PCB Flow Chart.pdf
Products Application:
Our products are widely used in meter, medical, solar energy, mobile, communication, industrial control, power electronics,security, consum electronics, computer, automotive, aerospace, military and so on

Technology Capability:
Item | Technical Parameters |
Layers | 1-28 Layers |
Inner Layer Min Trace/Space | 4/4 mil |
Out Layer Min Trace,Space | 4/4 mil |
Inner Layer Max Copper | 4 OZ |
Out Layer Max Copper | 4 OZ |
Inner Layer Min Copper | 1/3 oz |
Out Layer Min Copper | 1/3 oz |
Min hole size | 0.15 mm |
Max.board thickness | 6 mm |
Min.board thickness | 0.2mm |
Max.board size | 680*1200 mm |
PTH Tolerance | +/-0.075mm |
NPTH Tolerance | +/-0.05mm |
Countersink Tolerance | +/-0.15mm |
Board Thickness Tolerance | +/-10% |
Min BGA | 7mil |
Min SMT | 7*10 mil |
Solder mask bridge | 4 mil |
Solder mask color | White,black,blue,green,yellow,red,etc |
Legend color | White,black,yellow,gray,etc |
Surface finish | HAL,OSP, Immersion Ni/Au ,Imm silver/SN,ENIG |
Board materials | FR-4;high TG;HighCTI; halogen free; Aluminum Bsed PCB,high frequency(rogers,isola),copper -base PCB |
Impedance control | +/-10% |
Bow and twist | ≤0.5 |
FAQ :
1. What kinds of boards can ACCPCB process?
Common FR4, high-TG and halogen-free boards, Rogers, Arlon, Telfon, aluminum/copper-based boards, PI, etc.
2. What data are needed for PCB production?
PCB Gerber files with RS-274-X format.
3. What’s the typical process flow for multi-layer PCB?
Material cutting → Inner dry film → inner etching → Inner AOI → Multi-bond→ Layer stack up Pressing → Drilling → PTH → Panel Plating → Outer Dry Film → Pattern Plating → Outer etching → Outer AOI → Solder Mask → Component Mark → Surface finish → Routing → E/T → Visual Inspection.
4. How do ACCPCB ensure quality?
Our high quality standard is achieved with the following.
1.1 The process is strictly controlled under ISO 9001:2008 standards.
1.2 Extensive use of software in managing the production process
1.3 State-of-art testing equipments and tools. E.g. Flying Probe,e-Testing, X-ray Inspection, AOI (Automated Optical Inspector) .
1.4.Dedicated quality assurance team with failure case analysis process