Multilayer printed circuit board, fast prototype PCB fabrication
Multilayer PCB is one of the most distinguished product among those collections in Rocket PCB Solution Ltd.
It is designed by using superior and well- selected FR4. It comes with various structures. The design of it caters to varied needs of customers at home and abroad. Impedance control, dense circuit is adopted to produce high-quality Multilayer PCB. With such parameters as up to 64 layers, high reliable characterize Multilayer PCB.
Rocket PCB has been producing multilayer PCBs for over 20 years. Over the years, we have seen all types of multilayer constructions from various industries, answered all types of multilayer questions, and solved all types of problems with multilayer PCBs.
The quality of raw materials is not up to standard
The quality of raw materials is the basic quality of circuit boards. The material itself is not up to standard. The circuit boards made will appear foaming, stratification, board warping and uneven thickness.
Production equipment is not up to standard
With the progress of science and technology, the replacement of PCB production equipment is faster and faster, and the price is more and more expensive. Equipment is to ensure the quality of hardware, increase investment in equipment, so that equipment to achieve high efficiency, stability is the fundamental way to improve the quality of circuit boards. As a result, some small PCB factories are unable to purchase expensive equipment, which ultimately leads to the poor quality of FPC products.
Production technology is not up to standard
Each process of PCB production must be carried out in accordance with strict production process, and each process must be equipped with corresponding inspection equipment. These process parameters and equipment can guarantee the stability of PCB quality. Because the production technology is not up to the standard, many PCB factories only have low prices, resulting in the quality of the production line board is not up to standard.
The first point is the circuit design
The PCB with good quality must have reasonable circuit design. Whether double-layer or multi-layer board, it must have accurate line control and reasonable trace trend, in order to avoid the slow response due to redundant lines, that is, line width, line thickness, line spacing meet the requirements, so as to avoid line heating, circuit breakage, and short circuit.
The second point is the appearance
The PCB circuit board with good quality not only has a neat and smooth surface, but also basically does not appear the phenomenon of bending or uneven. The copper surface is not easy to oxidize, and there will be no cracks or scars, ink falling off.
The third point is the heat resistance of the product
This point should be observed personally, PCB circuit boards are assembled in their own products. If they can withstand the instantaneous high temperature produced by welding and the copper foil is not easy to fall off under high temperature, it shows that the PCB circuit boards have good heat resistance and good quality.
The fourth point is the expansion coefficient.
PCB circuit boards can produce drastic expansion or contraction in hot and cold environment. If the expansion coefficient is small and the thermal and cold environment has little influence on PCB circuit boards, the quality of PCB circuit boards is good and the components on PCB circuit boards will not be damaged.
Compared with a double-layer board, the multilayer circuit board has greatly improved the electromagnetic compatibility.
For example, in a four-layer board, the middle layer is used as a power layer and a ground layer, and the benefits of doing so are as follows,
(1) The inductance of the power wire and ground wire is greatly reduced, thus reducing the noise voltage
(2) The power supply layer and ground layer form a large distributed capacitor, which provides a good high-frequency decoupling effect for the power supply, thus reducing the noise on the power cord.
(3) Independent power and ground layer can minimize the area of all signal loops
PCB multilayer board is the trend of the circuit board industry, the circuit board industry is developing toward the smaller size, the smaller the hole, the thinner the thickness, the larger the number of layers, the smaller the line width and spacing and so on.
Many high-precision high-tech electronic products are required multilayer PCB board to achieve functions, the ordinary double-sided board simply cannot replace
Strong fabrication strength, can meet the bulk needs of different clients
> The factory invested heavily in importing foreign advanced PCB production equipment, such as Burkle laminator, Mitsubishi laser drill, Hitachi mechanical drill, Japan screen automatic exposure machine, LDI, AOI etc, highly automated production.With a monthly output of up to 250,000 square meters.
> Our suppliers have formed a complete production process, which is becoming more specialized, modern and large-scale, has signed long-term strategic cooperation agreements with well-known enterprises at home and abroad.
> We passed ISO 9001 quality system, TS16949, UL standard, ROHS standard and SGS lead-free certification and related industry certification.
> We provide real-time and in-depth technical support. Tailor-made application solutions, like high speed, high capacity and high frequency, press-fit, heat-sink solutions.
> Free DRC and DFM.
> Rapid feedback on the layout,build-up, panels, impedance, material selection, design rules, manufacturability, costs of different solutions, use of micro vias, gold plating, special laminates, etc.
> A number of production lines meet the request of mass production and fast turn around of small batches and various prototype PCBs
> Expedited production line for prototyping double-sided up to 24 hours, 4 layers 48 hours, 6 layers 72 hours etc.
> Mass production of double-sided board 5-6 days lead time, multi-layer board 7-9 days.
> DHL, Fedex, TNT, UPS Express Direct, fully meet the customer's time requirements.
> Strict production and testing, 100% outgoing pass rate
> Provide 1-64 layers of different thickness, different materials, different processes of product customization, of which the CCL using A-class raw materials, high quality assurance;
> Advanced technology for rigid, rigid-flex, flexible, RF, metal core, backplane, ceramic, HDI and so on.
> Eight major surface treatment technology and high-quality ink printing, beautiful and reliable.> Dozens of tests such as open/short circuit testing, impedance testing, solderability testing, thermal shock testing, metallographic micro-slicing analysis, halogen-free testing, etc.
Rocket PCB supply chain meticulously practices all-around quality management and actively introduces and implements multi-domain system management. We have successively obtained ISO9001, ISO14001, IATF16949, OHSAS18001, ISO/IEC27001, ISO13485 and AS9100 certifications.
PCB industry manufacturing level is uneven, compared with other low-end manufacturers, we have unparalleled advantages. Low-end manufacturing factories are facing various quality defects due to outdated equipment, confused site management, improper operation, poor quality control, insufficient skills of engineers and inadequate process control.