PCB News - Take you to understand the difference between HDI board and ordinary PCB board

Take you to understand the difference between HDI board and ordinary PCB board

HDI board is a high-density interconnection board, which is manufactured by a build-up method. The number of build-ups is proportional to the technical grade of the board, that is, the more the build-up times, the higher the grade. HDI boards are generally divided into ordinary HDI (stacked once) and high-end HDI (stacked twice or more), and adopt advanced PCB technologies such as stacking holes, electroplating hole filling, and laser direct drilling.

Generally, traditional HDI uses glass fiber-free back adhesive copper foil. The reason why glass fiber-free back adhesive copper foil is used is that the glass cloth cannot be penetrated by laser drilling. With the improvement of technology, the current high-energy laser drilling machine can penetrate 1180 glass cloth, so it is no different from ordinary materials.

PCB, or printed circuit board, is the support of electronic components and the carrier of electrical connections. It can realize automatic insertion or placement of electronic components, automatic soldering, automatic detection, etc., avoid manual wiring errors, ensure the quality of electronic equipment, improve production efficiency, reduce production costs, and facilitate later maintenance.

Ordinary PCB boards are mainly FR-4 laminated with epoxy resin and electronic grade glass cloth.

The cost of using HDI to manufacture PCBs with a density exceeding eight layers will be lower than using the traditional complex pressing process. And the HDI board is conducive to the use of advanced packaging technology, and the electrical performance and signal accuracy are higher than ordinary PCBs. HDI board has better effects on improving radio frequency interference, electromagnetic wave interference, electrostatic discharge, heat conduction, etc.

With the continuous innovation and development of science and technology, electronic products are slowly developing towards high density and high precision. "High" means to improve the performance of the machine and reduce the size of the machine. HDI technology allows the design of terminal products to meet higher standards of electronic performance and efficiency while making the volume more compact. Many electronic products are now manufactured using HDI boards, such as popular mobile phones, digital (camcorder) cameras, notebook computers, and automotive electronics.

The difference between HDI board and ordinary PCB board

With the upgrading of electronic products and the increase in market demand, the development of HDI boards will also be very rapid.