PCB according to the board application to classify single panel, double panel, PCB multilayer; 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. Níl i PCB ach pláta tanaí ina bhfuil ciorcaid chomhtháite agus comhpháirteanna leictreonacha eile.

I. Classification according to the number of circuit layers

Divided into single panel, double panel and multi-layer board. Is gnách go mbíonn 3-6 shraith ar an mbord ilchineálach, agus is féidir leis an mbord casta iltaobhach níos mó ná 10 gciseal a bhaint amach.

(1) Single panel

Ar chlár ciorcad priontáilte bunúsach, tá na codanna dírithe ar thaobh amháin agus tá na sreanga dírithe ar an taobh eile. Toisc nach bhfuil an tsreang le feiceáil ach ar thaobh amháin, tugtar painéal aonair ar an gclár ciorcad priontáilte. D’úsáid ciorcaid luatha an cineál seo ciorcad mar go raibh go leor srianta dochta ar chiorcad dearaidh painéil aonair (toisc nach raibh ann ach taobh amháin, ní raibh an sreangú in ann dul trasna agus b’éigean iad a ródú i gcosán ar leithligh).

PCB what are the classification of printed circuit boards

(2) Double panels

Tá sreangú ag an mbord ciorcad ar an dá thaobh. Ionas go mbeidh na sreanga ar an dá thaobh in ann cumarsáid a dhéanamh, ní mór nasc ciorcad ceart a bheith ann idir an dá thaobh, ar a dtugtar an poll treorach. Is poill bheaga iad poill treorach i gclár ciorcad priontáilte, líonta nó brataithe le miotail, ar féidir iad a cheangal le sreanga ar an dá thaobh. Is féidir painéil dhúbailte a úsáid ar chiorcaid níos casta ná painéil aonair toisc go bhfuil an limistéar dhá uair chomh mór agus gur féidir an sreangú a fhíodóireacht (is féidir é a fhoirceannadh go dtí an taobh eile).

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.