Would one IC in a 8umax package which contains lead cause the whole product to fail compliance?
RoHS bans anything over a .1% concentration of lead in a homogeneous material. The Department of Trade and Industry (DTI) in the UK in a draft guidance document describes homogeneous as follows: “‘Homogeneous material’ means a material that cannot be mechanically disjointed into different materials.” An IC contains multiple homogeneous materials. Detailed analysis is required to determine the concentration of a restricted substance in any material. Here is a link to the document referenced: http://www.dti.gov.uk/sustainability/weee/RoHS_Regs_Draft_Guidance.pdf.
