Electronics Forum | Wed Jul 05 13:30:37 EDT 2006 | Chris Griffin
Likely causes of this are: -Preheat temp. too low -too much dross -uncured epoxy -PCB contamination ...also varify the solder flow over the wave is smooth.
Electronics Forum | Thu Jul 06 04:41:58 EDT 2006 | Rob
MF300S is quite an old flux, & a lot has happened since then on the flow solder front - are you sure it's designed for Lead free, or is it just a traditional flux that SHOULD work OK with Lead free?
Electronics Forum | Mon Dec 17 15:11:35 EST 2007 | chef
Blew chunks - thanx for thinking outside the box. Of course there's two sides to every story. Just last week I had a new operator "splash" a couple of boards. Top solder was great, it was all one big solder bridge. Come to find out, the operator forg
Electronics Forum | Mon Jul 03 05:39:05 EDT 2006 | ronalds
Hi, I am experience problems while testing wave soldering SMT components that are glued on the solderside (lead free). Between de leads of SOx type IC's and SOT's develop a great deal of solder beads. I have been using a RSS temp.profile while spr
Electronics Forum | Mon Apr 02 01:24:52 EDT 2007 | Haris
Dear all, I want to know the difference between the CSP and the BGA (I think there is only in the mesh pin difference). Secondly, if their solder balls have same dia, LxBxH are also same with the the manufacturing of the pin coating chemical elemen
Electronics Forum | Fri Apr 06 08:45:48 EDT 2007 | davef
UNDERFILL The design of the component and the end-use environment drive the requirement fot underfill. Here is a good introduction: http://www.asymtek.com/news/articles/2002_globaltronics_csp_and_fcuf.pdf Google for more. We have no relationship, n
Electronics Forum | Mon Dec 17 15:41:15 EST 2007 | shrek
Ha-ha-ha-ha-ha,me lad. Wave solder is like an onion, it's got many many layers. Kind of like me-self. I'm a big ogre with many complex layers. At any rate i like the other colleague with his adverstising trigger finger. by golly, me chap, he's a
Electronics Forum | Wed Jul 05 10:13:02 EDT 2006 | jdengler
Is the flux rated for lead free? These higher temps will cause most lead rated fluxes to burn off prior to the wave. Jerry
Electronics Forum | Thu Jul 06 12:26:55 EDT 2006 | Chunks
Sounds like your flux to me. Since you cannot change the board or the machine, changing flux would be one question mark you could take away with a phone call and a sample. You will really be surprised how different fluxes can affect your final prod
Electronics Forum | Mon Jul 10 07:46:51 EDT 2006 | ronalds
You are right, RSS profile is not the correct description. I am using a profile which heats up quickly to let the flux spread. Next linear up to activate the flux and prevent thermoshock. My experience is however, that small changes in this profile
