RoHS is a mandatory standard established by EU legislation. Its full name is "Restriction of Hazardous Substances" (Restriction of Hazardous Substances). The standard has been officially implemented on July 1, 2006, and is mainly used to standardize the material and process standards of electronic and electrical products, making it more conducive to human health and environmental protection. The purpose of this standard is to eliminate lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers in electrical and electronic products (note: the correct Chinese name of PBDE refers to polybrominated diphenyl ethers, which is a false statement ) There are 6 substances in total, and it is stipulated that the lead content should not exceed 0.1%.
RoHS directive
The European Parliament and the European Commission issued the "Waste Electrical and Electronic Equipment Directive" (referred to as the "WEEE Directive") and the "Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive" in their "Official Gazette" on February 13, 2003. (Referred to as "RoHS Directive")
The "RoHS Directive" and "WEEE Directive" stipulate that there are 102 kinds of products in ten categories that are included in the management of hazardous substances restriction and scrap recycling. The first seven categories of products are my country's main export electrical products. Including 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 implanted or infected products), monitoring and control equipment ,vending machine.
RoHS scope: only for new products put on the market from July 1, 2006. Including household incandescent lamps and light sources.
Should not violate special directives or regulations concerning safety and health requirements——Vehicle ELV, Automotive Directive; Battery Directive, 91/157/EEC,93/86/EEC&98/101/EC
Excludes: medical equipment or monitoring equipment (WEEE Directives 8, 9); repair spare parts that were put on the market before July 1, 2006; and reusable products that were originally put on the market before July 1, 2006.
RoHS targets all electrical and electronic products that may contain the above six hazardous substances in the production process and raw materials, mainly including: white household appliances, such as refrigerators, washing machines, microwave ovens, air conditioners, vacuum cleaners, water heaters, etc., black household appliances, such as audio and video products , DVD, CD, TV receiver, IT products, digital products, communication products, etc.; electric tools, electric electronic toys, medical electrical equipment.
1. Lead (Pb) Examples of using this substance: solder, glass, PVC stabilizer;
2. Examples of mercury (Hg) (mercury) use of this substance: thermostats, sensors, switches and relays, light bulbs;
3. Examples of the use of cadmium (Cd): switches, springs, connectors, shells and PCBs, contacts, batteries;
4. Hexavalent chromium (Cr 6+) Examples of using this substance: metal anti-corrosion coating;
5. Examples of polybrominated biphenyls (PBBS) using this substance: flame retardants, PCBs, connectors, plastic shells;
6. Examples of polybrominated diphenyl ethers (PBDE) using this substance: flame retardants, PCBs, connectors, plastic shells;
RoHS testing principles
According to the requirements of the EU WEEE & RoHS directives, domestic qualified third-party testing agencies separate products according to materials and use different materials to test for hazardous substances. Generally speaking:
Metal materials need to test four harmful metal elements such as (Cd cadmium/Pb lead/Hg mercury/Cr6+hexavalent chromium)
In addition to checking these four harmful heavy metal elements, plastic materials also need to be tested for brominated flame retardants (polybrominated biphenyls PBB/polybrominated diphenyl ethers PBDE)
At the same time, packaging materials of different materials also need to be tested separately for heavy metals in packaging materials (94/62/EEC)
The following is the upper limit of the concentration of six hazardous substances stipulated in RoHS:
Cadmium: less than 100ppm
Lead: less than 1000ppm
Less than 3500ppm in steel alloy
Less than 4000ppm in aluminum alloy
Less than 40000ppm in copper alloy
Mercury: less than 1000ppm
Hexavalent chromium: less than 1000ppm
The RoHS directive covers the electronic and electrical products listed in the catalog below AC1000V and DC1500V:
1. Large household appliances: refrigerators, washing machines, microwave ovens, air conditioners, etc.
2. Small household appliances: vacuum cleaners, electric irons, hair dryers, ovens, clocks, etc.
3. IT and communication equipment: computers, fax machines, telephones, mobile phones, etc.
4. Civil equipment: radios, televisions, video recorders, musical instruments, etc.
5. Lighting appliances: fluorescent lamps other than household lighting, lighting control devices
6. Power tools: electric drills, lathes, welding, sprayers, etc.
7. Toys/entertainment, sports equipment: electric cars, video game consoles, automatic gambling machines, etc.
8. Medical equipment: radiotherapy apparatus, electrocardiogram tester, analytical instrument, etc.
9. Monitoring/control devices: smoke detectors, thermostats, factory monitoring and control machines, etc.
10. Vending machines not only include the complete product, but also the parts, raw materials and packaging used in the production of the complete machine, which are related to the entire production chain.
RoHS test method
Send related products to professional laboratories for testing. The products should be divided into single materials and uniform materials for testing, including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE) After waiting for the six hazardous substances to meet the requirements of the RoHS directive, if they meet the requirements, a RoHS conformity report and certificate will be obtained.
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