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Content chemical restriction / Standards Pertaining to Procurement Restrictions
NEC's Response to Hazardous Substances (RoHS) Directive
NEC has taken the actions below in response to the European Union's prohibition of 6 substances (RoHS Directive) including lead, mercury, and cadmium in electrical and electronic products.
Limit on the procurement of materials containing the substances regulated by the RoHS Directive
NEC is requesting its suppliers to completely phase out materials containing the substances regulated by RoHS in products supplied. NEC's policy is to avoid the procurement of parts, materials, and products that contain the regulated substances.
RoHS Directive Compliance Activities
NEC has conducted a survey of products to check RoHS Directive compliance. The aim of the survey is to determine whether products contain any of the six designated substances prohibited by the RoHS Directive and to replace these substances if found. The survey also checks whether purchased parts and materials contain substances prohibited by the RoHS Directive and the thermal resistance of these parts. Nonconforming parts or products—parts or products with substances exceeding allowable levels—found from the survey were targeted for replacement. NEC has also been focusing on changing to the use of lead-free solder in electronic parts connection and printed wiring board assembly. A major challenge in this area is to ensure that the electronic parts being soldered have a high enough thermal resistance to withstand the high melting point of lead-free solder.
Compliance check via analysis and measurement
NEC selects high-risk parts and obtains analysis data from suppliers to verify compliance with the RoHS Directive. Compliance is also checked by analyzing and measuring these parts. Fluorescent X-ray analysis systems have been installed in NEC Group manufacturing plants for a final compliance check.
Example of replacement
- Procurement of parts and materials containing PBDE and PBB has been banned since 1997, so other flame retardants are used.
- Hexavalent chromium plating in the treatment of steel sheets and plates is being substituted by trivalent chromium plating, organic film, nickel plating and stainless steel.
- Lead solder is being replaced by lead-free solder,
- Pigments and paints have been changed to materials that do not contain lead, cadmium or hexavalent chromium.
- *RoHS : Restriction of the use of certain Hazardous Substances in electrical and electronic equipment
Standards Pertaining to Procurement Restrictions for the Inclusion of Chemical Substances in Products
Products(*1) delivered to NEC shall fulfill the Standards Pertaining to Procurement Restrictions for the Inclusion of Chemical Substances in Products. The Standards restricts usage of certain chemicals in products by Japanese laws, RoHS Directive, etc, and will revise periodically to comply with a trend of ANNEX(*2) of RoHS Directive and other laws in other countries. All suppliers are requested to watch the latest Standards of NEC. Thank you in advance for your kind cooperation.
- (*1) Some products are exempted this Standards because of their specific usage or performance. For further details, please contact the purchaser in NEC.
- (*2) ANNEX lists certain parts and products exempted from RoHS Directive by scientific reason and will be amended once in 4 years at least.