What is a multilayer circuit board?
In daily life, multilayer PCB circuit boards are currently the most widely used circuit board type. Multilayer PCB are circuit boards composed of two or more conductive layers (copper layers) superimposed on each other. The most common is four Six-layer board, such as the familiar computers in our daily life. Single-layer and double-layer boards are easy to distinguish and can be distinguished with the naked eye. Hold the board and look at the light. Except for the wiring on both sides, the rest of the place is transparent . But for multilayer PCB boards with four-layer boards and six-layer boards, if there is no corresponding mark on the board, it is not so easy to distinguish. Generally, the requirements for the structure design and process production of multilayer electric boards are very high, and the higher the number of layers, the more difficult it is, and it is suitable for use in more complex circuits.
Application advantages of multilayer PCB circuit boards:
1. High assembly density, small size and light weight, meeting the needs of light and miniaturization of electronic equipment;
2. Due to the high assembly density, the wiring between each component (including components) is reduced, the installation is simple, and the reliability is high;
3. Due to the repeatability and consistency of the graphics, the errors in wiring and assembly are reduced, and the maintenance, debugging and inspection time of the equipment is saved;
4. Flexible design, larger wiring space;
5. It can form a circuit with a certain impedance and can form a high-speed transmission circuit;
6. Circuit, magnetic circuit shielding layer can be set, and metal core heat dissipation layer can be set to meet the needs of special functions such as shielding and heat dissipation.
8 Layer HDI PCBs
6 Layer Impedance Control PCBs
Layer:4Layer
Material : ROGERS+FR4
Type:1/1oz TG170
Min trace width :0.2mm
Min trace space :0.2mm
Layer:4Layer
Material : FR4+2Layer PI
Type:Buried Blind Vias
Min trace width :0.2mm
Min trace space :0.2mm
Layer :6Layer
Material : FR4+2Layer PI
Type: 2oz copper TG150
Min trace width:0.2mm
Min trace space:0.2mm
Layer :2layer
Material : Aluminum
Finish: HASL
Soldermask: White
Silkscreen: Black
Layer: 4layer
Finish: ENIG
Copper thickness: 70um
Thickness: 2mm
Soldermask color : Purple
Layer: 16layer
Type:Buried Blind Vias
Finish: ENIG
Copper: 2oz finished
Layer: 16layer
Type:Buried Blind Vias
Finish: NCVF
Copper Fill
Sequential Lamination
3/3 Traces / Space
5% Controlled Impedance Tolerance
Layer: 12layer
Type:Micro Vias
Material : FR4 TG170
Finish: ENIG