Printed circuit board manufacturers are in high demand across various industries. Regulations and quality standards must be in place to ensure the safety of products and ensure that they are of acceptable quality for usage in the workplace. So, it is possible to get a variety of printed circuit board certifications to demonstrate a business’ ability to generate high-quality printed circuit boards while simultaneously complying with all applicable rules and regulations.
Suppose you are looking for a reliable USA PCB electronic assembly. In that case, you must go for a RoHS PCB or UL certified PCB manufacturer, as they create PCB assemblies by keeping certain standards of quality in mind. In this article, we will highlight the benefits of such certifications and their meaning.
What is RoHS Compliance?
“RoHS” stands for Restriction of Hazardous Substances; it is also known as “RoHS 1,” “RoHS 2,” and “RoHS 3,” all of which originate from the European Union and all of which have been implemented since 2002. Chemicals often present in electrical and electronic products are subject to the RoHS directive’s restrictions on their usage (EEE).
RoHS-compliant PCBs need to be manufactured ecologically responsible in today’s consumer electronics market. Restrictions on Hazardous Substances (RoHS), which stands for Restriction on Hazardous Substances, prohibit the use of hazardous materials, notably in electrical and electronic parts. Directive 2002/95/EC was the designation given by the European Union in 2002 to the RoHS directive.
RoHS PCB Manufacturer is prohibited under the RoHS regulation from using elements that are detrimental to the environment in their products. On July 1, 2006, the Act came into full force. Components and assemblies that can be detached from the rest of their bulk focus on this directive. Lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), notably Penta PBDE and Octa PBDE, cannot be contained in electrical or electronic equipment entering the EU market.
Why are RoHS Compliant PCBs Required?
Electronic trash comprises dangerous chemicals such as heavy metals and other chemical compounds with virtually no chemical control. The situation continues when the acidic rains dissolve Lead and other hazardous chemicals. This polluted rainfall would be put into the water bodies. Thus, drastically inflicting damage to aquatic life and human well-being. RoHS PCB Manufacturer keeps everything in mind before developing any kind of assembly about environmental safety and disposes of the electronic waste and its effect.
What is a UL certification, and what does it mean?
UL stands for the Underwriters Laboratory for new items and technology, an independent testing institution established to ensure their safety. UL now maintains a global network of product safety stations.
Manufacturers seeking UL certification must submit their PCBs to stringent testing to determine their dependability and fire safety. UL796, the standard for PCBs, and UL94, the standard for assessing the flammability of plastics, are the key standards for printed circuit boards. If the circuit board’s safety or flammability is in question, it must be marked with the UL label prior to installing any equipment. Buyers need to know that there are varying levels of quality.
RoHS-Compliant PCB’s Impact
The EU banned polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), notably Penta PBDE and octa PBDE, in new electrical and electronic equipment beginning on July 1, 2006.
Manufacturing with No Lead
The lead-free programme impacts the supply chain, even though laminates are not prohibited in their usage of flame retardants. As a result, no surface finish may be utilised by the PCB maker, and no lead solder can be used during assembly. For lead-free soldering, the raw PCB has to be able to endure a higher temperature for soldering. In terms of long-term stability, new laminates require higher thermal-mechanical qualities to sustain lead-free production.
Heavy metals like Lead and Mercury have an unfavourable impact on the human body organ and may affect the whole central nervous system. These metals also impair the functioning of kidneys and the reproductive system. Higher intake of Lead from polluted water would impair the response time of bodily organs such as fingers, wrists, and ankles. RoHS activities will bring crucial relief for all of us. Compliance with RoHS rules by PCB producers or ul certified PCB manufacturers will boost our battle against climate change and global warming.
Factors Affecting the Selection of RoHS-Compliant Materials
A RoHS PCB Manufacturer must maintain the long-term dependability of the PCB even when using a base material compliant with RoHS guidelines. At higher temperatures, the dependability of lead-free PCB is unquestionably worse than that of lead-based PCB. The following are the most important features to keep in mind while deciding on the foundation material.
- Td: Temperature at which Decomposition Begins
As a rule of thumb, Td is considered to be when 5% of the initial mass is lost to decomposition. Even if the Td value is large, the peak temperatures in lead-free assembly can exceed the beginning decomposition points, even if the mass is just 5%. Because the Td value is just 5 per cent, it cannot ensure that the product will perform. Conversely, if the starting temperature of decomposition is high enough, a low Td by the 5% criterion is not always a bad thing.
