4 layers99.5 × 89 mm
4 layers18 × 33.5 mm
NRFMicro
KunYi/nRFMicro- Size
- 18 × 33.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 91
- Pads
- 302
- Tracks, vias
- 857, 164
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Aug 2025
- Updated
- 15 Sep 2025
Overview
NRFMicro is an open-source printed circuit board by KunYi, from the KunYi/nRFMicro repository on GitHub. It is a 4-layer board of 18 × 33.5 mm with 65 parts on 91 nets, routed with 857 tracks and 164 vias.
It is built around the NRF52840-QIAA-R, W25Q128JVSIQ and BQ25185DLHR, with the USBLC6-2P6, XC6220B331ER-G and NSR0320MW2 among its other parts. Its parts include 27 capacitors, 18 resistors, 5 ICs, 5 inductors and 2 diodes. It belongs with the nRF52 and nRF5x boards of this library.
Main components
7
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
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
BQ25185DLHR
WSON-10-EP(2.2x2)-40℃~+125℃ 1 1A 2.2V 3V~18V 4.4V 4uA Charging IC Lithium Battery、LiFePO4 Battery Support WSON-10-EP(2.2x2) Battery Management ROHSTexas InstrumentsBattery Management
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
XC6220B331ER-G
USP-6C-40℃~+85℃@(Ta) 1 1A 3.3V 50dB@(1kHz) 60mV@(300mA) 6V 8uA Fixed Over Current Protection、Over Temperature Protection、Thermal Shutdown Positive USP-6C Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
NSR0320MW2
SOD-323-55℃~+125℃ 1 Independent 1A 20V 500mV@900mA 50uA@15V 5A SOD-323 Schottky Diodes ROHSonsemiSchottky DiodesPMDT290UCE
SOT-666-55℃~+150℃ 1 N-Channel + 1 P-Channel 20V 290mΩ@4.5V、670mΩ@4.5V 500mW 550mA、800mA 680pC@4.5V 7pF、12pF 83pF 950mV SOT-666 MOSFETs ROHSNexperiaMOSFETs
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | nRFMicro:C_0402_1005Metric | C4, C5, C8, C9, C12, C26, C27 |
| 6 | 4u7 | nRFMicro:C_0402_1005Metric | C15, C16, C17, C18, C19, C25 |
| 4 | 12pF | nRFMicro:C_0402_1005Metric | C6, C7, C22, C23 |
| 4 | 22 | nRFMicro:R_0402_1005Metric | R3, R4, R5, R6 |
| 3 | 100p | nRFMicro:C_0402_1005Metric | C10, C13, C14 |
| 3 | 15n | nRFMicro:L_0402_1005Metric | L2, L3, L4 |
| 3 | 1K5 | nRFMicro:R_0402_1005Metric | R8, R12, R16 |
| 2 | 100K | nRFMicro:R_0402_1005Metric | R13, R15 |
| 2 | 10u | nRFMicro:L_0603_1608Metric | L1, L5 |
| 2 | 1M | nRFMicro:R_0402_1005Metric | R17, R18 |
| 2 | 2u2 | nRFMicro:C_0402_1005Metric | C20, C21 |
| 2 | 5K1 | nRFMicro:R_0402_1005Metric | R1, R2 |
| 1 | 10K | nRFMicro:StrappingJumpR | R10 |
| 1 | 10u | nRFMicro:C_0402_1005Metric | C24 |
| 1 | 18K | nRFMicro:R_0402_1005Metric | R9 |
| 1 | 1K | nRFMicro:R_0402_1005Metric | R7 |
| 1 | 1u | nRFMicro:C_0402_1005Metric | C2 |
| 1 | 1uF | nRFMicro:C_0402_1005Metric | C1 |
| 1 | 2M | nRFMicro:R_0402_1005Metric | R11 |
| 1 | 32K768 | nRFMicro:SMD2016-2P | X2 |
| 1 | 32MHz, CL=8pF, <= 40ppm | nRFMicro:Crystal_SMD_SeikoEpson_FA128-4Pin_2.0x1.6mm | X1 |
| 1 | 390K | nRFMicro:R_0402_1005Metric | R14 |
| 1 | 47n | nRFMicro:C_0402_1005Metric | C3 |
| 1 | 820p | nRFMicro:C_0402_1005Metric | C11 |
| 1 | BLED | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | BQ25185DLHR | nRFMicro:BQ25185DLHR | U3 |
| 1 | MIFA | nRFMicro:BLE_ANTENNA | AE1 |
| 1 | NSR0320 | Diode_SMD:D_SOD-323 | D1 |
| 1 | PMDT290UCE | nRFMicro:SOT-666 | Q1 |
| 1 | SWD | nRFMicro:SWD_CONNECTOR | J4 |
| 1 | USBLC6-2P6 | nRFMicro:USBLC6-2P6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | nRFMicro:USB-C_C168688 | J3 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U5 |
| 1 | XC6220B331ER | nRFMicro:USP6-C | U4 |
| 1 | nRF52840-QIAA | nRFMicro:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
| 1 | ~ | nRFMicro:ProMicroPinHeader | BP1 |
| 1 | ~ | nRFMicro:StrappingJump | SJ1 |
Questions
How big is the NRFMicro PCB?
It measures 18 × 33.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the NRFMicro use?
65 parts, built around the NRF52840-QIAA-R, W25Q128JVSIQ, BQ25185DLHR and USBLC6-2P6. 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 NRFMicro KiCad files?
From the KunYi/nRFMicro repository on GitHub, at the commit this page was made from: the board is nRFMicro.kicad_pcb and its schematic nRFMicro.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the NRFMicro design in my own project?
Its repository states no licence, so its author keeps all rights: ask KunYi before reusing the design.
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