Seen from the perspective of PCBA manufacturing, the main problem with lead-free PCB assembly is the effect on the circuit board caused by temperature rise. Rework of lead free PCB assembly is also more difficult.
Lead-Free PCB Assembly involves soldering components onto a printed circuit board (PCB) without using lead (Pb), making it RoHS compliant. Leaded solder has traditionally been used due to its excellent solderability and cost-effectiveness, with a common mix of 63% tin and 37% lead. However, lead-free solder is now widely used because lead poses significant health risks and is harmful to the environment. SAC305 (96.5% tin, 3% silver, 0.5% copper) is a popular choice for lead-free solder.
With over 16 years of experience, ESPCBA has become a trusted name in lead-free PCB assembly. Our expertise, innovation, and customer-centric approach have earned us the loyalty of clients worldwide.
Our skilled team uses lead-free technology to meet RoHS requirements and provide environmentally friendly solutions.
Our sales team offers fast, standardized, and personalized service throughout the sales process.
We offer the best prices, ensuring top-quality products without compromising on speed or service.
Lead-free PCB assembly is essential for RoHS-compliant electronics. As environmental regulations strengthen, it has become the standard in the industry. If your product will be sold in regions with strict environmental laws (such as the EU), or you prioritize health and safety, lead-free assembly is a must. Additionally, manufacturers looking to align with green production practices should opt for lead-free assembly.
Leaded solder is toxic, while lead-free solder is environmentally friendly.
Lead-free solder, such as SAC305, contains higher levels of tin, silver, and copper compared to leaded solder.
Lead-free solder requires higher temperatures (210-230°C) compared to leaded solder (180-190°C).
Lead-free solder is more expensive due to the higher cost of base materials.
Lead-free PCBs can be identified by the color of the solder joint, which tends to be darker and slightly yellow compared to the bright white of leaded solder. Lead-free solder typically contains 96% tin, 3% silver, and 0.5% copper.
Accurate control of soldering time is crucial to avoid poor contact or virtual welding.
The correct amount ensures optimal welding quality.
Proper temperature ensures effective soldering without damaging components.
Ensure all components and PCBs used are RoHS-compliant.
Key personnel must be well-trained and stable to maintain consistent quality.
ESPCBA specializes in small to medium volume lead-free PCB assembly, delivering competitive pricing without compromising on quality.
Looking for reliable SMD assembly services? At ESPCBA, we’re your trusted partner for PCB fabrication, component sourcing, and electronic manufacturing. With over 16 years of experience, we’ve provided high-quality PCBs at competitive prices to over 1,000 customers worldwide. Our company is ISO9001:2015 certified and UL listed, and every product we deliver is 100% E-tested and inspected using AOI and X-ray to meet the highest standards. Get an instant quote from our sales team today, and let us handle the rest for you.
Lead-free PCB assembly refers to the PCB assembly manufactured by a lead-free process. All materials, such as printed circuit board, components and solder, must be lead-free.
Lead-free PCB assembly is rapidly becoming the standard for PCBA manufacturing due to regulatory requirements, environmental concerns, and other reasons.
The following is a brief introduction to some processing points of the lead-free process.
1) The inspection of solder paste and PCBs:
The lead-free process requires inspection of the PCB and solder paste parameters to ensure that the lead-free materials are used.
2) Components:
Check the bill of materials first to ensure that the components are made of lead-free materials.
3) Solder paste printing:
In the step of printing solder paste, the lead-free stencil of the forming stage is placed on the circuit board and then printed with lead-free solder paste.
4) Pick and place components:
This is a pick-and-place operation, but the components used need to be identified and marked during the BOM verification phase. The machine or operator selects a labeled component and places it in a specified location.
5) Testing and packaging:
Test the solder joints in this step. Visual inspection is followed by AOI and X-ray inspection. Physical and functional tests are performed before packaging.
Both terms say the same thing: it means the assembled PCB boards are environmental friendly.
Lead free PCBA is short fro lead free printed circuit board assembly. It means PCB assembly without lead.
Improve environmental protection and ensure the sustainable development of the industry.
Significantly reduce or avoid health damage caused by using products containing lead.
Seen from the perspective of PCBA manufacturing, the main problem with lead-free PCB assembly is the effect on the circuit board caused by temperature rise. Rework of lead free PCB assembly is also more difficult.
We think the following factors are the more important ones in lead free board assembly: printed circuit board is lead free, solder bar or solder paste used in SMT assembly or PTH assembly is lead free, the whole lead free PCBA line is only prepared for lead free PCB assembly, then no lead remains in any tools or equipment.
Ready to serve you globally.
inquiry@espcba.com