Title: A Recent Innovation in Corrosion Control for Electronics
Authors: Barry L. Rudman, Christophe Chandler and Bill Westerfield
Citation: Tri-Service Corrosion Conference, 1997
Keywords: Electrostatic Discharge, Volatile Corrosion Inhibitors
Abstract: Packaging materials for the electronics industry have become very specialized.
The choice among the materials typically involves balancing several factors, such
as the cost of the materials, the cost of the components and the sensitivity of the
components to be packaged. Typically corrosion protection is sacrificed in favor
of protection from electrostatic discharge (ESD). If corrosion and ESD protection
was desired the choice has been to use a metallized static dissipative barrier bag
with a desiccant. This option is usually very expensive and had several
drawbacks. A main disadvantage was that these types of films are not transparent.
It was therefore desired to develop a new packaging material that was
transparent and offered both corrosion and ESD protection. This new material was
not to be a compromise between the two types of protection, but rather a
combination of the best of both materials.
Pros/Cons: This paper discusses about the problems associated with the packaging materials
and a standard test method was developed to characterize both the dissipative
properties and corrosion inhibiting ability of films. Finally from the results it is
found that hybrid films seems to provide both static dissipation and corrosion
control among the other films employed. Thus VCIs in the hybrid is an ideal
choice for protection of electronic components. Further research in this area will
lead to the innovation of newer materials, which may have better properties than
the present ones.