Detailed Application of Thermal Graphite Sheet in PCB

Printed circuit board (PCB), as one of the core components of electronic equipment, undertakes the important task of connecting electronic components and transmitting electrical signals, but also faces the increasingly severe challenge of heat dissipation. As an efficient thermal conductive material, thermal graphite sheet plays an increasingly important role in the field of PCB heat dissipation.

Dasen produces thermal graphite sheets with excellent thermal conductivity. Its thermal conductivity is usually as high as 900 ~ 1950 W/m·K, far exceeding that of traditional thermal materials such as metals and plastics. This excellent thermal conductivity enables the thermal graphite sheet to quickly transfer the heat generated on the PCB to the cooling device or the surrounding environment, effectively reducing the operating temperature of the PCB.

In PCB, thermal graphite sheet is usually used in the following aspects.

First of all, it can be directly attached to electronic components with large heat output, such as chips, power tubes, etc. These components will produce a lot of heat when working, if not timely heat dissipation, it is easy to lead to high temperature and affect the performance or even damage. The thermal graphite sheet can quickly conduct the heat generated by these components away, thus ensuring their normal operation.

Secondly, the thermal graphite sheet can be used for interlayer heat dissipation of the PCB. In multi-layer PCBS, heat transfer is often not smooth enough due to a certain thermal resistance between the layers. By embedding thermal graphite sheets between the layers of the PCB, the inter-layer thermal resistance can be significantly reduced, and the conduction efficiency of heat inside the PCB can be improved, so as to achieve a more uniform heat dissipation effect.

In addition, the thermal graphite sheet can also be used to fill the interface between the PCB and the heat dissipation device. On the interface between the PCB and the heat dissipation device such as the radiator or fan, there are often small gaps and irregularities, which will affect the efficiency of heat transfer. The thermal graphite sheet has good flexibility and compressibility, which can fill these gaps, reduce the contact thermal resistance, and improve the transfer efficiency of heat from the PCB to the heat dissipation device.

Compared with traditional thermal conductive materials, thermal graphite sheets have many unique advantages. In addition to excellent thermal conductivity, it also has the characteristics of light weight, thin thickness, good flexibility, and can adapt to the complex structure and small space of the PCB. At the same time, the thermal graphite sheet has good electrical insulation performance, which can avoid short circuit and leakage problems between electronic components.

In short, as an efficient thermal conductivity material, thermal graphite sheet provides an effective solution to the heat dissipation problem of PCB. With the continuous improvement of the performance of electronic equipment and the increasingly strict heat dissipation requirements, the thermal graphite sheet manufactured by Dasen will have a broader application prospect in PCB. Welcome customers for inquiries!