■In accordance with European Union (EU) and REACH regulations, copper foil manufacturers are eliminating the use of arsenic acid in their copper foil manufacturing processes. REACH aims to limit occupational exposure of Arsenic metal (As) and Arsenic Trichloride (AsCl3). This legislation is making it difficult to use arsenic compounds in the manufacturing of copper foil, ultimately banning the purchase of arsenic within the EU altogether. RO4835T™ laminates currently supplied by Rogers Corporation are impacted by this mandate. Beginning in Q1 2024, the standard electrodeposited copper foil that Rogers Corporation currently purchases to manufacture RO4835T™ laminates will be replaced by a new copper foil grade compliant with EU regulations.
■Our team has conducted extensive testing and validation of the new foil's performance and the Arsenic Free ED foil for RO4835T™ material complies with current specification requirements. There may be a detectable difference in the RF performance of the arsenic-free foil due to slightly increased insertions loss above 20GHz for 1 oz. and ½ oz. foils while the Design Dk for ½ oz. 1 oz. foils are within the same range of values. Also, all other data measured falls within expected parameters, affirming the consistency of performance across both foil types.
■We always recommend our customers assess the suitability of Rogers' materials for their specific needs. To help with this evaluation, we have included property comparison charts for both the existing and the updated RO4835T™ laminates sourced from our Rogers Suzhou factory. Please note that samples of the new version can be provided upon request.

Brand of Product：	ROGERS
Part#：	RO4835T™ More Part#
Product Category：	Laminate More
Application：	More
Data Type：	PCN/EOL More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	June 2023
Version Number：
Data Encoding：
Data Size：	718 KB
Effective Date：	June 2023
Type of Change：	Laminate change