Electronics Forum | Thu Apr 22 18:02:04 EDT 2004 | davef
Could you be looking for this: http://www.assemblymag.com/CDA/ArticleInformation/features/BNP__Features__Item/0,6493,108063,00.html
Electronics Forum | Thu Apr 22 20:49:01 EDT 2004 | bunmiog
... or this http://www.smtnet.com/express/199908/bgarework/index.cfm?cfid=40896&cftoken=34317412
Electronics Forum | Wed Apr 21 19:59:43 EDT 2004 | Ken
It makes no difference if the solder is in balls, ingots, bars, paste etc. The thermal profile satisfies key areas of the reflow process as a function of your flux and alloy type. Peak and duration above liquiduous are a function of the alloy. pr
Electronics Forum | Wed Apr 21 17:27:27 EDT 2004 | russ
We always use the regular production reflow profile when we use this method. Since you don't want to do that, All that is required is to ramp the part up to temp to get the balls to melt. If you don't exceed 2C per sec. in a ramp you will be fine.
Electronics Forum | Wed Apr 21 11:33:20 EDT 2004 | tigerlordgm
As one of our small batch processes, we place BGAs on PCB without using solder paste. We apply tacky flux to a predetermined height on a pallet, "dip" the BGA into the tacky flux to wet the solder balls to the set height, and then use a BGA rework st
Electronics Forum | Tue Jul 15 21:04:17 EDT 2003 | Thomas
It is for an evaluation run for wafer bumping....Well guys any recommendation for the profile ??
Electronics Forum | Tue Jul 15 10:01:15 EDT 2003 | davef
We don't use Sn50, but if we did, we'd use our paste supplier's recommendation as the starting point for developing our reflow recipe.
Electronics Forum | Mon Jul 14 20:49:22 EDT 2003 | Thomas
Hi Need some help here. Anybody got the recommended profile for Sn50/Pb50 solder paste. Thanks.
Electronics Forum | Tue Jul 15 21:05:55 EDT 2003 | Thomas
Hi Dave, I saw many of your outstanding comments and postings. Can you save me this time on the profile recommendation ??
Electronics Forum | Wed Jul 16 11:54:25 EDT 2003 | MA/NY DDave
Hi, I agree with everyone else talk to the Mfg and ask for their recommended profiles. They should know the heating and the cooling profiles. If you really want to do this yourself you are going to have to run several experiments to determine just
.gif)
