Electronics Forum | Mon Feb 23 03:10:05 EST 2009 | daan_terstegge
I'm looking for carton boxes for SMT-reels, as on this picture: http://img.photobucket.com/albums/v288/drone67/DSC00464.jpg They used to be supplied with parts from Philips, but they don't seem to make these anymore.
Electronics Forum | Thu Aug 03 10:12:31 EDT 2017 | bspoon
DCS testing has detected exotherming in samples of stock FR4 laminate material. The exotherming subsequently disappears from the heat flow plots when DSC testing is repeated a second time on the same samples. Can this non/ under-cured material cause
Electronics Forum | Mon Sep 22 17:51:00 EDT 2008 | snsmt
THe software i am using at my company is cad2cad. I uploaded a working program and i was able to see the program. I thought it would just be a bunch of x,y coordinates, but it is more confusing than i thought. Does anyone have any idea where i can st
Electronics Forum | Thu Sep 13 15:44:02 EDT 2012 | mbnetto
Hi everbody, I'm facing some soldering problems with a Diode (SMA) during wave soldering process. During this process almost all the time one of the component pads have no solder, according to the picture dsc000604 attached. Some considerations: * T
Electronics Forum | Fri Nov 15 03:56:26 EST 2019 | SMTA-Bob
We covered this in a past webinar on flexible and thin board assembly I presented. The webinar is available from my archive of recordings Its also covered in the Joe Fjelstad's book on flexible circuits which is free online if you do a search. I wr
Electronics Forum | Tue Apr 17 09:38:04 EDT 2001 | CAL
With some help from our good Friends at Agilent Technologies our RF Lab includes testing up to 100GHz. Equipment includes Vector network analyzer, signal analyzer, dual channel power meter, noise filter meter, advanced impedance analyzer (including
Electronics Forum | Sun Apr 05 09:46:47 EDT 1998 | Earl Moon
| We are looking at reflow soldering some Flexi-rigid | pcbs. I have heard that IR reflow soldering can make the Polyimide "self heat" and cause de-lamination. | Does anyone have any info. The thermal problems associated with polyimide rigid/flex de
Electronics Forum | Wed May 19 07:38:42 EDT 2004 | Bob L.
I'm trying to help one of our remote sites solve a problem with a warped PBGA. The corners are lifted, creating columnar joints and the central balls are sometimes shorting. I've verified that it's not popcorning and I've got samples going to the l
Electronics Forum | Wed Mar 18 09:03:57 EST 1998 | Earl Moon
| Problem occurs because the glass transition temp for FR4 is lower than reflow temperature. Our company wrote an article which was printed in SMT magazine some years ago | that deals with this exact subject. Best way to deal with this is to use a ce
Electronics Forum | Sat Aug 03 07:29:20 EDT 2002 | davef
IPC-PE-740 "Troubleshooting for Printed Board Manufacture and Assembly" has words to the effect of � 1.5---BAKING Laminate materials are baked several times during the manufacture of a printed wiring board. There are four major reasons for
