With the development of electronic industry,
PCB manufacturers are demanding higher and higher production requirements, and the volume is becoming smaller and smaller, and BGA type packaging is widely used. Therefore, PCB lines will be smaller and smaller, and the number of layers will be more and more. Reducing line width and line spacing is to maximize the use of limited area, and increasing the number of layers is to use space. In the future, the mainstream circuit of PCB will be 2-3 mil or smaller. Founded in 2010, Huaqiang Fast Circuit Technology Co., Ltd. is a company dedicated to PCB proofing and batch production, with high precision single-sided/double-sided/multi-layer circuit board (1-26 layers), thermoelectric separation copper substrate, multi-layer industrial control circuit board, Power PCB board, medical circuit board, security PCB board, communication Pcb board, automotive circuit board, instrument and instrument electrical board. Road boards, military circuit boards, composite bus copper substrates, foldable metal substrates, FPC hard and soft combination boards, quality assurance, punctual delivery, sales as one of the high-tech enterprises.
Circuit boards are generally divided into three single-layer boards, double-layer boards and multi-layer boards.
1. Single (double) surface PCB tin-sprayed board technological process blanking edge grinding drilling copper sinking thickening external graphics tin plating, etching and tin removal secondary drilling inspection wire printing resistance welding gold plating plug hot air leveling wire printing character shape processing testing inspection.
2. Gold plating process for double (single) face PCB: blanking edge grinding drilling copper depositing thickening outer graphics gold depositing, gold film etching secondary drilling inspection screen printing resistance welding silk printing character shape processing testing inspection.
3.Blanking, grinding, drilling, positioning hole, inner etching, inspection, blackening, lamination, drilling, sinking and copper thickening, outer drawing, tin plating, etching, tin withdrawal, secondary drilling, inspection, wire printing, soldering resistance, gold plating plug, hot air leveling, wire printing, character processing, shape testing, etc. Inspection.
What are the differences between single (double) face circuit boards and precision multi-layer PCB circuit boards?
Single (double) surface circuit board: It is generally believed that every grade of production line circuit board increases or rises, it must be invested once, and the investment capital is large. In other words, high-end circuit boards are produced by high-end equipment. However, large-scale investment is not affordable for every enterprise, and it takes a lot of time and money to test and collect process information after investment. It seems to be a better way to test and test production according to the current situation of the enterprise, and then decide whether to invest according to the actual situation and market conditions. This paper describes in detail the limit of the width of thin lines that can be produced under normal equipment conditions, as well as the conditions and methods for producing thin lines.
With the rapid development of mobile phone, electronics and communication industry, the PCB circuit board industry is growing rapidly. Customers are demanding more and more layers, weight, precision, material, color and reliability of PCB components. However, due to the fierce competition in market prices, the cost of PCB board materials is also on the rising trend. More and more manufacturers monopolize the market at low prices in order to enhance their core competitiveness. However, behind these ultra-low prices is to reduce the cost of materials and production costs to obtain, but devices are often prone to cracks (cracks), scratches (or scratches), its precision, performance and other comprehensive factors did not meet the standards, seriously affecting the solderability and reliability of products used.
Huaqiang Fast Circuit has devoted 8 years to the rapid proofing and mass production of high-precision multi-layer PCB, with high-precision single-side/double-side/multi-layer circuit board (1-26 layers), thermoelectric separation copper substrate, multi-layer industrial control circuit board, medical circuit board, security PCB board, communication PCB board, automobile circuit board, composite mother-row copper substrate, foldable metal substrate, etc.
Faced with various PCB boards on the market, there are two ways to distinguish the quality of PCB boards. The first way is to judge from the appearance, and the other way is to judge from the quality specification requirements of PCB boards themselves.
How to judge the PCB circuit board is good or bad:
Firstly, the appearance of PCB can be distinguished. Generally, the appearance of PCB can be analyzed and judged from three aspects.
1. Standard Rules of Size and Thickness: The thickness of PCB to standard PCB is different. Customers can measure and check according to the thickness and specifications of their products.
2. Weld appearance: Because there are many parts in the circuit board, if the welding is not good, the parts easily fall off the circuit board, seriously affecting the welding quality of the circuit board, good appearance, careful identification, a strong interface is very important.
3. Light and color: The external circuit board is covered with ink. The circuit board can play an insulating role. If the color of the board is not bright and less ink, the insulation board itself is not good.
Second: High-quality PCB circuit boards need to meet the following requirements
1. Require the telephone to be used well after the components are installed, that is, the electrical connection should meet the requirements;
2. Copper skin is not easy to peel off under high temperature.
3. The mechanical properties of the surface should meet the installation requirements.
4. Copper surface is not easy to oxidize, which affects the installation speed. It will be damaged soon after oxidation.
5. No additional electromagnetic radiation;
6. The shape is not deformed, so as to avoid the shell deformation and screw hole dislocation after installation.
7. High temperature, high humidity and special environment should also be considered. Width, thickness and distance of lines should meet the requirements so as to avoid heating, circuit breaking and short circuit.
8. Now it is all mechanized installation. The hole position of circuit board and the distortion error of circuit and design should be within the allowable range.
Above is the
PCB circuit board manufacturer summary
PCB circuit board judgment method, when choosing to buy
PCB circuit board, must polish the eyes.