- Tg: Temperature at which Glass Begins to Break Down into Crystals
To put it another way, the temperature at which polymers shift from a stiff, glassy state to a softer and more deformable state is known as the glass transition temperature (Tg). The rate at which a material expands vs temperature changes when the Tg is surpassed. There is a graph of CTE and expansion above. This mid-Tg FR-4 material has a higher decomposition temperature, making it more compatible with lead-free assembly than typical FR-4 material.
- Temperature Expansion Coefficients or CTEs
There is a significant difference in the CTE values of resin systems that are above and below Tg. Plated vias are stressed when the Z-axis expands. The higher lead-free assembly temperatures for a given material lead to a greater total expansion. Inorganic fillers in certain sophisticated, lead-free materials reduce CTE levels. Reliability at component and layer interface at RoHS PCB manufacturer is also dependent on the X and Y axis CTEs.
- Absorption of Liquids and Gases
Thermal cycling can induce voiding or delamination if moisture is absorbed. Despite initial lead-free assembly testing, moisture absorption may cause faults in PWBs that have been stored in an uncontrolled environment. This is something to keep in mind when comparing PWB materials and designs.
- Time for a Delamination Procedure
Adhesion and decomposition temperature are factors in this attribute. Thermal expansion and moisture absorption might also have an impact on outcomes. Additionally, the handling of copper surfaces in multilayer PWBs is crucial.
How to Verify Materials for RoHS Directives?
The RoHS directives indicate that the maker needs to give a certificate of compliances, but not explicitly which technique should be utilised. The X-ray fluorescence measuring tools are effective to check the materials. The equipment performs material analysis and coating thickness, two critical tests concerning WEEE/RoHS requirements. When it comes to determining the concentrations of various elements in a substance, this method is non-destructive, rapid, and straightforward. An X-ray beam is used to analyse the product’s response signal.
Circuit Boards that Comply with RoHS or UL Certification
The amount of electrical devices that end their lives in an open junkyard is steadily increasing. Our landfills are polluted due to the waste reclamation process that these items go through after being discarded. There are no hazardous compounds or substances in PCBs that comply with RoHS. As the need for environmentally friendly circuit boards grows, the demand for lead-free or RoHS-compliant PCBs has increased to a certain level.
Similarly, the demand for ul certified PCB manufacturers has increased to have a safe working e environment for workers without fear of fire. On the other hand, plating RoHS compliant finishes, such as white tin immersion without Lead and electroless-nickel immersion gold (ENIG), soft bondable gold, and full-body white tin plating (OSP), will prevent PCB makers from using leaded surface finishes.
Before employing lead-free finishes, RoHS-compliant PCB producers must make internal adjustments to RoHS-compliant PCBs’ design, material selection, and component assembly. PCB manufacturers should also pay greater attention to the finished product’s shelf life, working environment, and storage.
Lead-free substrate materials, inks and solder masks, surface finishes and other chemicals must be used throughout the production process of printed circuit boards (PCBs). Separate components, solder connections, and heat sinks must also be RoHS compliant before PCB assembly can begin, as must the assembly itself.
UL Certified PCB Manufacturers In Shenzhen
Founded in 2011, headquartered in Shenzhen. After ten years of development, there are six PCB factories in China. We can provide one-stop PCB assembly and manufacturing services. Whether you need low-volume customized PCB services or high-volume PCB production, we can provide you with high-quality UL certified PCB services.
PCB Assembly Service
- One-Stop Solution
- PCB Assembly Prototype
- High Mix Low Volume PCBA
- High Volume Low Mix PCBA
- Turnkey PCB Assembly
- Consignment PCB Assembly
- ODM PCBA Solution
PCB Manufacturing Service
- PCB Prototype
- Standard PCBs
- Automotive PCBs
- Consumer Electronics PCBs
- Industrial Control PCBs
- Instrument PCBs
- Medical PCBs
- Security Monitor PCBs
- Telecom PCBs
EASHUB is proud of its high quality and good service. With 10 years of PCB design and production experience. Our team can always quickly find reasonable solutions for PCB design, optimization and production.
Due to the strict PCB manufacturing control, our products have passed various industry certifications, such as ISO9001, UL, ROHS, TS16949, ts13485, etc.
Moreover, we can consistently deliver with the fastest speed and the best quality due to a large inventory of various electronic components. Although the competition in the PCB industry is becoming stronger and stronger, we permanently reduce the PCB cost as much as possible by upgrading the equipment and optimizing processing steps. If you have PCB-related requirements, feel free to contact us.
