2 layers18 × 9 mm
2 layers56 × 6.2 mm
Ring pcb
dezash123/ring-pcb2- Size
- 56 × 6.2 mm
- Copper layers
- 2
- Thickness
- 0.1 mm
- Parts
- 60
- Nets
- 49
- Pads
- 298
- Tracks, vias
- 508, 120
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Sep 2025
- Updated
- 14 Nov 2025
Overview
Ring pcb is an open-source printed circuit board by dezash123, from the dezash123/ring-pcb repository on GitHub. It is a 2-layer board of 56 × 6.2 mm with 60 parts on 49 nets, routed with 508 tracks and 120 vias.
It is built around the NRF52833-QDAA-R, MAX30102EFD+T and TMP117AIDRVR, with the BQ29700DSE, LSM6DSOX and TPS7A2018PDQN among its other parts. Its parts include 29 capacitors, 8 ICs, 5 resistors, 4 inductors and 2 transistors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
11
NRF52833-QDAA-R
QFN-40-EP(5x5)QFN-40-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSNordic SemiconMicrocontrollers (MCU/MPU/SOC)
MAX30102EFD+T
OESIP-14-40℃~+85℃ 1.2mA 1.7V~2V 18bit I2C OESIP-14 Heart Rate Sensors ROHSMaxim Integrated (Analog Devices)Heart Rate Sensors
TMP117AIDRVR
WDFN-6-EP(2x2)-55℃~+150℃ 1.7V~5.5V 15.5ms 16bit 3.1uA Factory temperature calibration、Temperature threshold monitoring、Low-power standby、On-chip non-volatile parameter storage、On-chip digital filtering/averaging I2C、SMBus ±0.1℃ WDFN-6-EP(2x2) Temperature Sensors ROHSTexas InstrumentsTemperature Sensors
BQ29700DSE
WSON-6(1.5x1.5)-40℃~+85℃ 1 2.8V 300mV~8V 4uA Lithium Battery Not supported Overcharge protection、Over-discharge protection、Overcurrent Protection、Short-Circuit Protection Protection IC Support WSON-6(1.5x1.5) Battery Management ROHSTexas InstrumentsBattery Management
LSM6DSOX
LGA-146-Axis IMU (Inertial Measurement Unit) with Embedded AI: Always-On 3-Axis Accelerometer and 3-Axis GyroscopeSTMicroelectronicsAccelerometers
TPS7A2018PDQN
X2-SON-4-EP(1x1)-40℃~+125℃@(Tj) 1 1.8V 10uVrms 140mV@(300mA) 300mA 6V 8.5uA 92dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive X2-SON-4-EP(1x1) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CSD13380F3T
PicoStar-3-55℃~+150℃ 1 N-channel 1.2nC@4.5V 1.3V 1.4W 105pF 12.5pF 12V 156pF 3.6A 76mΩ@4.5V N-Channel ±8V PicoStar-3 MOSFETs ROHSTexas InstrumentsMOSFETs
3110M4-32.768DTTLLLL
SMD1210-4P-40℃~+85℃ 12.5pF 32.768kHz 80kΩ Crystal Oscillator ±20ppm ±20ppm SMD1210-4P Crystals ROHSHCICrystals8J32076001
SMD1210-4P-20℃~+70℃ 32MHz 6pF Crystal Oscillator ±10ppm SMD1210-4P Crystals ROHSTXC CorpCrystals
ESD9B5.0ST5G
SOD-923(0402)-55℃~+125℃ 1 10V 15pF 5V 8.4V 80W@8/20us 80nA 8A@8/20us Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOD-923(0402) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)IM72D128V01
PG-LLGA-5-3PG-LLGA-5-3 New Arrivals ROHSInfineon TechnologiesUncategorised
Parts
60| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | C_0201_0603Metric:C_0201_0603Metric | C3, C7, C8, C12, C19, C21, C22, C23, C25, C26 |
| 4 | TestPoint_Pad_D1.0mm:TestPoint_Pad_D1.0mm | TP1, TP3, TP4, TP6 | |
| 4 | 1uF | C_0402_1005Metric:C_0402_1005Metric | C6, C14, C24, C27 |
