The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2001
Filed:
Mar. 30, 1998
Toshikazu Murata, Kadoma, JP;
Hiroji Noguchi, Kadoma, JP;
Sadao Kishida, Kadoma, JP;
Toshihiko Taguchi, Tokyo, JP;
Shozo Asano, Tokyo, JP;
Ryo Oishi, Tokyo, JP;
Takashi Hori, Tokyo, JP;
Other;
Abstract
A lead-free solder alloy having a relatively low melting temperature and suitable for use to solder electronic devices consists essentially of: from 7 to 10 wt % of Zn; at least one of from 0.01 to 1 wt % of Ni, from 0.1 to 3.5 wt % of Ag, and from 0.1 to 3 wt % of Cu; optionally at least one of from 0.2 to 6 wt % of Bi, from 0.5 to 3 wt % of In, and from 0.001 to 1 wt % of P; and a balance of Sn. Another such lead-free solder alloy consists essentially of: from 2 to 10 wt % of Zn; from 10 to 30 wt % of Bi; from 0.05 to 2 wt % of Ag; optionally from 0.001 to 1 wt % of P, and a balance of Sn. These solder alloys have a tensile strength of at least 5 kgf/mm,and at least 10% elongation.