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September 13, 2002
SUMITOMO BAKELITE CO., LTD.
The Company's Statement regarding the IC Package Problem
We have received reports from a few customers that electrical
shorts have occurred in IC packages which use EME molding compound using
inorganic phosphorus as a flame retardant. The following is the statement of the
Company regarding such problem:
- We have been supplying products that comply
with the applicable material specifications and pass IC manufacturers'
qualification tests. Therefore, we maintain that we have fulfilled our
responsibility as a material manufacturer.
- After receiving reports regarding the IC
package problem from our customers, we began an investigation in cooperation
with the customers. However, we have not yet identified the root cause of this
problem.
- Based on the information we have been able to
obtain so far, we can report that data developed to date indicates that the rate
at which these shorts occur is extremely low compared to the size of total sales
volume of the EME molding compound using inorganic phosphorus and that the
incidents have been confined to certain specific uses
only.
- Our molding compounds are usually supplied to
IC manufacturers. In our understanding, IC manufacturers have used our molding
compounds after having tested them using their own qualification standards based
on their own expertise relating to IC packages. In addition, we were not
provided with detailed information regarding specific applications for IC
packages or the final products containing IC packages, or environmental
conditions in which they operate, etc. We were not in a position to obtain such
information.
- However, as we place our first priority on our
customers, we have stopped manufacture and sale of the EME molding compound
which uses inorganic phosphorus and recommend the use of our alternative
compounds instead.
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