Electronics Forum | Mon Jan 23 21:56:50 EST 2017 | jgo
Hi all, Am new to the SMT process. I'm in the process of purchasing a new SMT Pick & Place machine and am trying to figure out how to perform the buy-off. I'm from the semiconductor packaging background. For any new machine purchase, I'm used to se
Electronics Forum | Thu Jul 17 04:42:47 EDT 2003 | sanjeevc
Hi! One technique: 1. Remove all balls 2.Make > a mask(stensil)for reballing.The holes of the > mask must be 0.8-0.9 the size of the pads. 3. > Reball chips 4. Reflow chips Good luck Hi Yes,we have done quite a bit of reballing of BGAs with
Electronics Forum | Thu Dec 01 00:34:15 EST 2005 | pyramus
Guy's another question, how about any recommendation what type of adhesive to use as underfill for BGA during lead free process? Currently, we are only using Loctite 3609 & 3515 as adhesive we use 3515 as BGA underfill during normal leaded process s
Electronics Forum | Mon Mar 19 11:32:06 EST 2001 | Steve
Have you done any analysis on the failed rework? There could be any one of several reasons, i.e. bad alignment, wrong reflow profile, bad pad plating, etc. More information will help us help you.
Electronics Forum | Tue Jan 19 18:53:42 EST 1999 | Dave
Recently, someone in the SMTNET forum had installed a Wells-CTI Z-Lok socket and found that it was one row off from the board layout pads. Was the problem due to a layout error or was the datasheet incorrect?
Electronics Forum | Tue Jan 19 20:53:20 EST 1999 | Steve Gregory
Hey Dave!! I almost forgot, I got both footprint drawings, the new and the old...if ya' want, send me a email with your FAX number and I can FAX them to ya'... -Steve Gregory-
Electronics Forum | Fri Dec 09 14:37:04 EST 2005 | derengmao
I am using ver 6.50 software. Do you know Quad Align compared to Cyber or Samsung's own, which is better? Do you know if the QSA30V support non-symatrical Micro-BGA such as DDR2 DRAM IC?
Electronics Forum | Fri Apr 07 08:08:06 EDT 2006 | choppy
When reworking a BGA, we apply paste, inspect alignement with a camera and then proceed with the temperature profile. For the majority of the other components easily side accessible we do them by hand soldering.
Electronics Forum | Mon May 01 21:04:40 EDT 2006 | pfifla1
for a very repeatable rework srt 1100HR is a very nice machine... alot of $$$$ though.. i recently used a APE Sniper and i thought this machine was very simple but good to use easy to profile, and align BGAs.
Electronics Forum | Mon Nov 29 18:23:19 EST 2010 | comprep
Has anyone had any success with placing BGAs with the Quad QSP-2? We have been having alignment issues with BGA placement but our placement of 0402 parts is dead on. We have worked through the calibration and it seems to be correct.
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