| 3 | 1uF | C_0201_0603Metric:C_0201_0603Metric | C1, C28, C29 |
| 2 | TestPoint_Pad_D2.0mm:TestPoint_Pad_D2.0mm | TP2, TP5 | |
| 2 | 12pF | C_0201_0603Metric:C_0201_0603Metric | C10, C11 |
| 2 | 4.7k | R_0201_0603Metric:R_0201_0603Metric | R1, R2 |
| 2 | 5pF | C_0201_0603Metric:C_0201_0603Metric | C4, C9 |
| 2 | CSD13380F3T | Texas_PicoStar_DFN-3_0.69x0.60mm:Texas_PicoStar_DFN-3_0.69x0.60mm | Q1, Q2 |
| 1 | 1.2pF | C_0201_0603Metric:C_0201_0603Metric | C17 |
| 1 | 100pF | C_0201_0603Metric:C_0201_0603Metric | C13 |
| 1 | 10k | R_0201_0603Metric:R_0201_0603Metric | R3 |
| 1 | 10uF | C_0402_1005Metric:C_0402_1005Metric | C18 |
| 1 | 10uH | L_0603_1608Metric:L_0603_1608Metric | L1 |
| 1 | 15nH | L_0402_1005Metric:L_0402_1005Metric | L2 |
| 1 | 1pF | C_0201_0603Metric:C_0201_0603Metric | C16 |
| 1 | 2.2k | R_0201_0603Metric:R_0201_0603Metric | R4 |
| 1 | 2.2nH | L_0201_0603Metric:L_0201_0603Metric | L4 |
| 1 | 2.2uF | C_0201_0603Metric:C_0201_0603Metric | C2 |
| 1 | 3110M4-32.768DTTLLLL | Crystal_SMD_1210-4Pin_1.2x1.0mm:Crystal_SMD_1210-4Pin_1.2x1.0mm | Y2 |
| 1 | 330 | R_0201_0603Metric:R_0201_0603Metric | R5 |
| 1 | 4.7nH | L_0201_0603Metric:L_0201_0603Metric | L3 |
| 1 | 4.7uF | C_0402_1005Metric:C_0402_1005Metric | C20 |
| 1 | 4.7uF | C_0603_1608Metric:C_0603_1608Metric | C5 |
| 1 | 47nF | C_0201_0603Metric:C_0201_0603Metric | C15 |
| 1 | 8J32076001 | Crystal_SMD_1210-4Pin_1.2x1.0mm:Crystal_SMD_1210-4Pin_1.2x1.0mm | Y1 |
| 1 | ? | PinHeader_1x03_P1.00mm_Vertical_SMD_Pin1Left:PinHeader_1x03_P1.00mm_Vertical_SMD_Pin1Left | U6 |
| 1 | ? | Texas_SWRA117D_2.4GHz_Left:Texas_SWRA117D_2.4GHz_Left | J1 |
| 1 | ? | Battery:Battery | BT1 |
| 1 | BQ27427YZFR | BGA-9_1.6x1.6mm_Layout3x3_P0.5mm:BGA-9_1.6x1.6mm_Layout3x3_P0.5mm | U1 |
| 1 | BQ29700 | WSON-6_1.5x1.5mm_P0.5mm:WSON-6_1.5x1.5mm_P0.5mm | U2 |
| 1 | ESD9B5.0ST5G | D_SOD-923:D_SOD-923 | D1 |
| 1 | IM72D128V01 | Infineon_PG-LLGA-5-1:Infineon_PG-LLGA-5-1 | MK1 |
| 1 | LSM6DSOX | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U5 |
| 1 | MAX30102EFD+T | Maxim_OLGA-14_3.3x5.6mm_P0.8mm:Maxim_OLGA-14_3.3x5.6mm_P0.8mm | U4 |
| 1 | TMP117AIDRVR | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U7 |
| 1 | TPS7A2018PDQN | Texas_X2SON-4_1x1mm_P0.65mm:Texas_X2SON-4_1x1mm_P0.65mm | U8 |
| 1 | nRF52833-QDAA | Modified_QFN-40_5.0mmx5.0mm:Modified_QFN-40_5.0mmx5.0mm | U3 |
Questions
How big is the Ring pcb PCB?
It measures 56 × 6.2 mm and has 2 copper layers, 0.1 mm thick.
What parts does the Ring pcb use?
60 parts, built around the NRF52833-QDAA-R, MAX30102EFD+T, TMP117AIDRVR and BQ29700DSE. 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 Ring pcb KiCad files?
From the dezash123/ring-pcb repository on GitHub, at the commit this page was made from: the board is layout/layout.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ring pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask dezash123 before reusing the design.
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