IW93-2-HESG440356R1 印刷电路板 能够高效地执行各种任务

IW93-2-HESG440356R1 印刷电路板（PCB，Printed Circuit Board）又称印制电路板、印刷线路板，是重要的电子部件，是电子元器件的支撑体和电气连接的提供者。由于它是采用电子印刷技术制作的，因此被称为“印刷”电路板。几乎所有电子设备都离不开它，小到电子手表、计算器，大到计算机、通讯电子设备、军用武器系统，只要有集成电路等电子无器件，它们之间的电气互连都要用到PCB。IW93-2-HESG440356R1 印刷电路板按层数来分的话，可以简单到只有一层或两层铜，或者在高密度应用中可以有五十层或更多层。PCB的制作原理主要是利用绝缘的基材，如纸基或玻璃布基，在其上预浸酚醛或环氧树脂，然后粘上覆铜簿并层压固化。如果需要多层电路板，可以使用双层作内层、单层作外层或双层作内层、单层作外层的组合方式，通过定位系统及绝缘粘结材料交替在一起，并按设计要求进行导电图形的互连。IW93-2-HESG440356R1 印刷电路板在电子工业中占据着绝对重要的地位，它们为自动锡焊提供阻焊图形，为元器件插装、检查、维修提供识别字符和图形。随着电子技术的不断发展，印刷电路板的设计和制造技术也在不断进步，为电子产品的性能和可靠性提供了坚实的保障。

IW93-2-HESG440356R1

IW93-2-hectare 440356r1 printed circuit board (PCB), also known as printed circuit board or printed circuit board, is an important electronic component that supports electronic components and provides electrical connections. Due to its use of electronic printing technology, it is called a “printed” circuit board. Almost all electronic devices cannot do without it, from small electronic watches and calculators to large computers, communication electronic devices, military weapon systems, as long as there are electronic components such as integrated circuits, the electrical interconnection between them requires printed circuit boards. If the printed circuit board is divided by layer, it can be as simple as only one or two layers of copper, or in high-density applications, it can have fifty or more layers. The production principle of printed circuit boards is mainly to use insulating substrates, such as paper or glass cloth, to pre impregnate them with phenolic or epoxy resin, and then stick them onto copper coated sheets and laminate them for curing. If multi-layer circuit boards are required, a combination of double-layer as inner layer, single-layer as outer layer, or double-layer as inner layer, single-layer as outer layer can be used. The positioning system and insulation bonding materials are alternately connected together, and the conductive graphics are interconnected according to the design requirements. IW93-2-hectare 440356r1 printed circuit boards occupy an absolutely important position in the electronics industry. They provide solder mask graphics for automatic soldering and recognition characters and graphics for component insertion, inspection, and maintenance. With the continuous development of electronic technology, the design and manufacturing technology of printed circuit boards are also constantly advancing, providing a solid guarantee for the performance and reliability of electronic products.