China Wholesale Custom Printed Circuit Board Quotes - 6 layer ENIG impedance control PCB – Huihe
China Wholesale Custom Printed Circuit Board Quotes - 6 layer ENIG impedance control PCB – Huihe Detail:
How to improve the lamination quality of multilayer PCB?
PCB has developed from single side to double side and multilayer, and the proportion of multilayer PCB is increasing year by year. The performance of multilayer PCB is developing to high precision, dense and fine. Lamination is an important process in multilayer PCB manufacturing. The control of lamination quality is becoming more and more important. Therefore, in order to ensure the quality of multilayer laminate, we need to have a better understanding of the multilayer laminate process. How to improve the quality of multilayer laminate?
1. The thickness of the core plate should be selected according to the total thickness of the multilayer PCB. The thickness of the core plate should be consistent, the deviation is small, and the cutting direction is consistent, so as to prevent unnecessary plate bending.
2. There should be a certain distance between the dimension of the core plate and the effective unit, that is, the distance between the effective unit and the plate edge should be as large as possible without wasting materials.
3. In order to reduce the deviation between layers, special attention should be paid to the design of locating holes. However, the higher the number of designed positioning holes, rivet holes and tool holes is, the more the number of designed holes is, and the position should be as close to the side as possible. The main purpose is to reduce the alignment deviation between layers and to leave more space for manufacturing.
4. The inner core board is required to be free of open, short, open circuit, oxidation, clean board surface and residual film.
A variety of processes, to provide customers with cost-effective PCB
Heavy Copper PCB
Copper can be up to 12 OZ and has a high current
The material is FR-4 / Teflon/ ceramic
Applied to high power supply, motor circuit
Blind Buried Via PCB
Use micro-blind holes to increase the line density
Improve radio frequency and electromagnetic interference, heat conduction
Apply to servers, mobile phones, and digital cameras
High Tg PCB
Glass conversion temperature Tg≥170℃
High heat resistance, suitable for lead-free process
Used in instrumentation, microwave rf equipment
High Frequency PCB
The Dk is small and the transmission delay is small
The Df is small, and the signal loss is small
Applied to 5G, rail transit, Internet of things
Equipment display
Automatic Plating Line
PTH line
LDI
CCD Exposure Machine
Application
Communications
Security electronics
Railtransit
Our factory
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By Sophia from Georgia - 2017.11.12 12:31
This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
By Olive from Sudan - 2018.07.26 16:51