Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Anyone seen Black Pad on BGA components?

Views: 2265

#59240

Anyone seen Black Pad on BGA components? | 9 July, 2009

Hi folks!

We seen to be getting Black Pad phenomenon, not on the PCBs, but on the BGA components themselves. These are high value items >$1000 each and once the pad has turned 'black it is almost impossible to re-tin it.

Has anyone else seen this problem? Do we have any comeback on our suppliers do you think, given that we placed the components onto the boards and subsequently removed them.

Hopefully the picture will attach! Thanks.

Attachments:

reply »

#59244

Anyone seen Black Pad on BGA components? | 9 July, 2009

We can't tell from your picture that you have black pad, but it's not uncommon. Look here: * http://findarticles.com/p/articles/mi_qa5348/is_200606/ai_n21392950/?tag=content;col1

* http://www.pwbrc.org/members/pdf/works99/Houghton.PDF

Attachments:

reply »

#59346

Anyone seen Black Pad on BGA components? | 22 July, 2009

Yes it is very usual problem with BGA components, and you can repair that with method "needle+flux+solder".

Sorry english is not my native language.

BR

reply »

PCB Soldering Tools

Polymeric Workmanship PCB for Training