Shenzhen Huaqiu Electronics was founded in 2011 and is headquartered in Shenzhen. The company focuses on developing PCB services such as PCB smart factory, PCB e-commerce, component e-commerce, component storage centre and SMT / PCBA processing plant. There are two factories in Shenzhen and Jiangxi to complete the strategic layout of industrial interconnection in an all-round way:
- DFM analysis
- Program development
- PCB manufacturing
- E-commerce components
- SMT patch
Huaqiu electronics has been committed to becoming a highly reliable multilayer PCB manufacturer through purchasing high-precision and advanced equipment and strictly selecting high-quality raw materials such as class a copper-clad laminate and solar ink;
The company has passed ISO9001, ISO14001, IATF16949 (automobile certification), UL multilayer board, CQC, GB-T29490 and other quality management systems.
Kingwang electronics, Founded in 1993, is a leading UL certified PCB manufacturer in Shenzhen, with five production bases in China. As one of the largest PCB suppliers in the world, the company can provide customers with PCB solutions for various types and applications.
The company’s products cover common circuit boards, flexible circuit boards, metal substrates, soft and hard combination boards, high-density interconnection boards, high-layer circuit boards, RF circuit boards, buried copper blocks, class carrier boards and engineering and design services. Their PCB can be widely used in automobiles, communication, computer, intelligent terminal, power supply, industrial control, medical treatment, consumer and other application.
The company also focus on intelligent manufacturing and fine management. As a result, it has the advantages of a short production cycle, high efficiency, high yield and strong traceability through optimizing the process to provide customers with high-quality and efficient PCB services.
To continuously maintain competitiveness in the PCB industry, there will have subtle characteristics of production alienation in different factories. Through innovation, technical development and upgrading around customers’ needs as far as possible, the company will reduce the defect rate and the cost of PCB to improve the technical capacity of PCB production further and maintain strong competition.
Huatong Computer Co., Ltd(COMPEQ)
Huatong Computer Co., Ltd. was founded in 1973 and headquartered in Taiwan, China. At the initial stage of its establishment, it mainly produced single and double-layer PCB. Now it can mass-produce multilayer UL certified PCBs to meet the needs of customers.
With the development of its business, COMPEQ has set up a production base in Huizhou, a city around Shenzhen, to provide customers with various flexible PCB and low-volume PCB manufacturing services.
COMPEQ can provide the production and manufacturing of FPC and Rigid-Flex PCB, HLC, multilayer circuit board, HDI and other products, and SMT printing services.
Common PCB manufacturing can produce PCBs with a minimum thickness of 40um, line spacing of 50 / 50um and minimum through-hole size of 150um since 2014. you can choose materials that include standard FR4, high-temperature FR4 and halogen-free FR4, HASL, hard gold + OSP, immersion silver, etc.
For high-density PCB, you can choose any layer of HHDI stack up with a minimum thickness of 45um. If you have higher requirements, you can also contact us.
Click here to know more professional PCB manufacturers in Shenzhen
UL certified Automotive PCB Manufacturers in China
Olympic Country Co,Ltd:
Olympic Country Co,Ltd was established in 1985. The company provides multilayer thick PCB boards, high-precision interconnection HDI, FPC, flexible and rigid boards (including HDI) and metal substrates. Ranked 17th in the global automotive PCB supplier list in 2019, Tesla is its largest automotive customer. The annual production capacity of conventional PCB is about 2.5 million square meters, and the annual production capacity of HDI and multilayer boards is about 2 million square meters.
Eashub is also one of the automotive PCB manufacturers, which can provide these items:
- HDI (High-Density Interconnect) boards
- ordinary double-sided, multilayer PCBs
- high microwave frequency PCBs
- thick copper, metal base/core PCBs
- flexible boards
- rigid-flex boards, etc.
Due to the increasing demand for automotive electronic PCBs, Eashub keeps up with market development opportunities and actively develops automotive electronic PCBs.
We have specialized in the research and development and production of automotive electronics products for many years and have obvious advantages in high-power, high-current products and high-precision PCBs.
The advantages of EASHUB in automotive PCB rapid proofing:
- Express service: The normal delivery time for the single and double board is 1-2 days, and we can provide 12 and 24 hours of urgent service for customers and 24 hours of urgent service for four and six-layer panels. Quality assurance, delivery on time.
- Affordable price: Affordable small batch orders.
- PCBA one-stop service: In response to the diverse needs of customers, in addition to PCB manufacturing and PCBA services, we can also offer PCB design optimization, SMT placement, and component purchasing as the main business providing customers with PCB one-stop service.
