One minute to teach you how to distinguish between HDI circuit board and ordinary PCB
HDI circuit board is a high-density interconnection board, which is a circuit board with high line distribution density using micro-blind buried hole technology. The HDI circuit board has inner and outer circuits, and then through drilling, hole metallization and other processes, the circuits of each layer can be connected internally.
HDI boards are typically manufactured by a lamination process. The more times of lamination, the higher the technical level of the board. Ordinary HDI board is basically laminated once, high-order HDI adopts two or more lamination processes, and advanced PCB processes such as stacking holes, electroplating filling holes, laser straight drilling, etc.
When the density of the PCB is increased to more than eight layers, the cost of HDI will be lower than the traditional complex pressing process. HDI boards facilitate the use of advanced packaging technology, and their electrical performance and signal correctness are higher than traditional PCBs. In addition, the HDI board has better improvements in radio frequency interference, electromagnetic wave interference, electrostatic discharge, and heat conduction.
Electronic products continue to develop in the direction of high density and precision. The so-called "high" not only improves the performance of the machine, but also reduces the volume of the machine. High-density integration (HDI) technology can enable smaller end-product designs while meeting higher electronic performance and efficiency standards. At present, many popular electronic products, such as mobile phones, digital cameras, notebook computers, automotive electronics, etc., use HDI boards. With the upgrading of electronic products and market demand, the development of HDI circuit boards will be very rapid.
PCB(PrintedCircuitBoard), the Chinese name is printed circuit board. It is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. Because it is made of electronic printing, it is called "printed" circuit board. The main function of
is that after the electronic equipment adopts the printed circuit board, due to the consistency of similar printed circuit boards, manual wiring errors can be avoided, and the automatic insertion or installation, automatic welding and detection of electronic components can be realized, so as to ensure the quality of electronic equipment, improve labor productivity, reduce costs and facilitate maintenance.
PCB boards with blind buried holes are called HDI circuit boards? HDI circuit board is a high-density interconnection circuit board. The boards plated with blind holes and pressed are all HDI boards, which are divided into 1. 2. 3. 4. fifth-order HDI. Simple buried holes are not necessarily HDI.
The difference between HDI circuit board and ordinary PCB
The common PCB board is mainly FR-4, made of epoxy resin and electronic grade glass cloth. In general, traditional HDI uses adhesive-backed copper foil on the outer surface. Because the laser drilling through the glass cloth, so the general use of glass fiber-free adhesive copper foil. But now the high-energy laser drilling machine can already penetrate the 1180 glass cloth. In this way, there is no difference between ordinary materials.
The above is the content introduced by the editor on how to distinguish HDI circuit boards from ordinary PCBs. I hope it will be helpful to everyone,
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