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modules/qfn.fpd: added paste island ratio calculation, with NXP recommendations

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See also
http://lists.en.qi-hardware.com/pipermail/discussion/2011-March/007639.html
This commit is contained in:
Werner Almesberger 2011-08-16 12:23:04 -03:00
parent f0ad807cb9
commit d04a714bb4
1 changed files with 4 additions and 0 deletions
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modules/qfn.fpd
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@ -110,6 +110,10 @@ table
set w = 5mil
set zone_ratio_35 = ((SNX-1)*SE+SX)*((SNY-1)*SE+SY)/(X2*Y2)
set paste_ratio_20 = SX*SY*SNX*SNY/(X2*Y2)
frame pads @
frame center @
frame outline @