Process for the production of service boxes
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United States of America Patent
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Feb 11, 1997
Grant Date -
N/A
app pub date -
Oct 13, 1994
filing date -
Oct 13, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Special alloys of the kind responding to the formula of 95% Sn 5% Sb or 52% Sn 45% Pb 3% Sb having a melting point greater than 183.degree. C. are used in one of the preferred embodiments of the invention within this application as a first improvement in the welding of printed circuit boards. These alloys improve the quality of welding, as well as its influence on the long-term running of a service box, to the same as the life span of a car.
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