Printed Circuit Board Fabrication Ordinary Board Conformal Coating
FR4
Printed Circuit Board Fabrication Description:
1. Provide mechanical support for fixing and assembling various
electronic components such as integrated circuits, realize wiring,
and electrical connection or electrical insulation between various
electronic components such as integrated circuits, and provide
required electrical characteristics.
2. Provide solder mask graphics for automatic welding, and provide
identification characters and graphics for component insertion,
inspection, and maintenance.
3. After the electronic equipment adopts printed boards, due to the
consistency of similar printed boards, manual wiring errors are
avoided, and automatic insertion or mounting of electronic
components, automatic soldering, and automatic detection can be
realized, which ensures electronic products. quality, improve labor
productivity, reduce costs, and facilitate maintenance.
Printed Circuit Board Fabrication Parameters:
| Layer | 2-64 |
| Thickness | 0.3-6.5mm |
| Copper Thickness | 0.3-12 oz |
| Min Mechanical Hole | 0.1mm |
| Min Laser Hole | 0.075mm |
| HDI | 1+n+1,2+n+2,3+n+3 |
| Max Aspect Ratio | 20:01 |
| Max Board Size | 650mm*1130mm |
| Min Width/Space | 2.4/2.4mil |
| Min Outline Tolerance | ±0.1mm |
| Impedance Tolerance | ±5% |
| Min PP Thickness | 0.06mm |
| Bow &Twist | ≤0.5% |
| Materials | FR4, High-Tg FR4, Rogers, Nelco, RCC, PTFE, M4, M6, TU862, TU872 |
| Surface Finished | HASL, HASL Pb Free Immersion Gold/Tin/Silver Osp, Immersion
Gold+OSP |
| Special Capability | Gold Finger Plating, Peelable, Carbon ink |
Printed Circuit Board Fabrication Introduction:
The creator of PCB is the Austrian Paul Eisler, who first used
printed circuit boards in radios in 1936. In 1943, Americans mostly
used this technology in military radios, and in 1948, the United
States officially recognized this invention for commercial use.
Printed circuit boards have only been widely used since the
mid-1950s. Printed circuit boards are found in almost every
electronic device. If there are electronic parts in a device, they
are all mounted on PCBs of various sizes. The main function of the
PCB is to make various electronic components form the connection of
the predetermined circuit, which plays the role of relay
transmission. It is the key electronic interconnection of
electronic products and is known as the "mother of electronic
products".
