4 layers95 × 67 mm
4 layers40 × 17.6 mm
- Size
- 40 × 17.6 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 93
- Nets
- 92
- Pads
- 347
- Tracks, vias
- 603, 280
- Pours
- 24
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 24 Jun 2019
- Updated
- 25 Jul 2019
Overview
Nk LoRa is an open-source printed circuit board by Nitrokey, from the Nitrokey/nitrokey-lora-hardware repository on GitHub. It is a 4-layer board of 40 × 17.6 mm with 93 parts on 92 nets, routed with 603 tracks and 280 vias.
It is built around the CP2102N-A01-GQFN24, ESP32-D0WD and SX1261IMLTRT, with the DF5A5.6JE,LM, TLV75733PDBVR-MS and 0868AT43A0020E among its other parts. Its parts include 37 capacitors, 21 resistors, 8 inductors, 6 ICs and 4 crystals. It belongs with the radio and wireless boards and the ESP32 boards of this library.
Main components
8
CP2102N-A01-GQFN24
QFN-24-EP(4x4)3Mbps 3V~3.6V Transceiver QFN-24-EP(4x4) USB Converters ROHSSilicon LabsUSB Converters
ESP32-D0WD
QFN-48-EP(5x5)-40℃~+125℃ -98dBm 130mA 150Mbps 2.3V~3.6V 2.412GHz~2.484GHz 2.4GHz 20dBm 95mA Bluetooth、WiFi SPI、UART、ADC、I2C、I2S、PWM、SDIO Supports FEC function、CRC check function、DMA function transceiver QFN-48-EP(5x5) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICsSX1261IMLTRT
QFN-24-EP(4x4)-148dBm -40℃~+85℃ 1.8V~3.7V 150MHz~960MHz 15dBm 15mA 300Kbps 4.2mA ISM SPI Supports software reset、Power-on reset function、Supports RSSI function transceiver QFN-24-EP(4x4) RF Transceiver ICs ROHSSEMTECHRF Transceiver ICs
DF5A5.6JE,LM
SOT-553-51uA 2.5V 5.3V 65pF ESD IEC 61000-4-2 SOT-553-5 ESD and Surge Protection (TVS/ESD) ROHSToshibaESD And Surge Protection (TVS/ESD)
TLV75733PDBVR-MS
SOT-23-5SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIUncategorised
0868AT43A0020E
SMD-40℃~+85℃ 0.8mm 1dBi 20MHz 2mm 3W 50Ω 7mm 868MHz SMA SMD,7x2mm Antennas ROHSJohanson DielectricsAntennas
2450AT45A100E
SMD,9.5x2mm-40℃~+125℃ 1.2mm 1.3dBi、1.5dBi、2.2dBi 100MHz 2.4GHz 2mm 3W 50Ω 9.5mm Patch Antenna SMD,9.5x2mm Antennas ROHSJohanson DielectricsAntennas
MBT3904DW1T1G-HXY
SOT-363Bipolar (BJT)HXY MOSFET
Parts
93| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 47K | Resistor_SMD:R_0402_1005Metric | R13, R14, R15, R16, R17, R18 |
| 6 | debug-pin | footprints:Prog_Pad_Circular | TP1, TP2, TP3, TP4, TP5, TP6 |
| 5 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C6, C9, C10, C11, C15 |
| 5 | Fiducial_0.5mm_Dia_1mm_Outer | Fiducial:Fiducial_0.5mm_Dia_1mm_Outer | FID3, FID3, FID3, FID3, FID3 |
| 4 | 10K | Resistor_SMD:R_0402_1005Metric | R4, R9, R10, R12 |
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C12, C13, C17 |
| 4 | 3.3pF | Capacitor_SMD:C_0402_1005Metric | C23, C25, C28, C31 |
| 3 | 1K | Resistor_SMD:R_0402_1005Metric | R1, R2, R11 |
| 2 | 1.8pF | Capacitor_SMD:C_0402_1005Metric | C27, C40 |
| 2 | 100R | Resistor_SMD:R_0402_1005Metric | R20, R21 |
| 2 | 10nF | Capacitor_SMD:C_0402_1005Metric | C4, C22 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C8, C16 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C26, C29 |
| 2 | 22pF/6.3V(10%) | Capacitor_SMD:C_0402_1005Metric | C2, C3 |
