Electronics Forum | Mon Mar 21 12:49:16 EDT 2011 | Nigel @ Rakon
I am having issues with Solder balls on Ceramic devices, all LEAD FREE SOLDER. The cermaics are only 7x5mm in size. The balls appear around the 0402 capacitors. I have a varying humidity from 15 to 40 %rh which is slightly low but I cannot control.
Electronics Forum | Mon May 02 15:36:40 EDT 2011 | marcpeo
One more note on this. The techs tell me that the main reason for the PV immediately matching the Set Point is that the software is in "Edit Mode". This is a mode that allows one to iterate the software without the oven running. That might also ex
Electronics Forum | Wed Jun 01 15:50:59 EDT 2011 | markhoch
I don't believe that particle size of the solderpaste will offer you any relief from this issue. The solder flows into the via, leeching away from the desired solderpoint, after the solder has become liquious. The chemical make-up of the solder contr
Electronics Forum | Mon Jun 13 09:43:11 EDT 2011 | mosborne1
Delamination almost always is caused by moisture in the PCB. You can try to keep some of the PCBs in a dry box after recieving them. You can also slowly heat them up to bake out moisture. If you are purchasing boards form overseas form a board house
Electronics Forum | Fri Aug 05 09:37:11 EDT 2011 | rgduval
From the fine SMTNet archives: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=12824&#Message54659 There are a few other threads available, as well, by searchign on PCB Delamination. Delamination post reflow is almos
Electronics Forum | Tue Nov 01 09:16:03 EDT 2011 | austinpeterman
Hello, Looking for a solution to silicon conformal coating wicking up into connectors. We build IPC-A-610 class 2. We are using a PVA 650 with Dow Corning 1-2577 conformal coating. We have solder joints that must be coated 1.25mm from the connecto
Electronics Forum | Wed Dec 14 04:34:50 EST 2011 | caerleon
I am installing MSL (Moisture Sensitivity Level) Controls in the company. I have been trying to contact manufacturers to obtain the MSL level (1-6) for each family of part they produce. Well i havent had a great response as they say refer to the dat
Electronics Forum | Wed Dec 21 17:11:58 EST 2011 | davef
Kim: We understand what you're saying. For us, fluxing the BGA and activating the flux are the issues. * If you're squirting liquid flux under the BGA with a plastic bottle with a needle tip on it and then reflowing less than the whole board with a
Electronics Forum | Tue Jan 24 21:30:09 EST 2012 | jorge_quijano
It means the machine places another component, no missing PCBs are built. As an update I have measured this % in the newest machine and it is below 1%, but in our worst machine (old quad) it is as high as 9% for a small batch of 10 boards (~15 comp p
Electronics Forum | Thu Mar 22 03:02:02 EDT 2012 | kcngoi
We use succesfully SN100C on ERSA330 for about > 2-3years. > > Pros: > > - price, - less dross > comparing to SAC305, - some ppl say better > mechanical durability comparing to SAC305 > (depends who pay for "independent" > studies) > > Cons:
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