394877-A02-4002604070   印刷电路板  电子元件的支撑体

型号：394877-A02-4002604070

印刷电路板，又称印制电路板、印刷线路板，是重要的电子部件，是电子元件的支撑体，是电子元器件电气连接的载体。其英文名称为“Printed Circuit Board”（PCB）。

由于采用电子印刷技术制作，印刷电路板使电路实现迷你化、直观化，对于固定电路的批量生产和优化用电器布局起重要作用。它所用的基材是由纸基（常用于单面）或玻璃布基（常用于双面及多层），预浸酚醛或环氧树脂，表层一面或两面粘上覆铜簿再层压固化而成。

394877-A02-4002604070印刷电路板可简单到只有一层或两层铜，或者在高密度应用中具有五十层或更多层。在现代电子设备中，从电子手表、计算器、通用电脑到计算机、通讯电子设备、军用武器系统，只要有集成电路等电子元器件，它们之间的电气互连通常都需要用到印刷电路板。

此外，394877-A02-4002604070印刷电路板还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。其种类繁多，包括陶瓷电路板、氧化铝陶瓷电路板、氮化铝陶瓷电路板、线路板、铝基板、高频板、厚铜板、阻抗板、超薄线路板、超薄电路板等。

Model: 394877-A02-4002604070

Printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, is the support body of electronic components, is the carrier of electrical connection of electronic components. Its English name is "Printed Circuit Board" (PCB).

Because of the use of electronic printing technology, printed circuit boards make the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. The substrate used is made of paper base (usually used for single side) or glass cloth base (often used for double side and multi-layer), pre-pregassed phenolic or epoxy resin, one or both surface layers are glued to a copper-coated sheet and then laminate and cure.

394877-A02-4002604070 Printed circuit boards can be as simple as only one or two layers of copper, or with fifty or more layers in high-density applications. In modern electronic equipment, from electronic watches, calculators, general computers to computers, communication electronic equipment, military weapon systems, as long as there are electronic components such as integrated circuits, the electrical interconnection between them usually requires the use of printed circuit boards.

In addition, the 394877-A02-4002604070 printed circuit board also provides solder resistance graphics for automatic soldering, and provides identification characters and graphics for component insertion, inspection and maintenance. Its wide variety, including ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, aluminum substrate, high-frequency board, thick copper plate, impedance board, ultra-thin circuit board, ultra-thin circuit board and so on.