Electronics Forum | Sun Apr 18 07:01:10 EDT 2004 | Nick Prince
"Thanks for all your informative replies. I do know that Motorola is using a No Clean Eutectic Solder for their BGA's. We are in Aerospace and is using a Water Soluble Paste Flux." This statement is confusing me (not to difficult at my time of life)
Electronics Forum | Tue Apr 13 19:14:25 EDT 2004 | Dreamsniper
Hi DaveF, To explain. The BGA that we have is from Motorola. The solder balls of these BGA's are Eutectic Solder and processed using a NC flux (as per info from supplier). So this means that the BGA pad and solder connections had NC flux process. W
Electronics Forum | Fri Nov 09 16:57:27 EST 2001 | davef
Sure, it�s fine to use the proper amount of flux and no solder when reworking BGA. Recognize that these new solder connections have less metal and a lower standoff than similar BGA solder connections that have not been reworked. This undoubtedly
Electronics Forum | Tue Apr 13 17:48:54 EDT 2004 | davef
Q1: Can anyone explain to me about the effect of their mixture. A1: What is their �mixture�? Q2: What enhancement does my BGA will have when using a WS paste flux with regards to corrosion, 25 years life cycle of the solder joint. A2: Tough to say
Electronics Forum | Mon Feb 11 13:28:36 EST 2002 | stepheno
We have some BGA's that don't solder very well. They weren't properly stored in regards to moisture protection. The balls look dull and rough. After reflow there seemed to be a diffinate line between the balls and the solder on the PCB's. I think
Electronics Forum | Mon Jan 22 21:30:41 EST 2001 | dason_c
I had my experience when I run the Motorola BGA and I am not sure the voiding was created due to the incompatible flux residue. Rgds. Dason.
Electronics Forum | Tue Apr 13 15:44:41 EDT 2004 | Dreamsniper
Hi Guys, Thanks for all your informative replies. I do know that Motorola is using a No Clean Eutectic Solder for their BGA's. We are in Aerospace and is using a Water Soluble Paste Flux. Now, a) Can anyone explain to me about the effect of thei
Electronics Forum | Wed Aug 04 16:09:48 EDT 2004 | Dreamsniper
Hi, Thanks for your reply. I run 2 boards, using the same paste, thermal profile and the same method of aqueous cleaning, 1st is a Topline test board with topline BGA (BGA 272 with 1.27 Pitch) and the 2nd is our product PCB with our BGA from Motoro
Electronics Forum | Tue Jul 26 08:20:46 EDT 2005 | Bob R.
All you can do is try it. I did a literature search last year on causes of BGA voiding and came up with a pretty long list, sometimes contradictory. I also discussed it with several paste suppliers. What I came away with is that what aggravates voi
Electronics Forum | Thu May 30 13:46:00 EDT 2002 | davef
Consider NOT getting involved in those little POS chunks of sheet metal. * They're expensive. * You never have the one you need. * Even if you DO have the item you need, you probably will not be able to locate it. * It's all but impossible to c
