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BackSee http://www.ti.com/lit/ds/symlink/lm3404.pdf 8-pin HTSOP package with 1.27mm pin pitch, compatible with Korean HRO Parts Elec TYPE-C-31-G-06 USB Type-C Receptacle Through-hole Right angle USB TYPE C, USB 2.0, SMT, https://www.jae.com/en/connectors/series/detail/product/id=91780 USB C Type-C Receptacle USB2.0 USB Type B SMT Horizontal 5 Contacts (https://katalog.we-online.de/em/datasheet/65100516121.pdf Mini USB 2.0 16P 16C USB4105-15-A USB4105-15-A-060 USB4105-15-A-120 USB4105-GF-A USB4105-GF-A-060 USB4105-GF-A-120 USB Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery holder, Memory Protection Devices P/N BC2AAPC, http://www.memoryprotectiondevices.com/datasheets/BC2AAPC-datasheet.pdf 2xAA cell battery CR-1025 coin cell retainer Keystone type 3000 coin cell vertical Panasonic CR-1220/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D140.PDF battery CR-1220 coin cell retainer Keystone type 105 battery holder coin cell retainer SMT battery holder Keystone SMT (Auto-In/Ultra-Low) Holder for 2032 Cell, 33.2 x 23.9mm, 2mm height above PCB, https://www.keyelco.com/userAssets/file/M65p4.pdf Keystone type 1057 coin cell vertical battery CR-2025 coin cell vertical Panasonic CR-2354/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D486.PDF battery CR-2354/VCN coin cell vertical Panasonic CR-1220/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D140.PDF battery CR-1220 coin cell vertical Panasonic CR-1632-V1AN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D464.PDF battery CR-1632 coin cell holder CR2032 retainer clip, SMT ( http://www.farnell.com/datasheets/1505853.pdf BC-2001 CR2032 2032 Battery Holder 2479 Battery Type 3xAA Battery Holder SMD Tactile Switch, https://www.e-switch.com/system/asset/product_line/data_sheet/165/TL3342.pdf SWITCH SMD KSA SW 4-bit rotary coded switch, through-hole, https://www.nidec-copal-electronics.com/e/catalog/switch/sh-7000.pdf SPST Off-On Pushbutton, 1A, 30V.
- FFG1930 Virtex-7 BGA, 44x44 grid, 45x45mm package.
- And 10 steps (sw1-sw10 .
- Coilcraft, XAL7030-161, 8.0x8.0x3.1mm, https://www.coilcraft.com/getmedia/0d05a05e-d55d-4a0c-911d-46bd73686633/xal7030.pdf Inductor, Coilcraft, XAL1580-401, 15.4x16.4x8.2mm.
- | 36 Schematics/Fireball.kicad_sch .
- TO-92 leads in-line, wide, drill 0.75mm, hand-soldering variant.