Electronics Forum | Thu Sep 07 11:02:29 EDT 2000 | Travis Slaughter
Maybe its not splatter, in my experience a sloppy operator can get paste on contacts and just one sphere can rune them and can look like splatter.
Electronics Forum | Fri Sep 08 00:24:35 EDT 2000 | Jim Arnold
Sudden flux boil will cause splatter. More thorough drying or a slower intial ramp to allow drying to occur before a boil or "splatter" temperature is reached may aid your problem.
Electronics Forum | Thu Aug 17 07:48:46 EDT 2000 | Kamran.T
Sounds like improper heat distribution! Raise your prheat/soak time to assure even heating of the board∂. Another issue could be the moisture causing this anomaly.
Electronics Forum | Sun Nov 07 11:15:57 EST 1999 | Steve Thomas
And you still have sufficient volume left when you do that? I'm new to this, so I'm not questioning the validity of your statement, just soaking up what I can.....thanks. Steve
Electronics Forum | Tue Aug 14 21:29:29 EDT 2001 | mugen
Hi, Just to clarify the terms, traditional : aka : Ramp-Soak-Spike (RSS) profiling method tent : aka : Ramp-To-Spike (RTS) profiling method By search engines (eg. Yahoo), you can find more example profiles for your ref.
Electronics Forum | Thu Aug 23 00:17:53 EDT 2001 | mugen
Mike, 1) NC process = less BGA voids & void-size 2) longer soak times... Heyz, thanks mate :) ~~~~~~~~~~~~~~ Dave F, tot u were inclinded to the school of thought, that NC process hath higher chance for whining abt voids?
Electronics Forum | Wed Oct 23 03:48:48 EDT 2002 | kcngoi
Hi , DEK S'pore came out with a univeral frame called 'vector',that the stencil can be removed from the frame and soak into solvent for effective cleaning. RGDS JOSEPH
Electronics Forum | Wed Feb 26 10:57:47 EST 2003 | larryk
Dave, I had to contact Circuits Assembly, but I got the article. I'm going to forward it on to Ryan. I think you're on to his problem with flux becoming entrapped in the epoxy. It plays along with Locktites suggestion of a longer soak on his profile.
Electronics Forum | Thu Jun 26 04:34:49 EDT 2003 | emeto
Hi James, I saw very good posts here.Now I will give you one more practical way: 1. My advice is to encrease the temperature(like your first sidgestion). Termostress is important thing so your first zone should be 120-150C. 2. The paste profile. If
Electronics Forum | Thu Jan 29 18:01:20 EST 2004 | davef
Rethinking to Ramp / Soak: Yano, staying with ramp might not be all that bad after all, just decrease the ramp / slow-down the conveyor.
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