Quick Turnaround Lead-Free PCB Assembly Service CEM1 CEM3 Rigid Flex Printed Circuit Board
Lead-free PCB Assembly Description
Lead-free PCB assembly refers to the process of manufacturing printed circuit boards and assembling electronic components without the use of lead-based materials, in compliance with regulations such as RoHS and REACH. According to these regulations, the lead content of solder paste used for PCB assembly must be within 0.1%.
For a truly lead-free PCB assembly process, the lead-free requirement (Pb < 0.1%) extends throughout the entire EMS manufacturing process. This includes electronic components, PCB copper-clad laminates (CCL), PCB inks, surface finishes, solder paste, enclosures, packaging bags/boxes, and all equipment/devices/jigs used during the fabrication process.
By eliminating lead from the assembly process, lead-free PCBs minimize environmental impact and health risks associated with lead exposure, while still ensuring reliable and high-performance electronics.
Advantage Of Lead-Free PCB Assembly Service
PCBA manufacturers are subject to RoHS standards, which require replacing traditional lead-based solders with lead-free alternatives for RoHS-compliant PCB assembly.
By eliminating the use of hazardous lead-based materials, our lead-free PCB assembly process significantly reduces the environmental footprint of electronic products. This approach not only complies with RoHS and other environmental regulations but also contributes to a greener and healthier planet for future generations.
Lead-free PCB assembly typically uses solder alloys that are free of lead, such as tin-silver-copper (SAC) alloys. Other materials may include lead-free surface finishes, fluxes, and conformal coatings designed for compatibility with lead-free processes.
PCB Assembly Service Specification
| Items | PCBA capacity |
| Product name | SMT circuit board manufacturer custom electronic assembly pcb pcba |
| Assembly details | SMT and Thru-hole, ISO SMT and DIP lines |
| Testing on products | Testing jig/mold , X-ray Inspection, AOI Test, Functional test |
| Quantity | Min quantity : 1pcs. Prototype, small order, mass order, all OK |
| Files needed | PCB : Gerber files(CAM, PCB, PCBDOC) |
| Components : Bill of Materials(BOM list) |
| Assembly : Pick-N-Place file |
| PCB Panel Size | Min size : 0.25*0.25 inches(6*6mm) |
| Max size : 1200*600mm |
| Components details | Passive Down to 0201 size |
| BGA and VFBGA |
| Leadless Chip Carriers/CSP |
| Double-sided SMT Assembly |
| Fine BGA Pitch to 0.2mm(8mil) |
| BGA Repair and Reball |
| Part Removal and Replacement |
| Component package | Cut Tape, Tube, Reels, Loose Parts |
| PCB+ assembly process | Drilling-----Exposure-----Plating-----Etaching & Stripping-----Punching-----Electrical Testing-----SMT-----Wave Soldering-----Assembling-----ICT-----Function Testing-----Temperature & Humidity |
PCB Assembly PCB Materials
FR4: The most commonly used Material for PCB.
FPC: Flexible Printed Circuit Board(or flex PCB) is a thin insulating polymer film that conductive circuit patterns are printed on, the most advantage for the FPC board is flexibility, which allows it to be the connection within a compact space or parts that need to bent. Also check the differences between Rigid-flex PCB and Flex PCB with stiffener.
Aluminum Board: The Aluminum PCB has good heat dissipation than FR4 PCB, which makes it suitable for boards that need quick/large heat dissipation, such as the LED Boards.
Rogers: When advanced electrical properties and performance are critical, such as Dielectric, dielectric constant, Rogers PCB boards would be the solution, normally only for professional high-frequency electronic engineers.
PCB Assembly Case
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