What is the difference between PCB and circuit design?

November 02, 2024

1、 What is circuit design?

Circuit design is carried out before PCB design, mainly involving requirement analysis, functional requirements, performance requirements, etc. The process of designing, simulating, and experimentally verifying circuit principles to ensure that the circuit can meet expected functionality and performance. The focus is on the implementation of functionality, which is more like developing; PCB design is based on the already "developed" circuit diagram, considering what kind of circuit board to make, with a focus on the layout, number of layers, wiring methods of components on the circuit board, how to be more stable, anti-interference, manufacturable, installable, etc.

2、 What kind of PCB design?

PCB design is a three-dimensional layout that marks the position of components and ensures the proper layout and wiring of circuit components according to electrical connections.

3、 What are the advantages of PCB?

(1) Can be high-density

PCB high density can develop with the improvement of integrated circuit integration and installation technology.

(2) High reliability

Through a series of inspections, tests, and aging tests, the PCB can ensure long-term and reliable operation.

(3) Design feasibility

Various performance requirements for PCBs (electrical, physical, chemical, mechanical, etc.) can be achieved through design standardization, normalization, etc. to achieve printed board design with short time and high efficiency.

(4) Productivity

By adopting modern management, standardized, scaled, automated production can be carried out to ensure product quality consistency.

(5) Testeability

We have established a relatively complete testing method, testing standards, various testing equipment and instruments to detect and identify the qualification and service life of PCB products.

(6) Assemblability

PCB products are convenient for standardized assembly of various components and can also be automated and mass-produced on a large scale. At the same time, PCBs and various component assembly parts can also be assembled to form larger components, systems, and even the entire machine.

(7) Maintainability

Due to the standardized design and large-scale production of PCB products and various component assembly parts, these components are also standardized. So, once the system malfunctions, it can be quickly, conveniently, and flexibly replaced to quickly restore system operation.

With the development of science and technology, the application of PCBs is becoming increasingly widespread. PCBs are divided into single panel, double-sided board, and multi-layer board. Common multi-layer boards are generally 4-layer or 6-layer boards, and complex multi-layer boards can reach dozens of layers. They are widely used in consumer electronics, computers, communication tools, medical equipment, and other fields.

In terms of industry distribution, consumer electronics has the highest proportion, reaching 39%; Next is computers, accounting for 22%; Communication accounts for 14%; Industrial control and medical equipment account for 14%; Automotive electronics account for 6%; National defense and aerospace account for 5%, and the precision requirements for PCB are very high in fields such as aerospace and medical instruments. Although the scale of China's PCB industry is currently the largest in the world, its overall technological level still lags behind the world's advanced level. In terms of product structure, multi-layer boards account for the majority of the output value, but most of them are still dominated by mid to low end products with less than 8 layers. Although HDI and flexible boards have a certain scale, there is a gap in technological content compared to advanced foreign products. The IC board with the highest technological content is rarely produced by domestic enterprises.

So circuit design comes first, PCB design comes later. PCB design is the layout and wiring based on circuit design, and the two require completely different basic knowledge.

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Mr. jinglin

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Author:

Mr. jinglin

E-mail:

kingsleyliu@wisdommobi.com

Phone/WhatsApp:

+86 13537260078

Produtos populares

Notícias

Quais são as etapas na montagem de PCB e PCBA？

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Dongguan Jingling Communication Technology Co., Ltd. Foca -se em serviços de fabricação SMT, PCBA Assembly e OEM & ODM Processing and Manufacturing para vários produtos eletrônicos. Os equipamentos e tecnologia de produção existentes atingiram o nível avançado de pares nacionais e estrangeiros, incluindo principalmente máquinas de impressão americana dek totalmente automáticas, máquinas SMT de alta velocidade da série Siemens D, Heller Treze Zona de Temperatura Furnos de Solda, etc. Os componentes SMD para 0201 e 01005, bem como BGA e outros SMDs de precisão ultra-alta com um passo de 0,3 mm, podem ser instalados. Ao mesmo tempo, possui equipamentos de suporte relacionados, como AOI, raio-x, medidor de espessura de pasta de solda 3D, divisor de roteamento visual, divisor de corte em V, etc. possui forte capacidade abrangente de processamento e produção de apoio. Para melhorar a competitividade principal da empresa, o Shenzhen P&D e o Centro de Marketing foi criado em outubro de 2015, principalmente responsável pela P&D de front-end e marketing de placas de PCBA. Existem 12 engenheiros de P&D e 20 profissionais relacionados. Ele pode atender à depuração de pesquisa...

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