Component datasheets
Local copies are kept here so schematic capture and PCB review use the exact manufacturer variant selected by the preliminary BOM. LCSC catalogue numbers identify procurement entries; they do not make same-named parts interchangeable.
Included exact-part documents
| BOM function | Selected part | Local document |
|---|---|---|
| Wireless module | Holyiot 18010 V1.0 | holyiot-18010-module.pdf |
| Charger/power path | ETA6002E8A | eta6002e8a.pdf |
| 3.0 V regulator | MICRONE ME6211C30M5G-N | me6211c30m5g-n.pdf |
| 5 V boost | Silergy SY7069ADC | silergy-sy7069adc.pdf |
| USB current limiter | Silergy SY6280AAC | sy6280aac.pdf |
| USB data ESD protector | TECH PUBLIC USBLC6-2SC6 | tech-public-usblc6-2sc6.pdf |
| VBUS TVS | Nexperia PTVS5V0S1UR,115 | nexperia-ptvs5v0s1ur-115.pdf |
| Charger inductor | cjiang FXL0420-2R2-M | cjiang-fxl0420-2r2-m.pdf |
| Boost inductor | cjiang FXL0420-1R5-M | cjiang-fxl0420-1r5-m.pdf |
| USB-C receptacle | Korean Hroparts TYPE-C-31-M-12 | hroparts-type-c-31-m-12.pdf |
| Momentary hardware-reset switch | SHOU HAN TS24CA | shou-han-ts24ca.pdf |
| BLE profile LEDs | NATIONSTAR NCD0805O1 | nationstar-ncd0805o1.pdf |
| Reverse-battery clamp | MDD SS34 | mdd-ss34.pdf |
| Small-signal N-MOSFET | Yangjie BSS138 | yangjie-bss138.pdf |
| System and backlight high-side P-MOSFETs | Yangjie YJL3401A | yangjie-yjl3401a.pdf |
| Battery fault fuse | Littelfuse 0466002.NRHF | littelfuse-0466002-nrhf.pdf |
| USB VBUS PTC | LUTE 1206L100/16NR | lute-1206l100-16nr.pdf |
| Battery connector | JST S2B-PH-SM4-TB(LF)(SN) | jst-ph-series.pdf |
| Programming footprint | Tag-Connect TC2050-IDC-NL | tag-connect-tc2050-idc-nl-footprint.pdf |
| Latching main-power button | XKB Connection XKB5858-Z-E | xkb-xkb5858-z-e.pdf |