4 layers36 × 46 mm
4 layers80.5 × 50 mm
Low-power Cellular GPS Tracker
- Size
- 80.5 × 50 mm
- Copper layers
- 4
- Thickness
- 1.53 mm
- Parts
- 178
- Nets
- 175
- Pads
- 679
- Tracks, vias
- 994, 611
- Pours
- 621
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 31 May 2023
- Updated
- 21 Oct 2024
Overview
Bwlc1a is an open-source printed circuit board by teapotlaboratories, from the teapotlaboratories/bwlc1a repository on GitHub, published under the MIT licence. It is a 4-layer board of 80.5 × 50 mm with 178 parts on 175 nets, routed with 994 tracks and 611 vias.
It is built around the A7670C-MASL, ESP32-S3-MINI-1-N4R2 and L76L-M33, with the MAX17048G+T10, MCP73831T-2ATI/OT-HXY and ESD5651N among its other parts. Its parts include 54 capacitors, 43 resistors, 13 diodes, 7 inductors and 6 ICs. It belongs with the ESP32 boards of this library.
Main components
12
A7670C-MASL
SMD,24x24mm3.4V~4.2V FDD-LTE、TDD-LTE I2C、USB、UART、GPIO、ADC、SPI、SIM card SMD,24x24mm 2G/3G/4G/5G Modules ROHSSIMCom Wireless Solutions2G/3G/4G/5G Modules
ESP32-S3-MINI-1-N4R2
SMD-103.5dBm -40℃~+85℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD WiFi Modules ROHSEspressif SystemsWiFi Modules
L76L-M33
SMD-18P-165dBm -40℃~+85℃ 2.8V~4.3V SMD-18P GNSS Modules ROHSQuectelGNSS Modules
MAX17048G+T10
DFN-8-EP(2x2)-40℃~+85℃ 1 2.5V~4.5V 3uA I2C Lithium Battery Not supported Not supported DFN-8-EP(2x2) Battery Management ROHSMaxim Integrated (Analog Devices)Battery Management
MCP73831T-2ATI/OT-HXY
SOT-23-5LBattery ManagementHXY MOSFETESD5651N
DFN1006-2L-55℃~+150℃ 100pF 12V 200nA 4.5V 4.8V 40A 480W Bidirectional ESD IEC 61000-4-2 DFN1006-2L ESD and Surge Protection (TVS/ESD) ROHSGOODWORKUncategorised
0402CG120J500NT
040212pF 50V C0G ±5% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSGuangdong Fenghua Advanced Tech (FH)Multilayer Ceramic Capacitors MLCC - SMD/SMT
T520B337M006ATE040
CASE-B-3528-21(mm)-55℃~+85℃ 330uF 40mΩ@100kHz 6.3V ±20% CASE-B-3528-21(mm) Tantalum Capacitors ROHSKEMETTantalum Capacitors
CC0603JRNPO9BN330
060333pF 50V NP0 ±5% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT0402CG330J500NT
040233pF 50V C0G ±5% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSGuangdong Fenghua Advanced Tech (FH)Multilayer Ceramic Capacitors MLCC - SMD/SMT
BWIPX-1-001E
SMD-40℃~+85℃ 1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Inner pin SMD Coaxial Connectors (RF) ROHSBAT WIRELESSCoaxial Connectors (RF)
ESDA6V1W5-TP
SOT-353-55℃~+125℃ 100nA 14V 150W@8/20us 5V 60pF 9V ESD IEC 61000-4-2、IEC 61000-4-4 SOT-353 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdblwc1a
Low-power Cellular GPS Tracker
Parts
178| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C6, C8, C9, C12, C15, C25, C29, C38 |
| 9 | 10u | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C7, C11, C20, C21, C22, C42 |
| 8 | 0 | Resistor_SMD:R_0402_1005Metric | R5, R24, R25, R28, R34, R35, R36, R37 |
| 8 | 4k7 | Resistor_SMD:R_0402_1005Metric | R14, R18, R22, R23, R26, R27, R29, R31 |
| 7 | 10k | Resistor_SMD:R_0402_1005Metric | R7, R8, R9, R10, R11, R15, R33 |
| 6 | ESD5651N | Diode_SMD:D_SOD-882 | D2, D3, D6, D8, D10, D11 |
| 5 | 100n | Capacitor_SMD:C_0603_1608Metric | C39, C40, C41, C46, C55 |
| 4 | 1u | Capacitor_SMD:C_0603_1608Metric | C24, C26, C44, C45 |
| 4 | 22 | Resistor_SMD:R_0402_1005Metric | R16, R17, R20, R21 |
| 4 | DNP | Capacitor_SMD:C_0402_1005Metric | C35, C36, C48, C49 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R4, R41, R42 |
| 3 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2, R19 |
| 2 | 100u | Capacitor_SMD:C_0805_2012Metric | C31, C32 |
| 2 | 12p | Capacitor_SMD:C_0402_1005Metric | C16, C17 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | 1n | Capacitor_SMD:C_0402_1005Metric | C33, C37 |
| 2 | 330u | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B | C18, C19 |
| 2 | 33p | Capacitor_SMD:C_0603_1608Metric | C13, C14 |
| 2 | 33p | Capacitor_SMD:C_0402_1005Metric | C28, C47 |
| 2 | 47k | Resistor_SMD:R_0402_1005Metric | R30, R32 |
