4 layers136.2 × 25 mm
4 layers37 × 25 mm
NRF52840-microstamp
cheyao/nRF52840-microstamp1nRF52840 Stamp for easy low powered bluetooth applications
- Size
- 37 × 25 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 81
- Pads
- 356
- Tracks, vias
- 634, 160
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 10 Jul 2026
- Updated
- 10 Jul 2026
Overview
NRF52840-microstamp is an open-source printed circuit board by cheyao, from the cheyao/nRF52840-microstamp repository on GitHub. It is a 4-layer board of 37 × 25 mm with 50 parts on 81 nets, routed with 634 tracks and 160 vias.
It is built around the RT9013-30B, TP4057 and TPD2EUSB30ADRT, with the AO3401A and BAT60A among its other parts. Its parts include 22 capacitors, 6 resistors, 5 inductors, 4 ICs and 4 connectors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
5
RT9013-30B
SOT23-5SOT23-5 New Arrivals ROHSRichtek TechUncategorised
TP4057
SOT-23-6-40℃~+85℃ 1 25uA 4.24V 4V~6.5V Charging IC Lithium Battery Not supported SOT-23-6 Battery Management ROHSTECH PUBLICBattery Management
TPD2EUSB30ADRT
SOT(9x3)-40℃~+85℃ 0.7pF 2 3.6V 4.5V 45W@8/20us 5A@8/20us 8V ESD IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT(9x3) ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD And Surge Protection (TVS/ESD)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
BAT60A
SOD-323Schottky DiodesSlkor
README
README.mdnRF52840 microstamp
nRF52840 devboard in a stamp format with castellated holes and easy breakout. It maintains a tiny footprint and a easy to use form. With an integrated ldo and battery charger, it is perfect for low power applications
Features:
- Small stamp of 37x25mm
- nRF52840
- Integrated battery charger
- Nice look
- EMC controlled
- Onboard antenna
| Item | Price |
|---|---|
| PCB PCBA + shipping | $287.60 |
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric | C8, C18, C19, C20 |
| 4 | 15pF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C11, C17, C21, C22 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C13, C14, C15, C16 |
| 3 | 1.5k | Resistor_SMD:R_0402_1005Metric | R3, R4, R5 |
| 2 | 10uH | Inductor_SMD:L_0603_1608Metric | L2, L4 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 0.5pF | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 0.8pF | Capacitor_SMD:C_0402_1005Metric | C5 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 10M | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 15nH | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 32.768kHz 12.5pF | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 32MHz 12pF | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 4.7nH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C7 |
| 1 | 47nF | Capacitor_SMD:C_0402_1005Metric | C12 |
| 1 | 6.8nH | Inductor_SMD:L_0402_1005Metric | L5 |
| 1 | 820pF | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Antenna_Chip | nrf52:Walsin_RFANT3216120A5T | AE1 |
| 1 | BAT60A | Diode_SMD:D_SOD-323 | D3 |
| 1 | Conn_01x10 | PCM_ckl-castellated-2.00mm:Castellated_1x10_P2.00mm_Vertical | J2 |
| 1 | Conn_01x14 | PCM_ckl-castellated-2.00mm:Castellated_1x14_P2.00mm_Vertical | J3 |
| 1 | Conn_01x16 | PCM_ckl-castellated-2.00mm:Castellated_1x16_P2.00mm_Vertical | J5 |
| 1 | Fuse | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | RT9013 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | TP4057 | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
| 1 | TPD2EUSB30A | Package_TO_SOT_SMD:Texas_DRT-3 | U4 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | USB_C_Receptacle_USB2.0_14P | PCM_ckl-connector:USB_C_Receptacle_SHOU-HAN_TYPE-16P | J1 |
| 1 | nRF52840 | Package_DFN_QFN:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
The 49 most common of 50 parts.
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Questions
How big is the NRF52840-microstamp PCB?
It measures 37 × 25 mm and has 4 copper layers, 1.6 mm thick.
What parts does the NRF52840-microstamp use?
50 parts, built around the RT9013-30B, TP4057, TPD2EUSB30ADRT and AO3401A. 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 NRF52840-microstamp KiCad files?
From the cheyao/nRF52840-microstamp repository on GitHub, at the commit this page was made from: the board is hardware/nrf52840-microstamp.kicad_pcb and its schematic hardware/nrf52840-microstamp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the NRF52840-microstamp design in my own project?
Its repository states no licence, so its author keeps all rights: ask cheyao before reusing the design.