Electronics Forum | Thu Aug 13 03:41:30 EDT 2009 | robhs
At risk of raising a topic that has already been discussed at length, if that is the case then please point me in the right direction. We have a Lead-Free assembly that has BGA devices on both sides of the board. Any recommendations as to how we mig
Electronics Forum | Tue Sep 22 00:51:53 EDT 2009 | rohitfast
In our industry we are producing PCB on which generally number of total component is around 2000. My query is maximum how many component or CRD we can rework in a single board, and what should be the criteria to scrap the board? Is there any specific
Electronics Forum | Tue Oct 27 22:52:18 EDT 2009 | davef
Top picture: We're not wild about the 'poor registration,' the differing thickness of the solder mask, and the crud all over the board. But, then again, we don't have a basis for rejection. Bottom picture: No basis for rejection Help us out, what do
Electronics Forum | Sun Nov 08 10:41:11 EST 2009 | rao
Excellent Web OEE calculator... For Ideal Cycle time we use to take Programming Cycle Time but in this calculator it seems you have taken Equipment Rated CPH. For a Given Board & the placement locations the rated CPH is not at all attainable because
Electronics Forum | Mon Jan 18 14:01:47 EST 2010 | cl
Good Afternoon, Is this by chance a Pb BGA on a RoHS board? We had an issue with a Pb BGA on a RoHS board where we experienced "ball drop" on the Pb BGA. This was due to the heat required to reflow the RoHS paste. It was more than the Pb BGA could
Electronics Forum | Fri Jan 29 19:11:10 EST 2010 | kaz
We (Industrial Electronics Service Depot) have been using a dishwasher with success on dirty/contaminated boards but without BGAs. Now we have a CPU board with couple of BGAs on it and no experience/expertise.. Is the washing it and the compressed
Electronics Forum | Wed Feb 24 07:28:40 EST 2010 | drt
Agree with what has been said so far. Check with your end customer and make sure the white haze appearance of the board will be acceptable. You will never get the board to look like it did before you started. It may be clean but it won't look like t
Electronics Forum | Wed Apr 07 17:03:50 EDT 2010 | duchoang
Hi Mabdalla, Attached is my VIOS file. The board dimension in your file is 285.75(L) x 215.90(W) I do not see the board thickness in your file. The dimension in my file is 192.7(L) x 153.67(W) x 1.8(T) Hope this info would help you a little.
Electronics Forum | Thu Apr 15 14:09:48 EDT 2010 | richardli
We found stains on the boards come out of reflow oven. The board itself color changed to yellowish from white . We understand discolor soldermask due to high temperature. This can be acceptable by our customer not the stains. The stains look like wa
Electronics Forum | Fri Apr 23 10:18:48 EDT 2010 | spitkis2
Graham, When performing such a temperature variation test, do you attach the thermocouples so that they are in contact with the PCB's pads or are they reading the air temperature? If they are attached to the PCB, I take it you reposition the board
