ROHS COMPLIANT CIRCUIT BOARDS
KINGSIGNAL'S ROHS COMPLIANT CIRCUIT BOARDS
RoHS, or the Restriction of Hazardous Substances, focuses on six specific materials that should no longer be used, or should have limited use in printed circuit boards:
- Lead
- Mercury
- Cadmium
- Hexavalent chromium
- Polybrominated biphenyls
- Polybrominated diphenylether
Of the above list, most of us would immediately identify the first few but the last two on the list are fire retardants that are specific to plastic. It also includes information on four different classes of phthalates.
The Max concentration amount is applied to the use amounts per product and it is determined by the weight of Homogenous material in your PCBs.
Types Of PCB Solder Mask Colors
Circuit boards that are RoHS compliant are vital because the electronics that incorporate such PCBs will at some time find their way to a dump or garbage recycling facility. RoHS PCBs have subsequently done away with the compile of risky materials that contaminate our planet’s dumpsites. They also safeguard the persons who assemble your circuit board.
MCL is one of the leading lead-free printed circuit board manufacturers and we make sure to follow the RoHS compliance of reducing exposure to the employees during manufacturing or recycling.
RoHS Restricted Materials | |
Banned Substance | RoHS LIMIT: MCV* PPM |
Lead (Pb) | 1000 |
Mercury (Hg) | 1000 |
Cadmium (Cd) | 100 |
Hexavalent Chromium (Cr+6) | 1000 |
Polybrominated Biphenyl (PBB) | 1000 |
Polybrominated Diphenyl Ether (PBDE) | 1000 |
Identification of RoHs Boards
One of the significant aspects of becoming an organization that follows the RoHS compliance is that it has to accurately label the printed circuit boards and other material that meets or follows these guidelines. Like any other RoHS PCBs, we would rather offer you as much documents as possible so you are sure that the materials you are using are appropriate and harmless.
With regard to circuit boards that are compliant with RoHS, this will comprise the RoHS Certificate of Conformance to each shipment and the packaging of all relevant items will bear the RoHS/Pb-Free labels.
RoHs Compliant Surface Finishes and Materials
ROHS and lead free circuit boards with various finishes are also available from MCL without the compliance being an issue. The available choices of surface finish help one continue to meet the necessary requirements and remain safe. Some of the finishes available to customers include:
Surface Finishes | Shelf Life | Co-Planarity |
ENIG | 12+ Months | Yes |
Immersion Silver | 6-12 Months | Yes |
Immersion Tin | 3-6 Months | Yes |
Lead Free HASL | 12+ Months | Moderate |
OSP | 6-12 Months | Yes |
Substrate materials include a variety of Isola, Polyclad Rogers, Getek and Nelco products, for varied electrical performances and loss rates. Most RoHS-compliant PCBs can use multiple options from each of these lists.
CONTACT US
For customers who require new products with complex circuit boards and have tight release schedules, we provide technology and expertise from prototype to production. You can contact us through the methods below to discuss your project with our technical experts immediately. We will be in touch within 24 Reply within hours.
If you already have documentation for your PCB or PCBA related needs, please submit a quick quote for a free evaluation.