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Disjointment and RoHS Screening Analysis

Complex modules or assemblies contain a variety of materials, some of which may be restricted substances. To determine if Br, Cr, Cd, Pb or Hg are present, it is necessary to disassemble or disjoint these systems and analyze each sub-component.

A MuAnalysis RoHS screening report identifies every sub-component of the assembly, no matter how small. ICs are taken apart and each material is tested for the presence of the five restricted elements through Energy Dispersive X-Ray spectroscopy. More analyses may be needed if Br or Cr is detected, as only certain forms of these elements are banned. As well, quantitative analysis may be needed if Pb, Hg or Cd is detected. If needed, recommendations are made for further tests or quantitative analysis.

"Member States shall ensure that, from 1 July 2006, new electrical and electronic equipment put on the market does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE). National measures restricting or prohibiting the use of these substances in electrical and electronic equipment which were adopted in line with Community legislation before the adoption of this Directive may be maintained until 1 July 2006."

Disjointment

Even simple looking assemblies, such as cables, can contain more than 10 different materials.

The plating of screws and clips can contain restricted substances.

Integrated circuits often contain more than 10 different disjointable sub-components

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