DSBJ was established in 1998 and is the world’s leading FPC and one of the PCB manufacturers. To meet the growing demand for automotive PCBs, it can provide an annual output of 400,000 square meters of fine circuit flexible circuit boards in the Suzhou base and provide high-speed, high-frequency and high-density printed circuit boards in the Zhuhai base. The company has become a Tesla FPC supplier and cooperates with many new energy vehicle manufacturers.
Wus Printed Circuit:
Wus Printed Circuit was established in 1992 and focused on the R&D, design and production of printed circuit boards. Its main products are 14-38-layer PCB boards, medium and high-end automotive boards and industrial equipment PCB boards, which can be widely used in communication equipment, automotive, industrial equipment, medical equipment, microwave radio frequency, and semiconductor chip testing and other applications.
In the future, it will strengthen the R&D and production of HDI PCB technology to provide customers with more high-frequency and high-speed PCB needs for automobiles.
Founded in 1993, KINWONG as a famous UL certified PCB manufacturer can provide these PCBs:
- multilayer boards,
- thick copper boards,
- high-speed boards,
- metal-based circuit boards,
- double-sided/multilayer flexible circuit boards,
- high-density flexible circuit boards,
- HDI boards,
- rigid-flex boards,
- special material PCB, etc.,
It was also one of the top 10 PCB suppliers in the world in 2020. PCB products are widely used in communication, intelligent terminals, computer and network, consumer, automotive, industrial control, medical equipment, and other fields.
Click here to know more UL certified Automotive PCB Manufacturers in China
UL Certified PCB Manufacturers In California
Founded in 1992, bancor, LLC is a customized PCB manufacturer serving in California and covering the United States with about 10-49 employees. With 25 years of PCB manufacturing experience, the company has helped more than thousands of partners related to PCB applications.
If you can’t get customized low-volume PCB production service in other large companies worldwide, don’t worry. You can try to contact Bencor, LLC, which can quickly help you realize customized PCB design and manufacturing services.
The company has a complete tracking process, providing you with the best tips from the initial PCB concept construction to the final PCB production finish.
various certifications for PCB manufacturing, such as:
Consistent with UL and IPC requirement
Why can bancor, LLC manufacture high-quality PCB? That is because the company strictly follows all kinds of inspections and operations required for PCB production, from electronic and visual inspection to all types of PCB testing.
Bencor, LLC can provide up to 16 layers of PCB multi-layer manufacturing service. For your PCBs, you can choose FR-4, CEM-3, aluminum-based, copper-based, high-frequency board, high Tg, Rogers, etc., materials.
This company can control the thickness of PCB within a minimum of 0.3mm and a maximum of 4mm. If you want to know more information about Bencor, LLC, you can visit the company’s website or contact us to help you.
Giltronics Associates Inc.
Founded in 1978, Giltronics associates Inc. has a long history in the PCB industry. The company is a leading contract UL certified PCB manufacturer in California， which focuses on ECM and EMS contract PCB manufacturing services.
Getronics associates Inc. in Los Angeles can provide SMD technology, printed circuit board assembly, OEM, and ODM services to a wide range of industrial markets, including artificial intelligence (AI), virtual reality (VR), aerospace industry, automobile industry, medical industry, audio, robotics industry, sensor technology, Bluetooth and wireless technology.
Getronics associates Inc. has won many awards in the competition in the PCB industry. So if you want to find a reliable PCB contract manufacturer, the company may be a good choice for you.
The company can provide the 2-30 layers of PCB for PCB layer manufacturing. The minimum linear width, minimum line space, min space between pad to pad can reach 3mil, and the maximum size of the finished board can reach 23inch * 35inch.
Click here to know more PCB manufacturers in California
A constant increase in the number of RoHS-compliant PCB manufacturers or ul certified PCB manufacturers are occurring because of the growing demand from customers and stricter government laws regarding RoHS compliance or fire safety concerns. Environmentally conscious manufacturing of PCB with safety measures towards fire is undergoing a tremendous change throughout the world of technology.
Moreover, by such certifications, we can identify which manufacturer has a concern for external safety as well as employees’ safety. Workers’ health risks will be reduced due to the use of RoHS-compliant materials in production operations. As more and more consumers begin to demand lead-free products, we may expect to see an increase in green production all across the globe if all regulations are followed.
However, the lead replacement is giving a RoHS PCB manufacturer a lot of headaches. PCB producers are particularly concerned about the potential for higher processing temperatures when using lead-free alloys.