Electronics Forum | Wed Sep 20 09:37:15 EDT 2000 | Erick Russell
Determining cost of rework is based on usage and application. Photonic soldering saves an average of 5 minutes per rework site in process time and may save a significant amount of labor. Depending on volume, and specifics on the application, the cos
Electronics Forum | Tue May 29 17:04:57 EDT 2001 | hussman
No body really does these days - unless they work for someone who believes in duplicating what the vendor has already done. It used to be a good think to do in the past, cause most pastes and adhesives where kind of sensitive, but today most materia
Electronics Forum | Mon Jun 25 20:32:44 EDT 2001 | davef
You�re correct. This is a messy situation. Do not store components at the bake temperature longer than the time required to dry out the units for use in the reflow. Long storage times at elevated temperatures can cause soldering problems and the
Electronics Forum | Tue Jun 26 22:52:27 EDT 2001 | ianchan
I second that juicy bit from brownsj, Sn96/Ag4 process is what we are using too, currently for BIB runs, dunno about current capital investments needs, coz from what I understand, our company's BIB pioneer guy, personally designed the machines in cur
Electronics Forum | Tue Jan 11 10:01:30 EST 2000 | Wolfgang Busko
Hi Pat, we had white tin boards laying around for about 10 month with no extra protection than the plastic bag that they were shipped in. Never thought of using them for there was a relayout planned to fix some serious bugs. But that�s life, relayo
Electronics Forum | Mon Oct 11 13:17:36 EDT 1999 | Dave F
| A board shop rep contacted me about a process were solder paste is applied to the board as part of their mfg. process thereby eliminating the need for paste application at the assembler. This is a new one I have never heard of, but am willing to si
Electronics Forum | Fri Sep 17 03:46:31 EDT 1999 | Charles Stringer
| | I am not familiar with the "mil" metric. How many inches is in 1 mil? | | | | ...or 10 mil? | | | | | each mil = .001" | | Earl Moon | At risk of informing someones grandmother on the art of removing the contents of an egg without breaking
Electronics Forum | Fri Jul 30 11:16:55 EDT 1999 | DLKearns
| I have been asked to supply a maximum shelf life for our assemblied PCB's. I realise this is dependent on so many factors- temperature, humidity, no of layers etc. But does anyone have a formulae for calculating shelf life, or does anyone know of a
Electronics Forum | Tue Apr 27 09:31:45 EDT 1999 | Robert L. McCallum
On circuit board assemblies first pass yields need to be above 98%, if a supplier is below this level it is a indication that: he has poor control of the manufacturing process; Poor component selection (price over quality; excepted a poor design from
Electronics Forum | Sun Mar 07 17:01:45 EST 1999 | Steve Gregory
| And on it goes. Again, I can't thank you enough for your time. I will call you soon as others probably find this rhetoric a bit much. | | Earl Moon | Earl and Dean, No,no,no...please continue here. I've been gratefully reading everything y