Labels Milestones
Back0.25mm pad, 3.6x3.6mm, 36 Ball, 6x6 Layout, 0.5mm Pitch, https://www.st.com/resource/en/datasheet/stm32wl54jc.pdf ST UFBGA-121, 6.0x6.0mm, 121 Ball, 11x11 Layout.
- Finder 40.51 Pitch 5mm IM Signal.
- HLE-113-02-xx-DV-TE, 13 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf.