European Union issued before and after the 2002/95/EC Directive on ROHS regulations
Lead mercury hexavalent chromium polybrominated biphenyls (ethers), etc. Each of which may not exceed 1000 PPM (mg/kg) Cadmium is not allowed to exceed 100 PPM
Materials are divided into metal: glass ceramics, etc.
Nonmetal is divided into: paint, plastic, but also seconds, PCB boards and other flammable materials.
Regulation method for random inspection One point veto system. That is, all materials and components must comply with this standard.
Environmentally friendly products are only products that comply with laws and regulations. Must be products inside the harmful substances are in line with international requirements are called environmentally friendly products.
And the plastic parts have to do the halogen test.
The halogen-free electrical and electronic products industry is mainly to limit the use of halogenated flame retardants in plastics, PCB boards, that is, restrictions on bromine, chlorine
So the discussion of halogens in electronic products is actually a discussion of the two elements of bromine and chlorine.
Halogen refers to fluorine,
chlorine,
bromine,
iodine,
(astatine) as radioactive substances, the general products do not contain, not restricted.
According to EN 61249-2-21 and IEC 61189-2 2006 standards
Halogen-free copper-clad PCBs require Bromine<900ppm Chlorine<900ppm The sum of the two shall not exceed 1500PPM
(the standard tries to epoxy substrate requirements, and therefore it is considered that the calculation of this limit does not include the weight of copper molds)
(the standards try to epoxy substrates, and therefore it is not included in the calculation of this limit).
The halogen content of PCB substrates, plastics and solder resists is tested according to the standards BS EN 14582: 2007,
IEC61189-2 2006, i.e., the samples are combusted with oxygen bomb (oxygen), absorbed with absorbent solution, and then put into the ion chromatograph (IC) to test for F, Cl, and Br. The samples are processed with EPA3052B. With ICP-OES test I.
The direction of halogen-free is the trend.