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Della Zhang

Email:zx@pcb-smt.net 

Tel:+8675526978081

Fax:+8675526978080

Mobile:+8613510199155

Skype:fastpcba03

Web:www.pcb-smt.net/www.pcbapcb.com 

Factory address: 3/F. 1/B, 18-2 Yuquan East Rd. Yulv Village. Guangming New district. Shenzhen. China.

Printed Circuit Board Assembly Pcb Assy

printed circuit board assembly pcb assy Analysis regarding PCB soldering pad easy to fall off There are several reasons which may force the printed Circuit board soldering pad easy to fall off, as a professional PCB to PCBA manufacturer, we hereby summarize major points as below: 1, Board sheet...

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Printed Circuit Board Assembly Pcb Assy

printed circuit board assembly pcb assy

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Analysis regarding PCB soldering pad easy to fall off

 

There are several reasons which may force the printed Circuit board soldering pad easy to fall off, as a professional PCB to PCBA manufacturer, we hereby summarize major points as below:

1, Board sheet quality problems

As a result of the copper clad plate adhesion between copper foil and epoxy resin glue is not good enough, even large area of the circuit board copper foil heated slightly or under the external mechanical forces, the soldering pad and the copper foil may easy to fall off.

2, the storage conditions for the circuit boards

Affected by the weather conditions or stored for a long time in the damp place, PCB moisture absorption water cut is too high, to ensure the solderability, SMT soldering to compensation due to the heat away moisture volatilizes, both soldering temperature and time be extended. This can easily stratify the copper foil and epoxy resin.

3, soldering iron welding problems,

Normally, the circuit board adhesion can bear basic soldering requirement, there will be no solder pad fall off phenomenon. But electronic products are quite common to repair, soldering iron is widely used during repair, while part of soldering iron tend to reach 300-400 degrees temperature, the instantaneous temperature is too high to maintain, which may lead to the solder pad easy to fall out.

 



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To improve the soldering times of the circuit board, and to avoid the solder pad easy fall off problem, our FastPCBA’s suggestions:

1, choose the guarantee &qualified supplier for the copper clad plate to ensure the quality.

2, the circuit board shall be kept in a dry place, while packed in a vacuum and with desiccant before shipping out.

3, For the thermal shock while using solder iron to repair the boards, through increasing of the electroplating solder copper foil thickness as far as possible.

Do you have any other suggestions or comments for the soldering pad fall off problem? Or would you like to know more about us? Please contact us.



FASTPCBA Technology Co.,Ltd is a competitive China printed circuit board assembly pcb assy OEM manufacturer, supplier and vendor, you can get quick turn printed circuit board assembly pcb assy production prototypes and samples from our factory.
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