Cautions for PCB proofing
PCB circuit board proofing is to determine whether there are problems and whether the required functions can be completed before mass production. It is very important to proofing PCB in order to avoid problems in later stage, cause scrap and increase cost.
As a group of engineers, the precautions for proofing PCB circuit boards are as follows:
1. It is necessary to select a reasonable number of proofs according to different conditions in order to reduce the cost.
2. Specially confirm device packaging to avoid proofing failure due to packaging errors.
3. Conduct a comprehensive electrical inspection of PCB circuit boards to improve the electrical performance of circuit boards.
4. Make good signal integrity layout, reduce noise and improve the stability of circuit board.
二、As a manufacturer, PCB proofing needs to be noticed as follows:
1. Check the relevant PCB file materials carefully to avoid material problems.
2. Conduct process approval in an all-round way and process equipment with self-manufacturer.
3. Deepen communication with customers, understand customer requirements and precautions in detail, and prevent mistakes.
三、In the proofing process of PCB circuit boards, the matters needing attention are as follows:
1. Component layout and routing
Component layout and routing have a great impact on product life, stability and EMC, which should be paid special attention to. It is necessary to pay attention to the placement order of the components. Usually, the fixed orientation components related to the structure are placed first, and other components are placed from large to small. Other components layout also need to pay attention to heat dissipation problems, should be the heating elements, scattered, not gathered in one place.
2. Adjustment and perfection
After PCB wiring is completed, it is necessary to adjust the text, individual components, wiring and copper coating in order to produce, debug and repair.
3. Proofing PCB Circuit Board with Simulation Function
In order to ensure the correct proofing of PCB circuit board, software can be used for simulation. Especially the high frequency digital circuit can find some problems ahead of time and reduce the later debugging workload.
The article originated from Jiangmen single-sided and double-sided circuit boards. http://www.yonghongpcb.com/