Design requirements for printed circuit boards
The design of printed circuit board should meet the requirements of "correct, reasonable and economical", that is, the design of printed circuit board should accurately observe the connection of the chart of the circuit, and the selection of the adding method of the substrate of the printed circuit board should also be paid attention to.
The selection of substrates or improper installation and wiring of components may cause PCB to work unreliably. Printed circuit board design should be reasonable, otherwise it will affect the process of processing, assembly, testing and even maintenance. Poor selection of board shape will make processing difficult: lead Kong Tai will make assembly difficult; improper selection of board f external connection will make maintenance hard to wait.
In addition, as a product, it is also necessary to consider its economic costs.
Therefore, the design of printed circuit boards should be based on specific design requirements, comprehensive consideration of the above several factors, the following is some experience in designing printed circuit boards.
1)The design of printed circuit board starts with determining the size of the board. The size of the printed circuit board is limited by the size of the case housing.
2)Consideration should be given to how printed circuit boards are connected to external components such as potentiometers or other printed circuit board parts.
3)In the design of printed circuit board (PCB), there are usually two ways to package components, such as patch and direct insertion, which need to take into account the problems of specification, size and area when they are designed.
4) The connection between printed circuit board and external assembly is connected by direct connection and human connection. The direct connection is connected by plastic wire and metal isolating wire, and the plug is connected by socket and plug connection.
5)For larger components installed on printed circuit boards, metal attachments should be added to improve vibration and impact resistance performance.
6) For components installed on printed circuit boards that require heat dissipation, heat dissipation accessories should be fixed to facilitate heat dissipation and improve the digital thermal performance.
7) For safety and protection components installed on printed circuit boards, attach attachments to facilitate replacement and improvement security and protection performance.
This article is from Allicdata Electronics Limited which offer a varity of electronic components installed on PCB.