China Wholesale Flexible Pcb Fabrication Suppliers - 6 Layer ENIG Heavy Copper PCB – Huihe
China Wholesale Flexible Pcb Fabrication Suppliers - 6 Layer ENIG Heavy Copper PCB – Huihe Detail:
Crack problem of inner thick brazing pad
The demand for heavy copper PCB is increasing, and the inner layer pads are getting smaller and smaller. The problem of pad cracking often occurs during PCB drilling (mainly for large holes above 2.5mm).
There is little room for improvement in the material aspect of this kind of problem. The traditional improvement method is to increase the pad, increase the peeling strength of the material, and reduce the drilling rate, etc.
Based on the analysis of PCB processing design and technology, the improvement plan is put forward: copper cutting treatment (when etching the inner layer of the solder pad, the concentric circles smaller than the aperture are etched) is carried out to reduce the pulling force of copper during drilling.
Drilling a drill hole that is 1.0mm smaller than the required aperture, and then carry out normal aperture drilling (secondary drilling) to solve the crack problem of inner thickness brazing pad.
Applications of the heavy copper PCB
Heavy copper PCB is used for a variety of purposes, e.g. in flat transformers, heat transmission, high power dispersion, control converters, etc. In PC, automotive, military and mechanical control. A large number of copper PCBs are also used:
Power supply and control converter
Welding tools or equipment
The automobile industry
Solar panel manufacturers, etc
Equipment display
Automatic Plating Line
PTH line
LDI
CCD Exposure Machine
Our factory
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Innovation, good quality and reliability are the core values of our enterprise. These principles today extra than ever form the basis of our success as an internationally active mid-size organization for China Wholesale Flexible Pcb Fabrication Suppliers - 6 Layer ENIG Heavy Copper PCB – Huihe , The product will supply to all over the world, such as: Bulgaria, Hanover, Kyrgyzstan, With strong technical strength and advanced production equipment, and SMS people purposefully , qualified, dedicated spirit of enterprise. Enterprises took the lead through the ISO 9001:2008 international quality management system certification, CE certification EU ; CCC.SGS.CQC other related product certification. We look forward to reactivating our company connection.
By Gail from Ghana - 2018.06.26 19:27
The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
By Carlos from Orlando - 2017.10.13 10:47