Description
What is RoHS PCB
ROHS Complaint PCB, which means that your PCB must strictly follow the EU environmental protection directive to avoid the hazardous substance: lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE). The constituents still have the potential to pose a hazard to human health and the environment.
When we conduct ROHS certification for PCBs, we need to pay attention to the key points such as material composition, production processes, and supply chain management to meet the compliance with the restrictions of the EU ROHS. The below are the specific considerations:
Material Selection and Control
- Avoid using the restricted substances: PCB factory needs to make sure the raw materials (solder, inks, substrates, coatings, etc.) don’t contain hazardous substances such as lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr⁶⁺), PBB, or PBDE. Using lead-free solder and an environmental substrate.
- Supplier Qualification: It is necessary to ask the raw material suppliers to provide RoHS compliance declarations
Production Process Management
- Production Line Isolation: Don’t mix with the lead-containing production, such as shared solder pots and equipment
- Process Control: Adjust soldering temperatures for lead-free solder (10–20°C higher than leaded solder). And don’t allow to the use of restricted substances in fluxes or cleaning agents.
- Equipment Cleaning: Clean the residues to prevent historical contamination
Key Testing Items for the RoHS PCB
RoHS testing must cover homogeneous materials (i.e., indivisible single materials) in PCBs, with a focus on solder, coating, and soldermask inks. PCB factory can use XRF screening+chemical analysis (ICP-OES/GC-MS) to test.
The PCBs that FX PCB supplied are all Rohs complaints, and we commit ourselves to be a green supply chain for our customers
