What Is Rohs And What Should We Pay Attention To?

　 　 RoHS It is from European Union One item of legislation Mandatory standard Its full name is Directive on the restriction of the use of certain hazardous ingredients in electrical and electronic equipment. (Restriction of Hazardous Substances). The standard will be formally implemented in July 1, 2006, mainly for standardizing the materials and process standards of electrical and electronic products, making it more conducive to human health and environmental protection. The purpose of the standard is to eliminate 6 substances, such as lead, mercury, cadmium, six valence chromium, polybrominated biphenyl and polybrominated diphenyl ethers in electrical and electronic products, and stipulate that the content of lead should not exceed 0.1%. The main sources of lead involved are the following categories.

The basic contents of the EU ROHS and WEEE Directive: the European Parliament and the European Commission issued the "waste electrical and electronic equipment" directive in February 13, 2003 (the "WEEE directive") and the "directive on the use of certain hazardous substances in the electronic and pneumatic equipment" (the RoHS directive), the RoHS directive and the WEEE directive, which stipulate that there are ten categories and 102 categories of products in the official gazette of the European Union parliament and the European Commission. The first seven products are the main export electrical products in China. They include large household appliances, small household appliances, information and communication equipment, consumer products, lighting equipment, electrical and electronic tools, toys, leisure and sports equipment, medical equipment (except for implanted or infected products), monitoring and control instruments, vending machines.

The RoHS directive restricts the use of the following six types of hazardous substances 1 mercury (mercury). Examples of using this substance are: temperature controller, sensor, switch and relay, and bulb 2 lead. Examples of using this substance: solder, glass, PVC stabilizer 3 examples of cadmium use: switch, spring, connector, shell and PCB, contact, battery 4 chromium (six valence), examples of using this substance: metal corrosion coating more than 5 bromide biphenyl (PBB) example: flame retardant, PCB, connector, plastic shell more than 6 bromo two phenyl ether (PBDE) example of using this substance: flame retardant, PCB, connector, plastic shell test principle:

According to the European Union WEEE&RoHS directive, AOV is to split products according to materials, and detect harmful substances separately with different materials. Generally speaking:

Metal materials need to test four kinds of harmful metals such as (Cd cadmium /Pb lead /Hg mercury /Cr6+ six valent chromium). In addition to checking these four harmful heavy metals, plastic materials need to detect brominated flame retardants (polybrominated biphenyl PBB/ polybrominated dimethyl ether PBDE). At the same time, different materials packaging materials also need to carry out the testing of heavy metals for packaging materials respectively (94/62/EEC) below is the upper limit of six harmful substances in RoHS:

Cadmium: less than 100ppm lead: less than 1000ppm steel alloy less than 2500ppm aluminum alloy less than 4000ppm copper alloy less than 40000ppm mercury: less than 1000ppm six chromium: less than 1000ppm.

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