2 layers22.5 × 62 mm
4 layers40.3 × 68.8 mm
NrfMain
batkay/CapstonePCB- Size
- 40.3 × 68.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 92
- Pads
- 323
- Tracks, vias
- 579, 125
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Feb 2025
- Updated
- 14 Mar 2025
Overview
NrfMain is an open-source printed circuit board by batkay, from the batkay/CapstonePCB repository on GitHub. It is a 4-layer board of 40.3 × 68.8 mm with 76 parts on 92 nets, routed with 579 tracks and 125 vias.
It is built around the NRF52840-QIAA-R, MX25R6435FZAIL0 and AP22814AW5, with the LD39150DT33-R, MAX17048G+T10 and MCP73831-2ACI/OT among its other parts. Its parts include 25 capacitors, 13 resistors, 7 ICs, 5 diodes and 5 connectors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
12
NRF52840-QIAA-R
AQFN-73-EP(7x7)-95dBm 1.7V~5.5V 2.4GHz 2.4GHz~2.4835GHz 2Mbps 4.82mA 6.26mA 8dBm SPI、USB、UART、ADC、I2S、PWM ZigBee、Bluetooth、LoRa、ISM transceiver AQFN-73-EP(7x7) RF Transceiver ICs ROHSNORDICRF Transceiver ICs
MX25R6435FZAIL0
WSON-8-EP(4x4)-40℃~+85℃ 1.65V~3.6V 100,000 cycles 20 Years 3.2ms 64Mbit 80MHz SPI WSON-8-EP(4x4) NOR FLASH ROHSMXICNOR FLASH
AP22814AW5
SOT-25-40℃~+85℃ 1 2.7V~5.5V 3A 50mΩ Active High、Active Low High Side Switch Output discharge function、Soft-start、Under-voltage lockout、Reverse voltage protection、Overcurrent Protection、Over temperature protection、Short-Circuit Protection、Reverse current blocking SOT-25 Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches
LD39150DT33-R
DPAK-40℃~+125℃@(Tj) 1 1.5A 100uVrms 1mA 3.3V 55dB@(1kHz) 6V Fixed Over Current Protection、Over Temperature Protection、Enable Positive DPAK Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
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 ManagementMCP73831-2ACI/OT
SOT-23-5-40℃~+85℃ 1 3.75V~6V 4.2V 53uA 550mA Charging IC Lithium Battery Not supported SOT-23-5 Battery Management ROHSMicrochip TechnologyBattery ManagementS-8211CAZ-M5T1G
SOT-23-5-40℃~+85℃ 1 1.5V~8V 200nA 3V 4.28V Lithium Battery Not supported Protection IC Support SOT-23-5 Battery Management ROHSABLICBattery Management
CC0603KRX7R9BB104
0603100nF 50V X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTCL10A105KB8NNN
06031uF 50V X5R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
RC0603FR-100KL
0603-55℃~+155℃ 100kΩ 100mW 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface MountCC0603JRNPO9BN120
060312pF 50V NP0 ±5% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTCL10A475KO8NNN
060316V 4.7uF X5R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | .1u | Capacitor_SMD:C_0603_1608Metric | C7, C10, C12, C13, C16, C23, C24 |
| 6 | Motor_Servo | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | M1, M2, M3, M4, M5, M6 |
| 5 | 1u | Capacitor_SMD:C_0603_1608Metric | C11, C17, C19, C20, C25 |
| 4 | 100k | Resistor_SMD:R_0603_1608Metric | R7, R8, R9, R13 |
| 4 | 12p | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4 |
| 4 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C8, C9, C14, C15 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R10, R11, R12 |
| 2 | 2.4p | Capacitor_SMD:C_0603_1608Metric | C21, C22 |
| 2 | 2k | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | B340 | Diode_SMD:D_SMC | D1, D4 |
| 2 | MountingHole | MountingHole:MountingHole_2.5mm | H1, H2 |
| 2 | Q_NMOS_GSD | Package_TO_SOT_SMD:TSOT-23 | Q1, Q2 |
| 1 | 0.5p | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 0.8p | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 100p | Capacitor_SMD:C_0603_1608Metric | C18 |
| 1 | 2.4n | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 2337019-1 | Personal:TE_2337019-1 | J5 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 32MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 4.7n | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | AP22814AW5 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | Battery_Cell | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J3 |
| 1 | Conn_01x04 | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J4 |
| 1 | DMG2301L | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | D_TVS | Diode_SMD:D_0402_1005Metric | D5 |
| 1 | FTSH-105-01-F-DV-P-TR | Personal:SAMTEC_FTSH-105-01-F-DV-P-TR | J1 |
| 1 | Fuse | Fuse:Fuse_1210_3225Metric | F1 |
| 1 | LD39150DT33 | Package_TO_SOT_SMD:TO-252-3_TabPin2 | U8 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | LOGO | Personal:cat | G*** |
| 1 | MAX17048 | Package_DFN_QFN:TDFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.2mm | U4 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | MMICT390200012 | Sensor_Audio:Knowles_LGA-5_3.5x2.65mm | MK2 |
| 1 | MX25R6435FZAIL0 | Package_SON:WSON-8-1EP_4x4mm_P0.8mm_EP1.98x3mm | U5 |
| 1 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D3 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
| 1 | nRF52840 | Package_DFN_QFN:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
| 1 | ~ | Personal:Trace Antenna | AE1 |
| 1 | ~ | Package_TO_SOT_SMD:SOT-23-5 | U2 |
Questions
How big is the NrfMain PCB?
It measures 40.3 × 68.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the NrfMain use?
76 parts, built around the NRF52840-QIAA-R, MX25R6435FZAIL0, AP22814AW5 and LD39150DT33-R. 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 NrfMain KiCad files?
From the batkay/CapstonePCB repository on GitHub, at the commit this page was made from: the board is nrfMain.kicad_pcb and its schematic Inputs.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the NrfMain design in my own project?
Its repository states no licence, so its author keeps all rights: ask batkay before reusing the design.
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