With the development of electronic industry and electronic components integration, the electronic products size have become smaller and smaller,so small BGA package is widely used in PCB design,it’s necessary to reduce circuit trace width and line spacing to increase the number of layers as much as possible in limited area.
It is generally believed that the production circuit
1.Delamination
Delamination is a long-standing problem of PCB, the first ranking of the common problems. The causes may be as follows:
(1) Improper packing or preservation;
(2) The storage time is too long, more than the storage period, PCB board damped;
(3) Material or process problems;
(4) Material selection and poor distribution of copper surface.
The damp problem is
1.With the rapid development of communication technology in automotive electronics and power supply, 10OZ and above ultra thick copper circuit board has gradually become a kind of special PCB board has broad market prospect, by the circuit board manufacturers more and more attention, at the same time with the printed
Although the development of PCB technology is changing with each passing day, many PCB manufacturers focus on the HDI board, rigid flex board, backplane and other difficult parts.However, the existing market still has some relatively simple lines, unit size is very small, complex shape of the PCB, part of the
Each piece of PCB to sell are customized in PCB industry, therefore, PCB board quotation need to be cost calculation first, but also need to refer to the utilization ratio of material to make a comprehensive quote.
Many PCB purchasing people have no idea for the ever-changing PCB prices, even many years of
Flex PCB is Flexible Printed Circuit Board, abbreviated FPC, also known as flexible circuit board, or flexible board.According to the definition of IPC, flexible printed circuit board is a printed circuit designed and manufactured on flexible substrate.
Flexible circuit board is one of the important varieties of PCB.
FPC board is generally range
Blind and buried via PCB came by high density and high precision electronic products requirement.
Buried via is interior vias between top layer and bottom layer,it can not see after pressing,so don’t have to occupy the outer layer area.
The blind via is non-drilled vias,it can be seen at one surface side
Many newhands are curious Why the common single impedance controlled by 50 ohms instead of 40 ohms or 60 ohms?
First of all, 50 ohm has a certain historical origin, it must be mentioned from the standard cable. As we all know, a great part of modern electronic technology is derived from the army
When we design a project, we care more about layout and wiring, and often ignore the additional PCB manufacturing costs in the design. Here are some of the factors that affect PCB prices in the design and avoid increasing costs to customers.
PCB Layers number:layers good for layout, but the price
PCB circuit board has become the most important part of electronic products as its carrier of various components and signal transmission,PCB quality and reliability determines the quality and reliability of the whole machine.
With the miniaturization of electronic products and environmental protection requirements of lead-free and halogen-free,PCB also develops towards high-density,
