Electronics Forum | Fri Oct 18 21:23:55 EDT 2002 | caldon
David- You are correct!!! DING DING DING!!!! Here is an overview from the ACI website: ACI offers solderability restoration services by using Reduced Oxide Soldering Activation (ROSA) technology to remove the oxide layers from circuit boards or comp
Electronics Forum | Wed May 07 09:31:28 EDT 2003 | davef
We use uV Dymax glue for thermocouple attach sometimes, but don't like the remainder [anal] and loosing attach, sometimes. Roger Saunders, President Saunders Technology, Inc; said: PRO: � These products are easier to use than high temperature solde
Electronics Forum | Tue Aug 03 18:11:21 EDT 2004 | davef
Improper washing of water soluable flux residues can be a major contributor to flux residues remaining on the board surface. ;-O That you appear to be only complaining about the pathetic state of the ability of your washer to clean under BGA, it may
Electronics Forum | Sat Jan 08 00:47:12 EST 2005 | Grant
Hi, Yes, one of the problems with the MYDATA is the feeders are in groups, but at the same time, they are simple, and don't break. But the new Agillis 12 and 16 mm feeders do jam a bit. It's worse on glued cover tape, while heat bonded cover tape is
Electronics Forum | Mon Sep 21 20:45:55 EDT 2009 | davef
10.4. Pre-Cure Examination. Immediately after material application, the uncured conformal coating shall be examined for: a. Bubbles and Air Entrapments. These defects shall be broken by vacuum, with a sharp probe, or other appropriate tools. b. Bridg
Electronics Forum | Thu Mar 11 21:36:51 EST 2010 | davef
Poor man's approach to assessing coplanarity issues: * Get two pieces of 2X4 wood that are the same length, about three inches long * Cut the end of one of the pieces at a 45* angle, so that the 45* angle cut leaves a face on the four inch side of th
Electronics Forum | Fri Jun 01 10:52:37 EDT 2012 | blnorman
Neither the Omega meter nor the IC are officially "destructive" tests, but everywhere I worked we treated them that way. The boards were scrapped after the test. The Omega meter can be tested at elevated temps, but the IC sample is extracted at ele
Electronics Forum | Wed May 22 19:10:47 EDT 2013 | anvil1021
We do a lot of these devices and I guess I am not familiar the term "Dry Solder". The QFN device is not designed to have a drain hole, but needs to have thermal vias to control heat in most cases. We have used every possible gnd pad design and modifi
Electronics Forum | Mon Sep 08 11:38:52 EDT 2014 | spoiltforchoice
They key requirement before any fancy tools is careful storage, stock control, labeling and handling. If your parts are incorrect before they even get to production, you're screwed. As gregp suggests, to get consistently correct value and orientation
Electronics Forum | Tue Nov 25 05:20:20 EST 2014 | grimus
Could be. I am making overprint to achieve proper amount of solder paste inside hole. Now I am trying to reduce maximum overprint and compensate it with step - up stencil. This could reduce effect that some particles of solder paste are not gathering
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