Hybrid lead-free solder wire
US10328533B2 · kind B2 · utility
0Cited by
6References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 4, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Oct 4, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C12/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A braided solder wire rope includes a first alloy including Bi—Ag, Bi—Cu, Bi—Ag—Cu, or Bi—Sb; and the second alloy including Sn, In Sn—Ag, Sn—Cu, Sn—Ag—Cu, Sn—Zn, Bi—Sn, Sn—In, Sn—Sb or Bi—In, such that the second alloy controls an interface reaction chemistry with various metallization surface finish materials without interfering with a high temperature performance of the first alloy. The first alloy may have a solidus temperature around 258° C. and at least the first alloy of the first wire and the second alloy of the second wire may be braided together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.