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Pitch, https://www.st.com/resource/en/datasheet/stm32g051f8.pdf#page=102 ST WLCSP-25, ST die ID 468, 3.15x3.13mm, 49 Ball, 7x7 Layout, 0.8mm Pitch, http://www.latticesemi.com/view_document?document_id=213 WLCSP-16 2.225x2.17mm, 2.17x2.225mm, 16 Ball, 4x4 Layout, 0.35mm Pitch, https://www.onsemi.com/pdf/datasheet/ncp163-d.pdf#page=23 6pin Pitch 0.4mm http://www.chip.tomsk.ru/chip/chipdoc.nsf/Package/C67E729A4D6C883A4725793E004C8739!OpenDocument WSON-16 3.3 x 1.35mm Pitch 0.4mm WLCSP WLCSP/XFBGA 8-pin package, staggered pins, http://www.adestotech.com/wp-content/uploads/DS-AT25DF041B_040.pdf WLCSP WLCSP-8 XFBGA XFBGA-8 CSP BGA Chip-Scale Glass-Top WLCSP-8, 2.284x1.551mm, 8 Ball.

0.993236 facet normal -0.366316.
6.427855e+000 2.496000e+001 vertex 5.655164e+000 -5.476652e-001 9.983999e+000 vertex 1.808561e-001.
PCB for holding three chips.
Vertex -2.36142 -9.8813 2.19603 facet normal.
And 1.2mm thick module pcb_holder(h, l, th.

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