line.

[0060] Multilayer ceramic capacitor 10 has ceramic main body 11 , external electrode 14 and second external electrode 15 .

[0061] The ceramic theme 11 has a hexahedral s...

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Abstract

The present invention provides a ceramic electronic component for suppressing the generation of whiskers in an external electrode having a tin layer as the outermost layer. A ceramic electronic part includes a ceramic body and external electrodes. The above-mentioned external electrodes are formed along the surface of the ceramic body, and have a tin layer dispersed with voids as an outermost layer. In this structure, the compressive stress applied to the tin layer due to various reasons is relieved by the pores dispersed in the tin layer. Therefore, in this ceramic electronic component, generation of whiskers in the tin layer can be suppressed.

Description

technical field [0001] The present invention relates to a ceramic electronic component having external electrodes and a method of manufacturing the same. Background technique [0002] As electronic equipment becomes lead-free, lead-free ceramic electronic components mounted on electronic equipment are also sought. In addition, there is a demand for improvement in mountability of ceramic electronic components using tin-based lead-free solders. In order to meet this requirement, it is effective to use a tin layer as the outermost layer of the external electrodes of the ceramic electronic component. [0003] The external electrodes of general ceramic electronic components contain copper layers. However, it is known that whiskers growing like mustaches from the tin layer tend to occur in external electrodes in which a tin layer is formed on a copper layer. Once the whiskers detach from the tin layer and fall onto the circuit board, they become the cause of short circuits on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/232H01G4/30H01G4/12
CPCH01G4/232H01G4/2325H01G4/30H01G4/12H01G4/1227H01G4/1236H01G4/1245H01G4/306H01G4/248
Inventor 富泽祐寿赤石和香惠
Owner TAIYO YUDEN KK