Electronics Forum | Fri Jun 01 04:05:25 EDT 2012 | grahamcooper22
If you think the root cause is excess moisture in the pcb then try to bake it for longer. Even longer then the manufacturers recommendation. It takes a long time for excess moisture to come out of a pcb. Try 24 hours , then 36 hours and see if there
Electronics Forum | Mon Jun 04 09:15:08 EDT 2012 | davef
bwjm: Delamination can be attributed to several factors: * Entrapped moisture, processing solutions, and what not that expands when heated to normal soldering temperature * Excessive soldering temperature * Excessive laminating temperature * Def
Electronics Forum | Tue May 07 12:27:23 EDT 2013 | hegemon
Seems really excessive. I am not familiar with that particular oven, but I would check to see that the fans are not seeing excess heat during use. Is there any ducting around the fans that might have leaky joints? Is there insulation around the fan
Electronics Forum | Fri Aug 11 14:29:58 EDT 2017 | abruno1995
I am having issues with this. I am having excess plating on my pcb board and i want to know if this is a ICP Class 1-3 Issue. 1. Excess Plating 2. Dark Vias Thank you
Electronics Forum | Mon Sep 24 11:12:56 EDT 2001 | nwyatt
Hi. We are currently using an unconventional method to rework a micro BGA - removing component with hot air, fluxing the area, placing the part with pick and place, then reflowing it in the oven. The reason we are doing it this way and not with a r
Electronics Forum | Mon Oct 06 10:04:29 EDT 2003 | davef
Excess low residue flux is very dangerous to leave on your finished assembly, because it can: * Be corrosive to your solder connections * Promote dendrite growth. To prevent this, follow your supplier's recommendations on: * Applying the proper amou
Electronics Forum | Wed Jul 22 15:05:31 EDT 1998 | Dave F
| | | | We are wave soldering a board having 24 similar thru hole connectors on it, using a wave soldering pallet. The problem is that one particular pin of connector in around 6-9 connectors get excess solder on the bottom side. I have tried all
Electronics Forum | Fri Mar 21 21:13:03 EST 2003 | iman
Russ, u mean excess flux causes "blow hole" defect?
Electronics Forum | Fri Aug 13 19:33:51 EDT 2004 | Carl
Also, excessive time at reflow really begins to stress the substrate and components as well.
Electronics Forum | Fri Sep 23 12:11:54 EDT 2005 | DasonC
If you can, store the excess components in a dry box which can maintain below 5%.
