Electronics Forum | Fri Nov 11 04:40:18 EST 2005 | pavel_murtishev
Good day, First of all used solder paste should be placed in special container. It should be kept separately from �fresh� solder paste from the same jar. Limit paste usage period after opening the jar according to manufacturer�s specification. When
Electronics Forum | Wed Mar 14 08:45:41 EST 2001 | stefwitt
In order to track the board flow through your line you will have to hook up all conveyor input sensors as well as the last output sensor to a PLC. You can program the PLC to provide an alarm signal if a accumulative time of xxx hours for any board is
Electronics Forum | Wed Jun 20 21:58:37 EDT 2001 | fmonette
Dave, if you have a level 6 then you have no other option then to bake it and reflow before it exceeds the specified floor life. For more details check out the joint IPC/JEDEC standard J-STD-033. It can be downloaded for free at http://www.jedec.org.
Electronics Forum | Thu Nov 11 17:53:59 EST 1999 | Jeff Tamagi
I have read in some magazine articles that there is poor signal to noise ratio of RF devices when no-cean solder is used. The frequecies used exceed one Mhz? Is this true?
Electronics Forum | Wed Feb 10 15:49:53 EST 1999 | Gary Sickenger
Helo, Is it common for actual print height of solder paste to exceed the stencil thickness. For example If the stencil is 6mill thick and the actual height of the print is apx. 10 or 11mill. What causes the paste height to be greater than the sten
Electronics Forum | Wed Sep 18 17:21:19 EDT 2002 | slthomas
Dave, anything besides gold embrittlement to be concerned about if that concentration is exceeded? Never tried the stuff.
Electronics Forum | Fri Nov 22 15:29:18 EST 2002 | slthomas
Here's a clue, without all the hubub about being part of a "mission".....beat their prices, meet or exceed their quality, and be easy to work with. I think the news would get around.
Electronics Forum | Wed Mar 26 15:53:47 EST 2003 | russ
If you are applying paste, you should duplicate the profile recommended by the paste manufacturer. If you are applying flux only than you need to ensure that you do not exceed max temp and/or ramp-rates such as
Electronics Forum | Mon May 05 02:37:11 EDT 2003 | gaoliangcheng
Maybe you can check the thickness of the solder mask between the pads. If the highest of the solder mask exceed the pad,then the component which was placed will be unbalanced.
Electronics Forum | Thu Aug 12 18:06:09 EDT 2004 | SR
May I ask what component types you are using and who the suppliers are? FYI - If the components have exceeded their shelf life, they may have oxidized too much for soldering using low activity fluxes. Thanks and best regards, SR
