Electronics Forum | Mon Jun 14 11:19:48 EDT 1999 | Frank Frimpong
Hello, I am looking for the surface resistivity and volume resistivity of standard fr4 as a function of temperature and /or humidity . can any one help?
Electronics Forum | Sat Jun 12 17:01:44 EDT 1999 | Murray Pulman
We are using so called no-clean fluxws for our small batch production, however the results are not always very visualy pleasing with white powdery deposits being the norm. I would like advise on the best avenue to explore for a small batch cleaning s
Electronics Forum | Sat Jun 12 16:24:02 EDT 1999 | JohnW
| Is there public domain information available on standard surface mount package outlines and footprints? | Thanks, | WillyW | Willy, The IPC has a great listing for the std packages and footprints, as do most component manufacturers. I'd start on
Electronics Forum | Fri Jun 11 15:43:41 EDT 1999 | wayne sanita
How are you inspecting pcbs post-reflow, are you inspecting all or sampling. The type of assembly involved would be mainly chip components with a mix of actives and a few 25mil and under pitch. If you sample what are your fault rates looking like. T
Electronics Forum | Wed Jun 09 12:55:04 EDT 1999 | Bryan Warner
Does anyone have thoughts on BGA rework. We now use the OK BGA 3000 and now am considering an Infrared machine. Any thoughts?
Electronics Forum | Wed Jun 09 11:38:20 EDT 1999 | Roseann
In past PCB designs I have cleared all traces from all layers (except pwr/gnd) from fiducial area. It has come to my attention that this is only necessary on the side where fud is placed. Which is the correct method of design using a fidicial?
Electronics Forum | Tue Jun 08 09:37:20 EDT 1999 | Rob C
Anyone know a independent PCB inspection of BGA (X-Ray). We have several test boards that need BGA inspection.
Electronics Forum | Tue Jun 08 09:21:47 EDT 1999 | Christopher Cross
Can anyone lead me to good information on when and how European Union is going to implement it's lead-free directives. I have heard 2002 and 2004 as possible dates.
Electronics Forum | Tue Jun 08 21:23:37 EDT 1999 | Dave F
| Can anyone lead me to good information on when and how European Union is going to implement it's lead-free directives. I have heard 2002 and 2004 as possible dates. | Try:
Electronics Forum | Mon Jun 07 15:12:13 EDT 1999 | John Thorup
| I was wondering what measurements are used to define pitch? Generally we would use it for the distance from lead center to lead center of an IC. For instance, an SOIC would usually have a pitch of 0.050" or 50 thousandths of an inch (1.27mm)|
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