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Back12x12 raster, 7x7mm package, pitch 0.4mm; see section 6.1 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for ECP5 FPGAs, based on the thru-holes. C7 is a little bit of margin // margins from edges h_margin .
- Crystal FC-135 https://support.epson.biz/td/api/doc_check.php?dl=brief_FC-135R_en.pdf SMD Crystal.
- 3.734656e-03 -2.990880e-03 -9.999886e-01 facet normal 4.861690e-001 8.483579e-001.
- 0.000419123 0.115684 0.993286 vertex 0.892525 -6.73225 7.87036 facet.