A fabricação do PCBA começa no design do PCB

Preparação preliminar do projeto de PCB

PCB board size and layer count need to be determined in the early stages of PCB design. The layer count will directly affect the PCB routing and impedance. The PCB dimension will help to achieve the purpose of PCB design.

Projeto de layout de PCB

In the PCB design process, the first is the correct layout, which is the most basic PCB design entry requirement. Secondly, the electrical performance, which is a measure of a PCB board is a qualified standard.Once again, optimize the PCB circuit routing to meet test convenience, neat and tidy.

Inspeção na RDC

Quality control is an important part of PCB design. It includes Self-inspection, mutual inspection, special inspection, etc. Check whether the empty foot of each component is normal and whether it is a leakage line. Check whether the upper and lower wiring of the same network table has holes, and whether the pads are connected through the holes to prevent wire breakage and ensure the integrity of the line.

A segunda etapa é a fabricação de placas PCB

A seguir estão os principais procedimentos de produção de placas multicamadas convencionais.

Corte de materiais: O material de corte é a grande área (48 pol. * 42 pol.) De matéria-prima que é cortada na placa do painel de trabalho necessária aos fabricantes de PCB.

Camada interna: The inner layer of the circuit uses positive imaging technology, After developing, etching, and de-filming processes, complete the production of the inner layer of the line.

Óxido Preto: Black Oxide is made before lamination. The main role is to roughen the copper surface and increase the surface contact area with the resin to ensure the quality of lamination.

Laminação: Stack up the inner core and prepreg to press into multilayer board through vacuum pressure machine. And make the tooling holes for the next process.

Drilling: Using CNC drilling machine, through holes are drilled for circuit connections between layers.

Cobre eletrolítico: Electroless copper is chemically deposited, copper. The method deposits a thin copper layer in the non-conductive substrate so that the through-holes are metallization. Then use the plating method to thicken the hole’s copper thickness to achieve the design purpose.

Chapeamento de cobre: O revestimento de cobre é um método de galvanoplastia para aumentar a espessura dos orifícios passantes e das superfícies do circuito.

Camada externa: Transfira o padrão externo para a placa revestida de cobre e grave o cobre inútil.

Caráter de resistência à solda: Imprimindo uma camada de tinta de máscara de solda isolada na superfície da camada externa. Alguns PCBs também precisam ter símbolos impressos na camada da máscara de solda.

Surface treatment: Common PCB surface treatments include HASL, OSP, Immersion Gold, ENEPIG, Immersion Silver, Immersion Tin, and Gold finger plating.

Teste Elétrico: All the PCBs must be pen/short tested before outgoing, the test included electrical test and flying probe test. Electrical test for PCB mass production and flying probe test for samples as it’s fast turn round.

Tipos de fabricação de PCBA

Existem dois tipos principais de fabricação de PCBA: Tecnologia de Montagem em Superfície (SMT) e Tecnologia Através de Furo (THT).

Tecnologia de montagem em superfície (SMT)

A montagem SMT da placa de circuito impresso é uma tecnologia de montagem de circuito que solda componentes na superfície de uma placa de circuito impresso por soldagem por refluxo ou soldagem por imersão. A fabricação de SMT PCBA é normalmente usada para dispositivos eletrônicos compactos, leves e de alta densidade, como smartphones, tablets e laptops.

Tecnologia de furo passante (THT)

Through-hole Printed Circuit Board assembly also named DIP involves inserting electronic components through pre-drilled holes in the PCB, and then soldering the leads to the other side of the board. Through-hole Printed Circuit Board assembly is used for heavy-duty electronic devices, such as industrial equipment and high-end audio gear.Most electronic devices are the combination of both SMT and THT assembly methods to achieve a balance between size, weight, and durability.

PCBA manufacturing in King Sun can offer a combination of affordability, quality, and scalability that makes it an attractive option for businesses. There are several advantages of PCBA manufacturing in King Sun.

Baixo custo

PCBA manufacturing in King Sun is typically much more cost-effective than in many other factories, due to the lower cost of labor and materials.

Alta qualidade

Despite the lower cost, PCBA manufacturing in King Sun can still be of high quality. We imported production and testing equipment from the United States, Japan, and other countries to help companies improve PCBA manufacturing and testing capabilities.

Produção em larga escala

King Sun is one of the largest producers of Printed Circuit boards and PCBA in China, which means that it has the capacity to produce large quantities of circuit boards and PCBA manufacturing quickly and efficiently.

Escalabilidade

King Sun has experience in producing circuit boards for a wide range of applications and industries, including automotive, telecommunications, and consumer electronics. This means that we can scale our production to meet the needs of different clients.

Retorno Rápido

King Sun has our own Printed Circuit Board factory and assembly factory, so the lead times can be very fast than other suppliers, which can be a significant advantage for clients who need their products quickly.

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