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How are components distributed during circuit board design?
.Installation
Refers to the specific application situation, in order to smoothly install the circuit board into the chassis, shell, and slot, without causing space interference, short circuit and other accidents, and to keep the designated connector in the chassis or shell A series of basic requirements for a designated location. I won’t go into details here.
.Stress
The circuit board should be able to withstand various external forces and vibrations during installation and work. For this reason, the circuit board should have a reasonable shape, and the positions of the various holes on the board should be reasonably arranged. Generally, the distance between the hole and the edge of the plate must be at least greater than the diameter of the hole. At the same time, it should also be noted that the weakest section of the plate caused by the special-shaped hole should also have sufficient bending strength. The connectors on the board that directly extend out of the equipment shell must be properly fixed to ensure long-term reliability.
3. Heating
For high-power devices that generate serious heat, in addition to ensuring heat dissipation conditions, attention should also be paid to placing them in appropriate locations. Especially in precision analog systems, special attention should be paid to the adverse effects of the temperature field generated by these devices on the fragile preamplifier circuit. Generally, the very high-power part should be made into a separate module, and certain thermal isolation measures should be taken between it and the signal processing circuit.
.Signal
Signal interference is the most important factor to be considered in circuit board design. The most basic aspects are: Separate weak signal circuits from strong signal circuits or even isolate the AC part from the DC part. Separate the high frequency part from the low frequency part. Pay attention to the direction of the signal lines, the layout of the ground wires, and appropriate shielding, filtering and other measures. These have been repeatedly emphasized in numerous treatises and will not be repeated here.
.Beautiful
Not only should the components be placed neatly and orderly, but also the routing should be beautiful and smooth. Since ordinary laymen sometimes emphasize the former to one-sidedly evaluate the merits of circuit design, for the sake of product image, the former should be given priority when performance requirements are not stringent.
Zhongtian Yuan Circuit Board Co., Ltd. is a high-tech enterprise in Zhengzhou specializing in the R&D, production and processing of B circuit boards, multi-layer printed boards and aluminum substrates. We have always put quality first and customer first as our service Our aim is to provide you with considerate service. We welcome customers and friends to call us for consultation and purchase!