Electronics Forum: bga and both and sides (Page 1 of 11)

BGA on both Top and Bottom

Electronics Forum | Fri Jul 08 18:48:50 EDT 2005 | mdang

Hi, We are a Contract Manufacturing and have a project which has a few Xilinx BGA on top and bottom side. Does anyone run a cross this or have any suggestion on how to reflow them. Thank you, -Michael

BGA on both Top and Bottom

Electronics Forum | Thu Jul 14 15:20:15 EDT 2005 | Erik

Putting on the BGAs are relatively easy, it's the X-ray inspection of BGAs on both sides that can get tricky.

BGA on both Top and Bottom

Electronics Forum | Wed Jul 13 16:51:28 EDT 2005 | KT

we do it all the time. We havent had any problems with the BGA's. But, you dont want BGA right beneath another BGA.

BGA on both Top and Bottom

Electronics Forum | Sat Jul 09 07:53:16 EDT 2005 | davef

Search the fine SMTnet Archives for previous discussions. Here's an example of a recent thread similar to yours http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=35114

In same board both leaded and lead-free components used.

Electronics Forum | Tue Jul 13 07:22:43 EDT 2004 | Kris

Hi Imtiaz, Can you give a brakup of the 23 components and their end mettalurgy ? Chip ?? QFP/TSOP ?? BGA ?? Aluminium Caps ?? this will determine whether you can do it or not

Dye and Pry

Electronics Forum | Wed Mar 12 23:00:10 EDT 2008 | davef

You can say: The pad was lifted after reflow and prior to the dye and pry failure analysis. When we see lifted pads, we think: * That's a good solder connection * Either it took a lot of force to lift that pad or the fabrication of the board in the

Dye and Pry

Electronics Forum | Wed Mar 12 07:33:40 EDT 2008 | callckq

Hi All, One PCBA failed test after went through the Shock Test(Vibration) and suspected to be BGA solder ball crack. We performed dye and pry and found PCB's pad lifted with red mark ink penetrate pad underneath, what does this mean? Can I say the

Dye and Pry

Electronics Forum | Thu Mar 13 01:42:58 EDT 2008 | Sean

Thanks Real Chunks and Davef...Yours input is valuable to me. My inputs towards your question asked below: Questions are: * Why did you tell us the following? "This BGA is installed with heatsink (with hook at both side of the heat sink) manually b


Electronics Forum | Sat Jul 29 09:10:16 EDT 2006 | davef

Ball Grid Array (BGA). A surface mount technology leadless package with the connectors to the board placed in an array on the bottom of the package. They are attached to the board with tiny balls of solder placed on each contact. Pin Grid Array (P

via tenting and pluging

Electronics Forum | Fri Nov 03 07:28:27 EST 2006 | davef

Via filling methods are: * Tenting * Plugging * Capping * Flooding Tented Via. A via covered with dry film soldermask; the via is not filled. When tenting from both sides there may be issues with trapped air that expands during mass soldering. Plug

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