RoHS is a mandatory standard established by EU legislation. Its full name is the "Restriction of Hazardous Substances" (Restriction of Hazardous Substances). This standard has been officially implemented on July 1, 2006. It is mainly used to standardize the material and process standards of electronic and electrical products, making them more beneficial to human health and environmental protection.
The purpose of this standard is to eliminate six substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers in electrical and electronic products, and stipulates that the lead content cannot exceed 0.1%.
ROHS2.0 New Revised Directive (EU) 2015/863
On June 4, 2015, the European Union officially issued the RoHS 2.0 revised directive (EU) 2015/863, which officially included DEHP, BBP, DBP, and DIBP in the list of restricted substances in Appendix II. So far, there are ten compulsory controlled substances in Appendix II.
The following are the upper limit concentrations or exemptions for lead stipulated in RoHS:
1.Alloy (upper limit concentration):
Less than 3500ppm in steel alloy
Less than 4000ppm in aluminum alloy
Less than 40000ppm in copper alloy;
2. Glass (exempt): cathode ray tubes, electronic components, fluorescent tubes
3. Solder melted at high temperature (exemption): tin-lead solder containing more than 85% lead
4. Electronic ceramic original parts (exempt): piezoelectric ceramics
