Electronics Forum | Tue Nov 06 11:46:38 EST 2007 | aj
Hi Tony, You should search the archives as there is a lot of threads on this topic. A couple of quick checks - 1 - Are you running a Leadfree Process ( if you are not Leadfree maybe the BGA is ? ) 2 - Check your reflow profile is hitting all the
Electronics Forum | Fri Jan 24 15:46:29 EST 2014 | davef
Graping is caused by a lack of flux when the oven reflows the paste. Read [“Best Practices Reflow Profiling for Lead-Free SMT Assembly” Ed Briggs and Ronald C. Lasky, Ph.D., PE, Indium Corp] http://www.smtnet.com/library/index.cfm?fuseaction=view_ar
Electronics Forum | Wed Jan 21 12:25:45 EST 2015 | dyoungquist
Kester makes a thermocouple solder: Alloy SN10PB88AG2 Flux "44" Core 58 Diam 0.031" I have used this to solder thermocouples to pcbs when profiling for lead-free temperatures. When done you can unsolder the thermocouple and reuse it again. This g
Electronics Forum | Mon Aug 09 02:40:25 EDT 2004 | abraham
We find that the component industry has migrated to lead free components whereas our process is still not leadfree. We receive components from suppliers of which some are lead free and others are not. We populate both types of components on the same
Electronics Forum | Mon Aug 04 10:19:04 EDT 2008 | realchunks
One oven can run both, but your profiles may vary. You will not contaminate your lead-free by running it behind the leaded stuff. Even if you spell "native" as "native".
Electronics Forum | Wed Sep 17 18:16:28 EDT 2008 | yam6rider
Adam, Most leadfree components can handle only 260C. When you doing the profile, you should put thermocouple on the of the BGA package and to ensure the temp is not go over 260C.
Electronics Forum | Thu Jul 20 12:23:00 EDT 2000 | Dave F
Bob: Please help us understand the effect of changing to lead-free solder paste on our processes better. Compare the following for tin-lead and lead-free solders: * Size of stencil apertures � amount of solder necessary for a reliable solder conne
Electronics Forum | Tue Nov 06 12:38:26 EST 2007 | ck_the_flip
Tony, search the archives for "hybrid profile". There's alot of good info. in there about running Lead-Free BGA's in a Lead process.
Electronics Forum | Tue Oct 11 04:08:23 EDT 2005 | Rob
Hi Nuez, We've run a number of different brands of SMT Elco's through a number of leadfree temperature profiles, and consistantly the best performers were Elna & a very similar own brand product (not listing here as it was one from a sister company
Electronics Forum | Sat Jun 21 00:37:20 EDT 2003 | nifhail
Most of the capacitors & resistors supplier have implemented Leadfree finished on their components and like it or not, most of the PCBA house already using them in their process. I just got a notice from my component supplier telling me that they wil
winsouce.jpg)
