Electronics Forum | Wed Jan 15 11:18:51 EST 2020 | avillaro2020
Hi Evtimov, Thanks again! The solder wicking/open solder joint is not actually gross rejection, it is only a few and appeared random (difficult to trend the location of the opens), what is perflexing is that i have this 1 or 2 open solder joints sur
Electronics Forum | Wed Jan 15 11:53:40 EST 2020 | avillaro2020
As far as the large thermal gradient I have on my thick and thermal heavy board, I've done quite a bit to minimize the gradient but not successful. it's like one pad is connected to a signal while the other pad is connected to ground, you can't bring
Electronics Forum | Fri Sep 07 15:19:42 EDT 2001 | davef
Watt tiepoo? [Cereally, you can usually fix typos after you post by using the P yellow �edit� button that shows when you are looking at your posting.] We�re had people on SMTnet that were washing their boards with a brush attached to the end of a ga
Electronics Forum | Mon Jan 11 18:07:55 EST 1999 | Lech Bartnik
| | | This is a question for those of you who actually assemble components onto a board. | | | Any idea what the "industry standard" is for fall out on assembled PCB's? I realize that the controls put in place in your processes will effect your ove
Electronics Forum | Thu Apr 16 13:40:08 EDT 1998 | Chrys
| Is there anybody to help me ? | We have small balls appearing on the boards soldered by | wave soldering machine and it looks that use of nitrogen | is linked to the problem (because without nitrogen, we have no more | problems). | That remind you
Electronics Forum | Fri Sep 07 14:09:57 EDT 2001 | aqueous
Hi Carol, Pressure requirements have changed over the past few years. In the recent past, aqueous cleaning systems relied on high flow, low pressure �flooding� techniques. 20 � 30 PSI pumped through large orifice nozzles. With ever increasing boa
Electronics Forum | Thu Sep 15 11:28:11 EDT 2005 | LeeHoMa
hi Steve/Pete, Thank for your email to affirming our current mounting and soldering flow! In fact, I also don't see any problem for the pilot run(though in small volume - 500pcs). However, the problem is - I am challenged by my customer that the AI
Electronics Forum | Thu Nov 10 10:45:32 EST 2011 | aqueous
The use of IPA in automated defluxing systems is nearly extinct for the following reasons: 1. IPA is flammable. In a spray-in-air environment, the already low flashpoint is even lower. 2. IPA is not a great solvent. There are specific containme
Electronics Forum | Thu Feb 12 07:58:54 EST 2015 | erezah
A-610E, 10.7.4 covers solder mask discoloration. > Use that for your disposition > > In a previous > thread, Boardhouse told us "Here are a couple of > things that can affect color. * Material color > is the major, * Matte green from Enthone wou
Electronics Forum | Tue Jan 14 19:41:32 EST 2020 | avillaro2020
Hi Evtimov, Thanks for your response. Yes, the vapour phase is suppose to handle big and heavy boards, at least thats the intention. Well our thin board is like around 3mm which is not really thin. In our application the thicker the boards means more
