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: 3111

Hi folks! We seen to be getting Black Pad phenomenon, not... - Jul 09, 2009 by Jon Hall  

We can't tell from your picture that you have black pad, but... - Jul 09, 2009 by davef  

Yes it is very usual problem with BGA components, and you ca... - Jul 22, 2009 by Sasha  


Jon Hall

#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 »


davef

#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 »


Sasha

#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 »

MSD Dry Cabinets
FPC* - Fluid Pressure Control - Dispensing Pump
Now Online
4
Visitors
0
Member

Who are SMTnet visitors?

Become a member now and receive the value and benefits of membership.

High Precision SMT Fluid Dispensers
Large PCB Dispensing System
IPC/WHMA-A-620 training

MSD Dry Cabinets