4 layers199.8 × 150 mm
4 layers50 × 85 mm
LR1121
WilliamSanchez/Hardware2- Size
- 50 × 85 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 106
- Pads
- 364
- Tracks, vias
- 394, 33
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Jul 2023
- Updated
- 23 Oct 2026
Overview
LR1121 is an open-source printed circuit board by WilliamSanchez, from the WilliamSanchez/Hardware repository on GitHub. It is a 4-layer board of 50 × 85 mm with 68 parts on 106 nets, routed with 394 tracks and 33 vias.
It is built around the LBAA0XV2GT-001, MAX-M10S and PCMF1USB3SZ. Its parts include 28 capacitors, 19 resistors, 6 ICs, 3 diodes and 3 inductors. It belongs with the STM32 boards of this library.
Main components
3
LBAA0XV2GT-001
SMD,10x8.7mm-40℃~+85℃ 1.8V~3.6V 21dBm LoRa SPI Stamp Hole Antenna SMD,10x8.7mm LoRa Modules ROHSMurataLoRa Modules
MAX-M10S
LCC-18_10.1X9.7LCC-18_10.1X9.7 New Arrivals ROHSu-bloxUncategorised
PCMF1USB3SZ
WLCSP-5(0.8x1.2)-40℃~+125℃ 0.25pF 2 38dB@2.6GHz 3Ω 6GHz Yes WLCSP-5(0.8x1.2) EMI/RFI Filters (LC, RC Networks) ROHSNexperiaEMI/RFI Filters (LC, RC Networks)
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0402_1005Metric | C10, C11, C12, C14, C15, C16, C17, C18, C20 |
| 8 | 10K | Resistor_SMD:R_0402_1005Metric | R3, R8, R9, R10, R12, R15, R16, R17 |
| 4 | 100 | Resistor_SMD:R_0402_1005Metric | R4, R5, R6, R7 |
| 4 | 10uF | Capacitor_SMD:C_0805_2012Metric | C21, C22, C23, C27 |
| 4 | 12pF | Capacitor_SMD:C_0402_1005Metric | C5, C6, C7, C8 |
| 4 | NU | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4 |
| 3 | 0 | Resistor_SMD:R_0402_1005Metric | R1, R2, R19 |
| 2 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C25, C26 |
| 2 | 2.21K | Resistor_SMD:R_0402_1005Metric | R13, R18 |
| 2 | GREEN | LED_SMD:LED_0402_1005Metric | D1, D3 |
| 1 | 0.01 | Resistor_SMD:R_2010_5025Metric | R11 |
| 1 | 0.047uF | Capacitor_SMD:C_0402_1005Metric | C24 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 15uH | Inductor_SMD:L_Taiyo-Yuden_MD-4040 | L3 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C19 |
| 1 | 2.2K | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 2.2uF | Capacitor_Tantalum_SMD:CP_EIA-1608-08_AVX-J | C13 |
| 1 | 2.2uH | Inductor_SMD:L_Taiyo-Yuden_MD-4040 | L2 |
| 1 | 2.4Gz | Connector_Coaxial:SMA_Molex_73251-1153_EdgeMount_Horizontal | AE1 |
| 1 | 25MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | 27nH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 32.768KHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 470nF | Capacitor_SMD:C_0402_1005Metric | C28 |
| 1 | BOOT0 | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | BQ25619ERTWR | _W_LoRa:BQ25619ERTWR | U7 |
| 1 | GPS | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | AE3 |
| 1 | LBAA0XV2GT | _W_LoRa:LBAA0XV2GT | U1 |
| 1 | MAX-M10S | RF_GPS:ublox_MAX | U5 |
| 1 | MT29F4G01ABAFDWB-IT:F TR | _W_LoRa:SON127P600X800X65-8N | U3 |
| 1 | NRST | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | PCMF1USB3S | _W_SBC:WLCSP52-1-2_NEX | U4 |
| 1 | PinOUT | Connector_PinHeader_2.54mm:PinHeader_2x15_P2.54mm_Vertical | J2 |
| 1 | RED | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | STM32L552CCUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U2 |
| 1 | SUB-GHz | Connector_Coaxial:SMA_Molex_73251-1153_EdgeMount_Horizontal | AE2 |
| 1 | USB_B_Micro | Connector_USB:USB_Mini-B_Wuerth_65100516121_Horizontal | J1 |
Questions
How big is the LR1121 PCB?
It measures 50 × 85 mm and has 4 copper layers, 1.6 mm thick.
What parts does the LR1121 use?
68 parts, built around the LBAA0XV2GT-001, MAX-M10S and PCMF1USB3SZ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LR1121 KiCad files?
From the WilliamSanchez/Hardware repository on GitHub, at the commit this page was made from: the board is LoRa/LR1121/LR1121/LR1121.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LR1121 design in my own project?
Its repository states no licence, so its author keeps all rights: ask WilliamSanchez before reusing the design.
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