RoHS certification

Introduction to ROHS Certification

RoHS is a mandatory standard established by EU legislation, and its full name is the "Restriction of Hazardous Substances" directive. This standard has been officially implemented since July 1, 2006, mainly used to standardize the material and process standards of electronic and electrical products, making them more conducive 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 (note: the correct Chinese name for PBDE refers to polybrominated diphenyl ethers, which is an incorrect statement), from motor and electronic products, and specifically stipulates that the lead content cannot exceed 0.1%.

ROHS Directive No. 2011/65/EU
The general European RoHS 2011/65/EU requires testing for 6 items, and the directive takes effect as the ROHS directive.
The RoHS testing items for non-metallic materials include lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr6+), polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs), totaling 6 items.

The ROHS testing items for metal materials include lead (Pb), cadmium (Cd), mercury (Hg), and hexavalent chromium (Cr6+), totaling four items.


 

ROHS New Standard ROHS2.0

RoHS 2.0 testing item 2011/65/EC directive changed to RoHS 10 items

Lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr6+), polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs), dibutyl phthalate (DBP), n-butyl benzyl phthalate (BBP), 2-hexyl hexyl phthalate (DEHP), hexabromocyclododecane (HBCDD).

If there is no clear requirement to do ROHS ten items, it is generally assumed to be non-metallic materials or ROHS six items.

 

Products covered by the ROHS directive

The RoHS directive covers a wide range of products, including almost all electronic, electrical, medical, communication, toy, security information and other products. It not only includes complete products, but also includes the components, raw materials and packaging used in the production of complete machines, which is related to the entire production chain.

 

Classification of ROHS certification

ROHS certification is divided into:

1. ROHS chemical testing: suitable for single material components or products with very simple materials

2. ROHS testing+scanning: suitable for products with complex materials, where the ROHS compliance of the entire machine's components is unknown and requires testing or investigation of the entire machine

3. ROHS scanning: suitable for products with very complex materials and limited testing budgets

4. ROHS integration: Suitable for situations where there are many materials and all machine components have ROHS testing reports. Low cost and fast cycle.

 

Exemption status of ROHS certification

ROHS certification does not require all electronic products to meet the requirements of the directive for the content of several toxic and harmful substances, as some product processes may contain large amounts of mercury or lead. This has led the European Union to also stipulate that some products can be exempted from ROHS testing requirements. The following are some EU exempted products:

1. The mercury content in compact fluorescent lamps shall not exceed 5 milligrams per lamp;
2. The mercury content in ordinary straight fluorescent lamps shall not exceed:
-10mg/lamp in salt phosphate straight fluorescent lamp
-5 milligrams per lamp in a triphosphate straight fluorescent lamp with a normal service life
-Long lasting service life of 8 milligrams per lamp in triphosphate straight fluorescent lamps
3. Mercury content in special purpose straight fluorescent lamps;
4. Mercury content in other lighting fixtures not specifically mentioned in this appendix;
5. Lead content in glass of cathode ray tubes, electronic components, and fluorescent tubes;
6. The lead content in alloy elements of steel is less than 0.35%, the lead content in alloy elements of aluminum is less than 0.4%, and the lead content in alloy elements of copper is less than 4%;
7. Lead in high melting temperature solder (i.e., lead content in tin lead solder alloys exceeding 85%);
--Lead in solder used for servers, storage, and storage array systems; Lead in solder used in network infrastructure equipment for exchange, signal and transmission, as well as telecommunications network management;
--Lead in electronic ceramic components (e.g. piezoelectric ceramics);