PCB what are the classification of printed circuit boards

PCB according to the board application to classify single panel, double panel, 多层板; According to the material, there are flexible PCB board (flexible board), rigid PCB board, rigidity-flexible PCB board (rigid flexible board), etc. Printed Circuit Board (PCB), also known as Printed Circuit Board, is an important electronic component, is the support body of electronic components, is the supplier of electronic components electrical connection, because it is made by electronic printing technology, so it is also called Printed Circuit Board. PCB 只是一块包含集成电路和其他电子元件的薄板。

印刷电路板

I. Classification according to the number of circuit layers

Divided into single panel, double panel and multi-layer board. 常见的多层板通常为3-6层,复杂的多层板可达10层以上。

(1) Single panel

在基本的印刷电路板上,零件集中在一侧,电线集中在另一侧。 因为电线只出现在一侧,所以印刷电路板被称为单面板。 早期的电路采用这种类型的电路板,因为对单个面板的设计电路有很多严格的限制(因为只有一面,布线不能交叉,必须在单独的路径中走线)。

PCB what are the classification of printed circuit boards

(2) Double panels

电路板两边都有接线。 为了使两侧的导线能够连通,两侧之间必须有适当的电路连接,称为导孔。 导孔是印刷电路板上的小孔,填充或涂有金属,可以连接两侧的电线。 双面板可以用在比单面板更复杂的电路上,因为面积是单面板的两倍大,而且布线可以交错(可以绕到另一侧)。

PCB what are the classification of printed circuit boards

(3) Multilayer board

In order to increase the area that can be wired, multi-layer boards use more single or double-sided wiring boards. Multilayer boards use a number of double panels, and put an insulating layer between each layer of the board after bonding. The number of layers on a board represents a number of independent wiring layers, usually an even number of layers, and contains the outermost two layers.

PCB what are the classification of printed circuit boards

Two, according to the type of substrate

Flexible circuit boards, rigid circuit boards and rigid-flexible bonded boards.

(1) Flexible PCB board (flexible board)

Flexible boards are printed circuit boards made from flexible substrates, which have the advantage of being bent to facilitate assembly of electrical components. FPC has been widely used in aerospace, military, mobile communications, portable computers, computer peripherals, PDA, digital cameras and other fields or products.

PCB what are the classification of printed circuit boards

(2) Rigid PCB board

It is made of paper base (usually used for single side) or glass cloth base (often used for double-sided and multi-layer), pre-impregnated phenolic or epoxy resin, one or both sides of the surface glued with copper foil and then laminated curing. This kind of PCB copper-clad foil board, we call it rigid board. Then made into PCB, we call it rigid PCB rigid board is not easy to bend, has a certain strength and toughness of the rigid base material made of printed circuit board, its advantage is that it can be attached to the electronic components to provide a certain support.

PCB what are the classification of printed circuit boards

(3) Rigid-flexible PCB board (rigid-flexible PCB board)

Rigid-flexible bonded board refers to a printed circuit board containing one or more rigid and flexible areas, composed of rigid boards and flexible boards laminated together. The advantage of rigid-flexible composite plate is that it can not only provide the support of rigid printing plate, but also has the bending characteristics of flexible plate, which can meet the needs of three-dimensional assembly.