High Precision PCB Fabrication Assembly for Wireless Charger

♦ What's PCB Fabrication?

​​PCB Fabrication​​ (or ​​PCB Manufacturing​​) is the process of transforming a circuit board design (typically provided as ​​Gerber files​​) into a physical printed circuit board (PCB). It involves multiple steps, from etching copper layers to drilling holes and applying protective coatings, resulting in a bare PCB ready for component assembly.

♦ Key Steps in PCB Fabrication​:​

1. Design & File Preparation​​

• • The process starts with ​​PCB design files​​ (Gerber, drill files, BOM).
  • Engineers verify the design for manufacturability (​​DFM check​​).

​​2. Printing the Design on Copper Clad Laminate​​

• • A ​​photosensitive film​​ is applied to a copper-clad board (usually ​​FR4​​).
  • The PCB layout is printed using UV light, transferring the circuit pattern.

​​3. Etching the Copper​​

• • The board is chemically etched (​​acid bath​​) to remove unwanted copper, leaving only the desired traces.

​​4. Drilling Holes​​

• • Precision ​​CNC machines​​ drill holes for ​​vias​​ (plated holes) and component leads.
  • ​​Laser drilling​​ is used for ​​microvias​​ in HDI (High-Density Interconnect) PCBs.

​​5. Plating & Copper Deposition​​

• • ​​Electroplating​​ adds a thin copper layer to the drilled holes, creating electrical connections between layers.
  • Additional coatings (e.g., ​​ENIG, HASL, OSP​​) may be applied for solderability.

​​6. Applying Solder Mask & Silkscreen​​

• • ​​Solder mask​​ (usually green) is added to prevent short circuits.
  • ​​Silkscreen​​ prints component labels (text, logos).

​​7. Surface Finish Application​​

• • Common finishes:
    • ​​HASL (Hot Air Solder Leveling)​​ – Traditional, cost-effective.
    • ​​ENIG (Electroless Nickel Immersion Gold)​​ – Flat surface, good for fine-pitch components.
    • ​​OSP (Organic Solderability Preservative)​​ – Simple, but less durable.

​​8. Electrical Testing & Quality Control​​

• • ​​Automated Optical Inspection (AOI)​​ checks for defects.
  • ​​Flying Probe Test​​ or ​​Bed-of-Nails Test​​ verifies electrical connectivity.

​​9. Final Cutting & Packaging​​

• • The PCB panel is ​​routed​​ into individual boards.
  • Boards are inspected and shipped for ​​PCB Assembly (PCBA)​​.

♦ ​​Types of PCB Fabrication​​:​

♦ Technical Parameters

♦ One-Stop PCBs Solution

PCB Prototype	Felx PCB	Rigid-Flex PCB	Aluminium PCB
Heavy Copper PCB	HDI PCB	High Frequency PCB	High TG PCB

♦ Advantages of DQS Team

1. On-time Delivery:

• • Owned PCBA factories 15,000 ㎡
  • 13 fully automatic SMT lines
  • 4 DIP assembly lines

2. Quality Guaranteed:

• • IATF, ISO, IPC, UL standards
  • Online SPI, AOI, X-Ray Inspection
  • The qualified rate of products reach 99.9%

3. Premium Service:

• • 24H reply your inquiry
  • Perfect after-sales service system
  • From prototype to mass production

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..