Pan Pacific Symposium Conference Proceedings


Authors: Kenneth L. Smith, Drew Hession-Kunz, and Donald W. Sackett, Ph.D.
Company: Innov-X Systems, Inc.
Date Published: 1/31/2007   Conference: Pan Pacific Symposium

Abstract: The RoHS Directive is, at the most basic level, a straight-forward environmental regulation. In the way that lead has been banned from use in gasoline or paint, this RoHS Directive (Reduction of Hazardous Substances) enacts a process to reduce the amount of specific materials in electronics waste stream. For electronics manufacturers and distributors, European Union RoHS Directives pose a particularly difficult challenge. The Directives require compliance at the homogeneous component level. However, most electronic products & components are complex, multi-layered, multi-component, multi-material assemblies. Complete RoHS testing via the Directives would require disassembly, dissection, & destruction of the product to homogeneous levels. The cost, time, and throughput required in a production process must be set against the need to test statistically significant quantities of product. These screening methods maintain high levels of product throughput while substantially reducing the risk of shipping non-compliant product. The technical details of the screening methods, application to the Directives and review of recent European enforcement guidelines will be presented. A risk management strategy has been developed whereby testing is guided by historical use of restricted substances. Several portable XRF screening methods have been developed that yield high confidence PASS, FAIL guidelines. These are predominately non-destructive test methods. Key words: RoHS, Portable XRF, Pb Solders

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