Title :
Nanotechnology for lead-free PWB final finishes with the Organic Metal
Author :
Wessling, Berhard ; Kenny, Jim
Author_Institution :
Enthone, Taiwan
Abstract :
For the first time, a thin layer of only a few nano-meters has been deposited onto copper pads of printed circuit boards which provides effective protection against oxidation and preserves its solderability. The Nano layer has a thickness of nominally only 50 nm, and contains the Organic Metal (conductive polymer) and a small amount of silver. With >90% (by volume), the Organic Metal is the major component of the deposited layer, Ag is present equivalent to a thickness of 4 nm. This Organic Metal-Ag complex final finish outperforms any established surface finishes.
Keywords :
nanotechnology; organic compounds; printed circuit manufacture; surface finishing; synthetic metals; conductive polymer; copper pads; lead-free PWB final finishes; nano layer; nanotechnology; organic metal; printed circuit boards; solderability; surface finish; Copper; Environmentally friendly manufacturing techniques; Lead; Nanotechnology; Oxidation; Polymers; Printed circuits; Protection; Silver; Surface finishing;
Conference_Titel :
Microsystems, Packaging, Assembly and Circuits Technology Conference, 2009. IMPACT 2009. 4th International
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4341-3
Electronic_ISBN :
978-1-4244-4342-0
DOI :
10.1109/IMPACT.2009.5382243