| 2 | BWIPX-1-001E | bwlc1a:BWIPX-1-001E | J5, J7 |
| 2 | DNP | Resistor_SMD:R_0402_1005Metric | R39, R40 |
| 2 | ESDA6V1W5 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | D4, D9 |
| 2 | ESDBW5V0A1 | Diode_SMD:D_SOD-882 | D5, D7 |
| 2 | KMR233GLFG | bwlc1a:SW-SMD_L3.9-W3.0-P4.45 | SW1, SW2 |
| 2 | LOGO | bwlc1a:TeapotLogo | G***, G*** |
| 2 | PMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q5, Q6 |
| 2 | S8050 | Package_TO_SOT_SMD:SOT-23 | Q3, Q4 |
| 1 | +LIPO | TestPoint:TestPoint_Pad_D1.0mm | TP10 |
| 1 | 0 | Inductor_SMD:L_0603_1608Metric | FB6 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | 0 | Inductor_SMD:L_0402_1005Metric | FB5 |
| 1 | 0p4 | Inductor_SMD:L_0402_1005Metric | FB3 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 10n | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 10p | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 11n | Inductor_SMD:L_0603_1608Metric | FB4 |
| 1 | 120k | Resistor_SMD:R_0603_1608Metric | R43 |
| 1 | 1n3 | Inductor_SMD:L_0402_1005Metric | L6 |
| 1 | 1p2 | Capacitor_SMD:C_0402_1005Metric | C52 |
| 1 | 1p4 | Capacitor_SMD:C_0402_1005Metric | C51 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C30 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R44 |
| 1 | 22u | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 2p | Capacitor_SMD:C_0402_1005Metric | C53 |
| 1 | 2u2 | bwlc1a:IND-SMD_L3.0-W3.0_LVS303015H-2R2M-N | L7 |
| 1 | 32.768 kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 3n | Inductor_SMD:L_0402_1005Metric | L4 |
| 1 | 470p | Capacitor_SMD:C_0402_1005Metric | C34 |
| 1 | 47p | Capacitor_SMD:C_0402_1005Metric | C50 |
| 1 | 47u | Capacitor_SMD:C_0603_1608Metric | C56 |
| 1 | 4n3 | Inductor_SMD:L_0603_1608Metric | L5 |
| 1 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C43 |
| 1 | 6n1 | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 9n5 | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | A7670C | bwlc1a:LGA-124_L24.0-W24.0-P1.0-A7670C-LASS | U9 |
| 1 | AO3407A | Package_TO_SOT_SMD:SOT-23 | Q8 |
| 1 | BLM21PG300SN1D | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | BOOT | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | DMG1012UW | Package_TO_SOT_SMD:SOT-323_SC-70 | Q7 |
| 1 | E6C0603SEAC1UDA | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | ESP32-S3-MINI-1 | bwlc1a:ESP32-S3-MINI-1 | U6 |
| 1 | GPIO03 | TestPoint:TestPoint_Pad_D1.0mm | TP20 |
| 1 | GPIO21 | TestPoint:TestPoint_Pad_D1.0mm | TP16 |
| 1 | GPIO33 | TestPoint:TestPoint_Pad_D1.0mm | TP15 |
| 1 | GPIO34 | TestPoint:TestPoint_Pad_D1.0mm | TP14 |
| 1 | GPIO35 | TestPoint:TestPoint_Pad_D1.0mm | TP13 |
| 1 | GPIO38 | TestPoint:TestPoint_Pad_D1.0mm | TP17 |
| 1 | GPIO45 | TestPoint:TestPoint_Pad_D1.0mm | TP18 |
| 1 | GPIO46 | TestPoint:TestPoint_Pad_D1.0mm | TP19 |
| 1 | L76L-M33 | bwlc1a:L76L-M33 | U7 |
| 1 | LSM6DSOTR | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U4 |
| 1 | LTST-C191KGKT | LED_SMD:LED_0603_1608Metric | D12 |
| 1 | LTST-C191KRKT | LED_SMD:LED_0603_1608Metric | D13 |
| 1 | MAX17048G+ | Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.7x1.3mm | U5 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | MMZ1608B601CTAH0 | Inductor_SMD:L_0603_1608Metric | FB2 |
| 1 | NN03-310 | bwlc1a:NN03-310 | E2 |
| 1 | NN03-320 | bwlc1a:NN03-320 | E1 |
The 154 most common of 178 parts.
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Questions
How big is the Bwlc1a PCB?
It measures 80.5 × 50 mm and has 4 copper layers, 1.53 mm thick.
What parts does the Bwlc1a use?
178 parts, built around the A7670C-MASL, ESP32-S3-MINI-1-N4R2, L76L-M33 and MAX17048G+T10. 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 Bwlc1a KiCad files?
From the teapotlaboratories/bwlc1a repository on GitHub, at the commit this page was made from: the board is hardware/kicad/bwlc1a.kicad_pcb and its schematic hardware/kicad/antenna.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bwlc1a design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).