Product Detail

Flexible printed circuit board is a kind of printed circuit made of flexible insulating material, which has many advantages that rigid printed circuit board does not have.

It can be bent, wound and folded freely, can be arranged arbitrarily according to the spatial layout requirements, and can move and expand freely in three-dimensional space, so as to achieve the integration of component assembly and wire connection.

Product Name	Beton Multilayer Fpc Circuit Board Flexible PCB
Material Type	PI / PET
PCB Board Thickness	0.3mm
PCB Board Layer	double-sided
PCB Soldermask Color	Yellow
PCB Silkscreen Color	White black
PCB Surface Finish	ENIG/Immersion Gold
Test Method	flying-probe/test rig/test fixture/E-test
Production Needed Files	Gerber file& Bom/Firmware
FPC MOQ	1pcs
Minimum Line Space	0.1mm
Minimum Line Width	0.1mm

Main raw materials of FPC

1. Substrate

1) Adhesive base

The adhesive substrate is mainly composed of three parts: copper foil, adhesive, and PI. There are two types of single-sided substrates and double-sided substrates. The material with only one copper foil is a single-sided substrate, and the material with two copper foils is Double-sided substrate.

2) Adhesive-free substrate

The adhesive-free substrate is a substrate without an adhesive layer. Compared with the ordinary adhesive substrate, the middle adhesive layer is missing, and it is only composed of copper foil and PI, which is thinner than the adhesive substrate. , better dimensional stability, higher heat resistance, higher bending resistance, better chemical resistance and other advantages, have now been widely used.

3) Copper foil: At present, the thickness of commonly used copper foil has the following specifications, 1OZ, 1/2OZ, 1/3OZ, and now a thinner copper foil with a thickness of 1/4OZ is introduced, but this material is currently being used in China, and it is used in ultra-thin Thin road (line width and line spacing of 0.05MM and below) products. As customer requirements become higher and higher, materials of this specification will be widely used in the future.

2. Cover film

It is mainly composed of three parts: release paper, glue, and PI. In the end, only glue and PI remain on the product. The release paper will be torn off during the production process and will no longer be used. ).

3. Stiffener

It is a specific material for FPC and is used in a specific part of the product to increase the support strength and make up for the "soft" feature of FPC.

The commonly used reinforcing materials are as follows:

1) FR4 Stiffener: The main components are glass fiber cloth and epoxy resin glue, which is the same as the FR4 material used in PCB;

2) Steel sheet Stiffener: the composition is steel, which has strong hardness and support strength;

3) PI Stiffener: The same as the cover film, it consists of PI and adhesive release paper, but the PI layer is thicker, and can be produced in proportions from 2MIL to 9MIL.

4. Other auxiliary materials

1) Pure glue: This adhesive film is a thermosetting acrylic adhesive film composed of protective paper/release film and a layer of glue, mainly used for layered boards, flexible and rigid boards, and FR -4/Steel sheet reinforcement board, play a role in bonding.

2) Electromagnetic protective film: paste it on the board surface for shielding.

3) Pure copper foil: only composed of copper foil, mainly used for hollow plate production.

Type of FPC

FPC types have the following 6 distinctions:

A. Single panel: only one side has lines.

B. Double-sided: There are lines on both sides.

C. Hollow plate: also known as window plate (finger face opening window).

D. Layered board: lines on both sides (separate).

E. Multilayer board: more than two layers of lines.

F. Rigid-flex board: a product that combines Flex board and Rigid board.

Flexible PCB STACK UP

1 Layer Flex PCB with Optional FR-4 Stiffeners and PSA

2 Layer Flex Circuit with ZIF Contact Fingers

Multi-Layers Flexible PCB(FPC) laminate the Layers as above

 

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