Electronics Forum | Tue Mar 01 11:11:50 EST 2005 | spot
We use SRT. We still have machines that are over 5 years old and are functioning very well in the BGA, QFP and yes CSP area. The critical part is getting the right Air nozzle for the part size. Also the software has a auto-profile feature that wor
Electronics Forum | Wed Jan 17 17:09:43 EST 2007 | russ
appears to be incomplete reflow on a couple of balls or they were moved during a cooldown. it also seems as though there is a deviation in ball size due to inconsistant paste application possibly. I would stop applying paste and just reflow that pa
Electronics Forum | Thu Jan 18 13:13:53 EST 2007 | russ
won;t recommend a paste since I propose that you do not use but here is a flux I have had great success with Indium tacflux 20B IPN 84283 No clean flux, Use this alone without paste and your BGAs will work!! What was your package temp during th
Electronics Forum | Wed May 30 11:08:39 EDT 2007 | bartlozie
If you are use to this kind of work, you can repair/replace these components with a simple hot air blower, (�100) Get a good air and temperature controlled hot air blower, and a skilled operator, mount a thermocoupler on a testboard, and learn the t
Electronics Forum | Tue Sep 22 07:18:19 EDT 2009 | davef
While you're waiting for others to reply, search the fine SMTnet Archives to find postings like: * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=23229 * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=26457 * http://www.smtnet
Electronics Forum | Wed Sep 03 06:05:49 EDT 2014 | cunningham
We use the PDR machine. Great bit of kit. We prefer it due to the IR heating on the top. No air is used to potentially blow neighbouring components that go into secondery reflow off the board. We have a Zevac to but thats not as good. Camera is
Electronics Forum | Tue Sep 25 09:56:09 EDT 2001 | nwyatt
Hi, thanks for your input. Yes, we do have a rework station - specifically a SRT Summitt 1000 station, but it causes us many problems and is down more than it's up...I do not think that using it would speed up the process at all. As far as accuracy
Electronics Forum | Mon Aug 04 07:58:50 EDT 2014 | philc
Many thanks for the (very) useful and honest answer. I had thought that £1000 was too little, but we don't have a local supplier, so have to rely on internet descriptions. There appears to be many machines out there described as "BGA replacement mach
Electronics Forum | Mon Sep 24 17:38:18 EDT 2001 | mparker
First question - do you have a rework station? If so, are you experiencing the same type of failures there? I have successfully used no-clean on uBGA's in the past. 6 mil solder bumps, 10 mil spacing. 88 sites. Are you reusing previously soldered uB
Electronics Forum | Thu Apr 10 14:35:18 EDT 2003 | russ
What flux are you using to put them back on? you should be able to adequately clean the site after removal with alcohol or water depending upon the type of flux. "White grungy" usually comes from a liquid flux such as Alpha 857 being squirted on th
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