Patent ID: 6906427
Filing Date: 2005-06-14
Classification: C23C,C25D,H01L,Y10T

Abstract:
1. An electronic circuit part which is formed by electrically connecting an electrode section of an electronic circuit element and an electronic section of an electronic circuit substrate, wherein the connection is formed by using a laminated conductive fine particle provided with a conductive metal layer on the surface of a spherical elastic base particle by electroless plating and electroplating and, further on the surface of the conductive metal layer, a low-melting-point metal layer, the conductive metal layer comprises a plurality of metal layers, the low-melting-point metal layer is formed by at least one element having a melting point of not more than 260° C. selected from the group consisting of tin, lead, bismuth, silver, zinc, indium, and copper, and the electrical connection is formed by a plurality of the laminated conductive fine particles per each connecting section at connecting sections between the electrode section of the electronic circuit element and the electrode section of the electronic circuit substrate.