Tin and Gold Plating Process.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
A process used for plating a substrate in which the etching of the substrates copper cladding is terminated early leaving a thin layer of copper. Resist material is then selectively placed upon this thin layer of copper in such a manner that will result in those areas of the circuit to be electroplated being connected. Etching is then resumed to completion, resulting the electrical isolation of those portions of the circuit that are not to be electroplated. Gold electroplating followed by electro-less tin plating of the remainder of the circuit can then be performed followed by a final etching to remove the electrical shorts. Author
- Coatings, Colorants and Finishes
- Metallurgy and Metallography