Electronic component and process for manufacturing the same
AssigneeDDK Ltd.
InventorsTomonari Ohtsuki, Yasue Yamazaki
Life of this patent
Estimating the term…
Abstract
In an electronic component provided with an electric contact(s) producing an electric conduction by contacting with a contact(s) of a second electronic component, the electric contact comprises a lead-free alloy layer containing tin and silver, and a surface layer portion of the alloy layer at least contacting with the contact of the second electronic component is a tin-rich layer having a tin content higher than that of the other portion of the alloy layer.
Claims12
An electronic component provided with an electric contact(s) producing an electric conduction by contacting with a contact(s) of a second electronic component, said electric contact comprising a lead-free alloy layer containing tin and silver, a surface layer portion of said alloy layer at least contacted with the contact of the second electronic component being a tin-rich layer having a tin content higher than that of the other portion of the alloy layer.
In a process for manufacturing an electronic component provided with an electric contact(s) producing electrical conduction by contacting with a contact(s) formed on a conductor of a substrate constituting a second electronic component, an improvement wherein a lead-free alloy layer containing tin and silver is formed on a conductor of a substrate constituting the first electronic component and subjected to a reflow treatment and then cooled at a relatively slow cooling rate to form the electric contact.
Dependencies are inferred from the claim text.