|Board Material||Standard FR4: Shengyi, ITEQ, KB, GDM High TG: S1000-2, IT180|
|Surface treatment||OSP, HASL, LF-HASL, ENIG(Chem. Gold), Immersion Tin, Immersion silver, Plating hard gold, Gold fingers,Flash gold, ENEPIG|
|Tolerance||Board thickness tolerance 1.0mm: +/-0.1mm 1.0mm-2.0mm: +/-10% >2.0mm: +/-8%|
|Hole diameter tolerance PTH: +/-0.075mm NPTH:+/-0.05mm|
|Hole location tolerance: +/-0.075mm|
|Outline tolerance: < 100mm: +/-0.1mm 100mm-300mm: +/-0.15mm >300mm: +/-0.2mm|
|Technical Specification||Layers: 1-24 layers|
|Min line width/space: 0.075/0.075mm|
|Min hole: 0.15mm (mechanical drilling) 0.1mm (laser drilling)|
|Min pad ring: 0.1mm|
|Max copper thickness: 12oz|
|Max board size:1-2 layers: 635 X 1100mm Multilayers: 500 X 1100mm|
|Board thickness: 2-layers: 0.2-7.0mm Multi-layers: 0.4-7.0mm Inner layers: 0.1mm|
|Board warpage: ≤1°|
|Min solder mask bridge: 0.08mm|
|Aspect Ration: 8:1|
|Plugging Vias capability: 0.2-0.8mm|
|Au, Ni thickness control: 1. Chem gold: Au:1-10u” 2. Gold fingers: Au:1-150u” 3. Flash gold: Au:1-10u” 4. Hard gold:Au:1-150u” 5. Ni thickness:50-1000u” 6. ENEPIG: Au:1-8u”,Pd:2-5u|
Auto Cutting Machine
CNC Routing Machine
Auto Film Exposure
Auto Gold Immersion Line
Waste Handling 1
Waste Handling 2
Flying Probe Test
Flying Probe Test(High Speed)
What is a Printed Circuit Board2014-08-25
A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-condu...
How to Design a Printed Circuit Board2014-08-25
Printed circuit board artwork generation was initially a fully manual process done on clear mylar sheets at a scale of usually 2 or 4 times the desired size. The schematic diagram was first converted i...
Engineering Process before Manufacturing2014-08-25
PCB CAM Manufacturers never use the Gerber or Excellon files directly on their equipment, but always read them into their CAM system. PCBs cannot be manufactured professionally without CAM system. The ...
Patterning of Printed Circuit Board2014-08-25
In subtractive methods the unwanted copper is removed to leave only the desired copper pattern. In additive methods the pattern is electroplated onto a bare substrate using a complex process. The advan...
Chemical etching is usually done with ammonium persulfate or ferric chloride. For PTH (plated-through holes), additional steps of electroless deposition are done after the holes are drilled, then coppe...
Inner Layer Manufacturing2014-08-25
Inner layers are used inside multilayer PCBs. Later the inner layers are hardly recognizable from the outside of the finished PCB multi-layer. Inner Layer Automated Optical Inspection (AOI) The inner l...
Holes through a PCB are typically drilled with small-diameter drill bits made of solid coated tungsten carbide. Coated tungsten carbide is recommended since many board materials are very abrasive and d...
Solder Resist Application of PCB2014-08-25
Areas that should not be soldered may be covered with solder resist (solder mask). One of the most common solder resists used today is called LPI (liquid photoimageable). A photo sensitive coating is a...
Exposed Conductor Plating and Coating2014-08-25
PCBs are plated with solder, tin, or gold over nickel as a resist for etching away the unneeded underlying copper. After PCBs are etched and then rinsed with water, the solder mask is applied, and then...
Legend Printing of PCB2014-08-25
A legend is often printed on one or both sides of the PCB. It contains the component designators, switch settings, test points and other indications helpful in assembling, testing and servicing the cir...
Unpopulated boards may be subjected to a bare-board test where each circuit connection (as defined in a netlist) is verified as correct on the finished board. There are mainly two kinds of electrical t...
Printed Circuit Board Assembly2014-08-25
After the printed circuit board (PCB) is completed, electronic components must be attached to form a functional printed circuit assembly, or PCA (sometimes called a printed circuit board assembly PCBA)...
Protection and Packaging of PCB Assembly2014-08-25
PCBs intended for extreme environments often have a conformal coating, which is applied by dipping or spraying after the components have been soldered. The coat prevents corrosion and leakage currents ...
Circuit Properties of the PCB2014-08-25
Each trace consists of a flat, narrow part of the copper foil that remains after etching. The resistance, determined by width and thickness, of the traces must be sufficiently low for the current the c...
Materials of Printed Circuit Board2014-08-25
Excluding exotic products using special materials or processes all printed circuit boards manufactured today can be built using the following four materials: 1. Laminates 2. Copper-clad laminates 3. Re...
Multiwire is a patented technique of interconnection which uses machine-routed insulated wires embedded in a non-conducting matrix (often plastic resin). It was used during the 1980s and 1990s. Multiwi...
History of Printed Circuit Boards2014-08-25
Development of the methods used in modern printed circuit boards started early in the 20th century. In 1903, a German inventor, Albert Hanson, described flat foil conductors laminated to an insulating ...