Electronics Forum | Sat Jan 29 16:35:33 EST 2000 | Robert Steltman
We have a Seho wave soldering machine and cannot seem to get rid of dross that is being generated within the solder pot, and is being pumped out in the wave. It is not the same kind of dross that forms on the surface of the solder pot(this is very m
Electronics Forum | Mon Apr 16 10:55:01 EDT 2001 | genny
Happened at my company lots on our older designs. We touched up those pads in house by hand, because the solder joint was very poor. We also did it on SOT 86 pkgs on the gnd pins. When they were touched up, we would get an extra 1/2dB of gain out
Electronics Forum | Thu May 18 16:27:53 EDT 2006 | bman
I don't have any experinence with this, but my concern is that you are limiting the amount of contamination your pot can absorb before you ever run a board through. What I mean is that even if you are able to drain all but about a kg of the old sold
Electronics Forum | Wed Mar 20 16:10:27 EDT 2013 | woodsmt
Most pots have a drain system, but that is a scary thing to use. I have seen places that have plumbed it nicely with ball valves and such to control the flow into small containers, but still fraught with danger. I use small metal bread pans. I lad
Electronics Forum | Thu May 18 14:50:08 EDT 2006 | grantp
Hi, The bath is titanium coated, and the machine is only 2 years old, and was designed for lead free, so we know we don't need to change anything. The reason the supplier gave for suggesting the bath change is "other companies are doing it" and it'
Electronics Forum | Thu Jan 23 20:27:54 EST 2003 | joeherz
Hello, We recently installed a new/used UPK 650 fitted with a foam fluxer using an RMA flux chemistry. We have had problems with icicling and bridging from the beginning. The bridging occurs mostly on DIPs and connectors. The icicling is on longer
Electronics Forum | Wed May 12 20:43:53 EDT 1999 | Earl Moon
| Folks, | I am interested in knowing what level of Nitrogen purity you are running in your reflow ovens for standard SMT assembly? | It seems over the last several years people are increasing the Oxygen level in thier reflow oven atmosphere. | What
Electronics Forum | Wed Oct 11 09:55:10 EDT 2000 | Ian Harrison
Some boards that are populated by one of our subcontractors are getting a white powdery residue forming on them. I think it is the non clean flux and process which they are using that is causing the problem. Their process is as follows. Flux is put i
Electronics Forum | Wed May 16 15:40:56 EDT 2012 | davef
Here's some notes from a Bob Willis presentation Assembly of Flexible Circuits with Lead-Free Solder Alloy [Bob Willis leadfreesoldering.com] * Flexible Circuit Construction ** Base Material - 0.05mm Copper 18/18 um ESPANEX from Holders Technologies
Electronics Forum | Wed Sep 09 10:02:46 EDT 1998 | Earl Moon
| | | I am in need of possible causes and solutions to capacitors that are failing in the field. | | | Are there issues in our process that need to be | | | checked? | | | Some people said the problems are due to improper | | | storage. Others sa
