Electronics Forum | Wed Aug 21 20:11:34 EDT 2002 | mitch
We are going to begin using a 64 pin 10mm QFP with 0.5mm lead pitch. I was recently asked if we need to purchase our PCB with E3 coating instead of tinned pads when using the .5 pitch. The concept being suggested is that the E3 coating will give us b
Electronics Forum | Fri Jul 18 10:04:32 EDT 2003 | jseagle
Hi all, I am looking for some recommendations on Underfill Equipment. Such as vendors, pumps, material, etc... We will be initially underfilling a 10mm x 10mm, 0.8mm pitch, 0.35mm ball uBGA on FR4 and going down in size and pitch from there. And
Electronics Forum | Tue Apr 19 09:06:51 EDT 2005 | russ
1005 breaks down like this in mm. the "10" equals 1.0 mm, the "05" equals 0.5mm so, 1005. in inch conversion 1.0mm = .04", 0.5mm = .02" so 0402 (.04" x.02" = 1.0 x 0.5). Hope this helped.
Electronics Forum | Mon Feb 04 12:28:28 EST 2008 | jseagle
1.0mm (0.039") 1.75X >0.5 to 1.0mm (0.02 to 0.039") 4X 0.25 to 0.5mm (0.00984 to 0.02") 10X
Electronics Forum | Wed Oct 26 03:43:11 EDT 2005 | meritajs
Hi Ken, Thank for your advice We suppose that with home position all is OK and ratio is in interval 40-60%.Y axis offset is not constant 5mm or 10mm but change ratio with working time and may be more than 10mm We think that problem is with Yservo mo
Electronics Forum | Tue Feb 04 22:28:16 EST 2003 | davef
You could reduce the paste by about 70%. Solder balling and tombstoning will be the issues to fight. The drivers to these don't change with the component size. Use the fine SMTnet Archives for background. Aperture Size and Thickness of Solder Pas
Electronics Forum | Fri Dec 08 19:02:12 EST 2023 | madisreivik
Found the main problem During messing around (hopelessly :) we had found the calibration menu and pressed "check". Machine thought that there was a calibration nozzle (maybe 10x10mm square) but in reality, there was d=1.0mm nozzle. Machine decided
Electronics Forum | Wed Jun 13 12:54:41 EDT 2001 | Dr. Harry
Does anyone have PCB thickness recomendations for .8 &1.0mm pitch bga's?
Electronics Forum | Thu Nov 10 15:43:10 EST 2005 | 1st Article
myu, Is using a 0.6mm stencil wise? 42.5 X 42.5 has two models, the 1mm pitch has 41x41 array with 1657 I/O and the 1.27mm pitch has 33x33 with 1088 I/O. For a typical c-cga with 1.0mm - 1.27mm pitch, may requires a 2mil stencil, 1.0mm pitch gets .
Electronics Forum | Fri Feb 01 09:34:54 EST 2008 | jdengler
In the PD for 0603 I have a min size of 0.7mm and a max size of 1.0mm and the CP4 size at 0.0mm. This way when you have 1.0mm nozzles in the machine it will use that and when you change them to 0.7mm it will use that. Both sizes work OK. -Jerry
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