| 2 | 47nH | Inductor_SMD:L_0402_1005Metric | L2, L11 |
| 2 | 9.1nH | Inductor_SMD:L_0402_1005Metric | L3, L5 |
| 1 | 0868AT43A0020E | footprints:Ant_868MHz_0868AT43A0020E | ANT2 |
| 1 | 1.0pF | Capacitor_SMD:C_0402_1005Metric | C41 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C24 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 12pF | Capacitor_SMD:C_0402_1005Metric | C30 |
| 1 | 15uH | Inductor_SMD:L_0805_2012Metric | L9 |
| 1 | 18nH | Inductor_SMD:L_0402_1005Metric | L10 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 2.4nH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 2.4pF | Capacitor_SMD:C_0402_1005Metric | C20 |
| 1 | 2.7nH | Inductor_SMD:L_0402_1005Metric | L12 |
| 1 | 20K | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 22.1K | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 22pF | Capacitor_SMD:C_0402_1005Metric | C7 |
| 1 | 2450AT45A100E | footprints:9520_WiFiChipAntenna | ANT1 |
| 1 | 3,3nF | Capacitor_SMD:C_0402_1005Metric | C5 |
| 1 | 3.0pF | Capacitor_SMD:C_0402_1005Metric | C35 |
| 1 | 390R | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 4.7pF | Capacitor_SMD:C_0402_1005Metric | C19 |
| 1 | 47.5K | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 470nF | Capacitor_SMD:C_0402_1005Metric | C21 |
| 1 | 47nF | Capacitor_SMD:C_0402_1005Metric | C37 |
| 1 | 47pF | Capacitor_SMD:C_0402_1005Metric | C38 |
| 1 | 50K | Resistor_SMD:R_0402_1005Metric | R19 |
| 1 | 6.8pF | Capacitor_SMD:C_0402_1005Metric | C39 |
| 1 | CP2102N-A01-GQFN24 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U5 |
| 1 | DF5A5.6JE | Package_TO_SOT_SMD:SOT-553 | U4 |
| 1 | ESP32-D0WD | footprints:QFN-48-1EP_5x5mm_P0.35mm_EP3.7x3.7mm_ThermalVias | U2 |
| 1 | FA-128 40MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | X1 |
| 1 | FTR5092-A2 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | Fiducial_0.5mm_Dia_1mm_Outer | footprints:Fiducial_0.5mm_Dia_1mm_Outer | FID3 |
| 1 | LED_0402 | footprints:LED_0402_1005Metric | D1 |
| 1 | MBT3904DW1T1G | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q1 |
| 1 | Micro_SD_Card_Molex_475710001 | footprints:47571-0001 | X3 |
| 1 | RF-Switch_pSemi_4259-63 | footprints:SC-70-6 | U6 |
| 1 | SX1261IMLTRT | footprints:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias | U3 |
| 1 | TLV75733PDBVR | footprints:SOT-23-5 | U1 |
| 1 | USB_Plug | footprints:USB-A-PLUG | X2 |
| 1 | case_bottom | footprints:case_bottom | 3D_* |
Questions
How big is the Nk LoRa PCB?
It measures 40 × 17.6 mm and has 4 copper layers, 1 mm thick.
What parts does the Nk LoRa use?
93 parts, built around the CP2102N-A01-GQFN24, ESP32-D0WD, SX1261IMLTRT and DF5A5.6JE,LM. 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 Nk LoRa KiCad files?
From the Nitrokey/nitrokey-lora-hardware repository on GitHub, at the commit this page was made from: the board is nk-LoRa.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nk LoRa design in my own project?
Its repository states no licence, so its author keeps all rights: ask Nitrokey before reusing the design.
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