The Importance of Copper Thickness in PCB Manufacturing

PCBs in sub-products are an integral part of modern electronic equipment. Copper thickness is a very important factor in the PCB manufacturing process. The correct copper thickness can ensure the quality and performance of the circuit board, and also affects the reliability and stability of electronic products.

Generally, our common copper thicknesses are 17.5um (0.5oz), 35um (1oz), 70um (2oz)

Copper thickness determines the electrical conductivity of the circuit board. Copper is an excellent conductive material, and its thickness directly affects the conductive effect of the circuit board. If the copper layer is too thin, the conductive properties may decrease, resulting in signal transmission attenuation or current instability. If the copper layer is too thick, although the conductivity will be very good, it will increase the cost and weight of the circuit board. If the copper layer is too thick, it will easily lead to serious glue flow, and if the dielectric layer is too thin, the difficulty of circuit processing will increase. Therefore, 2oz copper thickness is generally not recommended. In PCB manufacturing, the appropriate copper thickness needs to be selected based on the design requirements and actual application of the circuit board to achieve the best conductive effect.

Secondly, copper thickness also has an important impact on the heat dissipation performance of the circuit board. As modern electronic devices become more and more powerful, more and more heat is generated during their operation. Good heat dissipation performance can ensure that the temperature of electronic components is controlled within a safe range during operation. The copper layer serves as the thermal conductive layer of the circuit board, and its thickness determines the heat dissipation effect. If the copper layer is too thin, heat may not be conducted and dissipated effectively, increasing the risk of components overheating.

Therefore, the copper thickness of the PCB cannot be too thin. During the PCB design process, we can also lay copper in the blank area to assist the heat dissipation of the PCB board. In PCB manufacturing, choosing the appropriate copper thickness can ensure that the circuit board has good heat dissipation. performance to ensure the safe operation of electronic components.

In addition, copper thickness also has an important impact on the reliability and stability of the circuit board. The copper layer not only serves as an electrically and thermally conductive layer, but also serves as a support and connection layer for the circuit board. Proper copper thickness can provide sufficient mechanical strength to prevent the circuit board from bending, breaking or opening during use. At the same time, appropriate copper thickness can ensure the welding quality of the circuit board and other components and reduce the risk of welding defects and failure. Therefore, in PCB manufacturing, choosing the appropriate copper thickness can improve the reliability and stability of the circuit board and extend the service life of electronic products.

To sum up, the importance of copper thickness in PCB manufacturing cannot be ignored. The correct copper thickness can ensure the electrical conductivity, heat dissipation performance, reliability and stability of the circuit board.

In the actual manufacturing process, it is necessary to select the appropriate copper thickness based on factors such as circuit board design requirements, functional requirements, and cost control to ensure the quality and performance of electronic products. Only in this way can high-quality PCBs be produced to meet the high performance and high reliability requirements of modern electronic equipment.