PCB board is an indispensable part of modern electronic products, which is the carrier of electronic components, responsible for connecting electronic components and transmitting electrical signals. In modern industrial production, PCB board manufacturing and processing has become a very important process. This article will provide a detailed introduction to the manufacturing process and key points of FasTechCircuit PCB board.

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1、 Manufacturing and processing process of PCB board

Design schematic diagram and PCB layout diagram

Before manufacturing a PCB board, it is necessary to design the schematic and PCB layout first. A schematic diagram is a logical representation of a circuit diagram, while a PCB layout diagram is a physical representation of the circuit diagram. When designing schematic and PCB layout diagrams, it is necessary to pay attention to the layout and connection of the circuit to ensure its stability and reliability.

Printed circuit diagram

A printed circuit diagram is the process of converting a PCB layout into an actual circuit board. The process of printing a circuit diagram involves placing the circuit diagram on a copper plate and chemically removing any unused parts from the copper plate. The quality of printed circuit diagrams directly affects the quality and performance of circuit boards.

drill hole

Drilling is the process of drilling holes on a circuit board to facilitate the installation of electronic components. The quality of drilling directly affects the accuracy and size of circuit board hole positions.

Inner image

The inner layer image prints the internal circuit image of a PCB board onto the inner layer of the PCB board. The process of inner image includes placing the inner image on a copper plate and removing the useless parts through chemical methods. The quality of the inner image directly affects the signal transmission and electromagnetic interference issues of the circuit board.

Copper clad

Copper coating is the process of covering copper foil on a PCB board to fix electronic components on the board. The process of copper coating involves placing the copper foil on the PCB board, and then tightly bonding the copper foil with the PCB board through heating and pressure.

Outer layer image

The outer layer image prints the external circuit image of the PCB board onto the outer layer of the PCB board. The process of outer layer image includes placing the outer layer image on a copper plate and removing useless parts through chemical methods.

welding

Welding is the process of fixing electronic components onto a PCB board and connecting their pins to the PCB board. The welding process involves placing electronic components on the PCB board, and then connecting the pins to the PCB board through heating and solder.

test

The test is to check the electrical performance and signal transmission capability of the PCB board. The testing process includes using testing instruments to check the circuit and signal transmission capabilities of the PCB board to ensure that it meets design requirements.

2、 Key points of PCB board manufacturing and processing

Material selection of PCB board

The material of PCB board is an important factor in manufacturing PCB board. When selecting materials, it is necessary to consider factors such as the performance, reliability, and cost of the circuit board. Commonly used PCB materials include glass fiber, epoxy resin, polyimide, etc.

Thickness of PCB board

The thickness of the PCB board has a significant impact on the performance and reliability of the circuit board. Normally, the thickness of a PCB board is between 0.8mm and 2.4mm. When selecting the thickness of a PCB board, it is necessary to consider factors such as the mechanical strength, signal transmission capacity, and cost of the circuit board.

Copper thickness of PCB board

The copper thickness of PCB boards has a significant impact on signal transmission and electromagnetic interference issues of circuit boards. Normally, the copper thickness of a PCB board is between 1oz and 4oz. When selecting the copper thickness of a PCB board, it is necessary to consider factors such as the signal transmission capacity, electromagnetic interference, and cost of the circuit board.

Surface treatment of PCB board

The surface treatment of PCB boards has a significant impact on the welding of electronic components and the reliability of PCB boards. Common surface treatments for PCB boards include tin spraying, lead spraying, ENIG, etc. When selecting the surface treatment of PCB boards, it is necessary to consider factors such as the welding of electronic components and the reliability of PCB boards.

Welding quality of PCB board

The welding quality of PCB boards has a significant impact on the performance and reliability of circuit boards. When welding, it is necessary to pay attention to factors such as welding temperature, solder quality, and welding time to ensure the quality and reliability of welding.

PCB board testing

Testing is to check the electrical performance and signal transmission capability of the PCB board to ensure that it meets design requirements. During testing, it is necessary to use professional testing instruments to comprehensively and meticulously test the PCB board to ensure its quality and reliability.

In summary, the manufacturing and processing of PCB boards is a very important process. FasTechCircuit focuses on material selection, PCB thickness, PCB copper thickness, PCB surface treatment, and PCB welding quality when manufacturing PCB boards.