Huaqiang Fast PCB professional to customers
PCB proofing and
PCB batch manufacturer, everyone knows that PCB batch production before proofing, then this link is very important, then how should we pay attention to it?
First of all, we get the customer's sample data and the factory needs to check whether the uploaded documents meet the factory's process requirements, process capacity, uploaded documents whether there are design problems. If there are inconsistencies between uploaded parameter information and documents, which one must be the first time and confirmed by the customer for production? Is the circuit diagram complete? If incomplete, also need to confirm with the customer; if the bottom silk and top silk are the opposite, ask the customer whether the bottom or the bottom, and most importantly, PCB proofing factory must ensure quality, delivery and logistics, which is the customer's most concerned about.
1. The number of
PCB proofs should not be too much, because in case the same is not up to standard, the cost of more samples will not be collected back, so it is still less dozen, not enough to hit again.
2. for
PCB proofing, the price of different laminates is different. Generally divided into single and double panels, 4 layers, 6 layers, 8-14 layers, if you need to rush proofing circuit boards, then you need to pay according to the time and layer board.
3. layout the signal integrity, reduce noise and improve PCB stability.
4., we should pay attention to checking device encapsulation to avoid proofing failure due to encapsulation errors. Electrical inspection should also be comprehensive to improve the electrical performance of PCB board.
1, manufacturing physical borders
Closed physical boundaries are a basic platform for future component layout and routing, and they also restrict automatic layout. Otherwise, components from the schematic diagram will be at a loss. But we must pay attention to accuracy here, otherwise it will be too big to install questions. There is also the corner of the best place to use arcs, on the one hand to avoid sharp corners scratch workers, but also to reduce stress. In the past, one of my products was always in the process of transportation, a single machine showed the case of shell PCB pattern breaking, after the arc is good.
2. Square or polygonal holes or grooves: If there are no grooves produced by drilling documents, be sure to pay attention to, do not put the markings on other boards, the safest way is to use the same boards as the boards (or multiple boreholes together)! (e.g. Protel series, keepout line is defined as the boards, in the machinery) The drilling lines marked on the top of the layers are easily overlooked; when providing the Gerber file, please determine whether two kinds of drilling data have been produced, which will also lead us to choose one of them, and the leaks need to delete incomplete drilling data! Above, this from the design point of view, also does not conform to the simple is the solid principle, their own derivation of Gerber time, but also minute to leak the board, previously presented, the customer used five mechanical layers to place five different drilling holes.
3. Introduction of components and networks
It should be easy to draw the components and network into a good frame, but there are often questions that must be carefully addressed one by one according to the fault prompted, otherwise it will take more effort later. The questions here are generally as follows: the form of encapsulation of the component can not be found, the network of the component can not be found, there are unused components or pins, the comparison hints that these questions can be solved quickly. PCB. If there is any doubt about the design, do not say that the last time is right, this time must be right, or say, made two at the same time, one right, one wrong. Many times, our engineers will help you correct, but the wrong design, one day will be wrong, must improve and perfect the design of the doubt.
PCB design engineers need to pay more attention to the parameter information, quantity and component packaging problems in the design process. In the design process, the overall planning of the entire line, whether there is a short circuit in the line, whether the electrical inspection is in place, after all the inspection is completed, the design engineer must first ensure that In order to facilitate the design of PCB boards, designers need to design the corresponding layers, colors, sizes and sizes according to the requirements of the product circuit system. The whole layout of PCB design drawings can adopt the combination of automatic layout and manual layout to load the package model of components into the appropriate position in the PCB design window, so that the layout of components is more reasonable and beautiful. The routing of PCB design drawings also needs attention. If the automatic routing is unsuccessful, manual routing can be carried out. After all the designs are completed, the designed PCB layout can be saved and output the design files. Finally, there is an important step, is the PCB board simulation analysis, simply speaking, the PCB board signal simulation, from which to analyze the layout of the entire circuit and parameters are reasonable. The ultimate goal is to consider the cost of PCB, reasonable planning and product stability.
The above is Huaqiang fast sharing about the PCB proofing to pay attention to several important aspects, so as to help customers to make a good quality and efficient PCB proofing template. Take into account the worries of the customers as much as possible, and serve the customers with our heart.
