Electronics Forum | Wed Feb 24 11:00:12 EST 1999 | Steve Schrader
Are the terms "uBGA" and "Fine Pitch BGA" synonomous, different all-together, or is Fine Pitch BGA a subset of uBGA? Thanks. Steve
Electronics Forum | Mon Sep 24 20:38:27 EDT 2001 | davef
Mike's comments are well taken. Your technique works fine with BGA, but uBGA are less forgiving. Again, let's take about: * Specifics of the problem. * Amount and method of applying flux. * What's holding the uBGA in-place before the solder ball an
Electronics Forum | Wed Feb 24 12:53:55 EST 1999 | Dave F
| Are the terms "uBGA" and "Fine Pitch BGA" synonomous, different all-together, or is Fine Pitch BGA a subset of uBGA? Thanks. | | Steve | Steve: �BGA�: Micro BGA�. A brand name for a fine pitch BGA from Tessera. Fine Pitch (1) In SMD: Surfa
Electronics Forum | Fri Jul 18 10:04:32 EDT 2003 | jseagle
Hi all, I am looking for some recommendations on Underfill Equipment. Such as vendors, pumps, material, etc... We will be initially underfilling a 10mm x 10mm, 0.8mm pitch, 0.35mm ball uBGA on FR4 and going down in size and pitch from there. And
Electronics Forum | Tue Jul 31 20:02:26 EDT 2001 | davef
Search the fine SMTnet Archives, for instance � square and aperture � [http://www.smtnet.com/Forums/index.cfm?fuseaction=search_results&CFApp=1] will get you started on various pitches of uBGA [wid a cuppla CSP thrown in for yucks].
Electronics Forum | Wed Jan 26 14:04:03 EST 2000 | Joe Zarketa
Casey, I agree the Sniper is a fine machine! I'm doing uBGA's with a Sniper system and it is working great. Great uniform chip collapse! Plenty of power....That's why we bought the machine....Also, very easy for the production people to use. Jo
Electronics Forum | Wed Oct 20 11:39:01 EDT 2010 | mikesewell
On our Fuji NXT and AIM machines I never program local fids...we place down to 16 mil fine pitch and BGA, uBGA, multirow QFNs with no placement issues. Most boards are panelized in an array and we have corner fids added to the rails. Regards, Mi
Electronics Forum | Fri Nov 25 09:31:56 EST 2005 | davef
pyramus, First, search the fine SMTnet Archives for previous discussions on BGA shorts. Second, we're still not clear on the issue. * Is the problem with a BGA? If so, please describe the BGA, including any heat spreader * Is the problem with a uB
Electronics Forum | Thu Jun 03 10:00:40 EDT 1999 | Earl Moon
| Hi everybody, | | Somebody know the advantages of electroformed stencils on laser cut stencils ? | | any coment is apreciated. | | | thanks | | Al | We use electroformed when xtra or very fine pitch devices are involved. Very expensive propos
Electronics Forum | Fri Sep 23 03:52:41 EDT 2005 | dougs
Hi, Does anyone know if it's possible to place BGA's with pitch 0.5mm and ball diameter 0.25mm on a siemens F3. the manual says that smallest pitch on BGA's is 0.56mm. Siemens won't commit a yes or no, as you'd expect, but i'd have thought it w
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