4 layers101.6 × 76.2 mm
2 layers180 × 50 mm
Nixieboard
Sabolik/nixie-clock-hw- Size
- 180 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 191
- Nets
- 180
- Pads
- 643
- Tracks, vias
- 1,378, 242
- Pours
- 14
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Sep 2025
- Updated
- 11 Apr 2026
Overview
Nixieboard is an open-source printed circuit board by Sabolik, from the Sabolik/nixie-clock-hw repository on GitHub. It is a 2-layer board of 180 × 50 mm with 191 parts on 180 nets, routed with 1,378 tracks and 242 vias.
It is built around the ESP32-C3-WROOM-02-H4, LM3478MM and 74HC595, with the MCP100-270DI/TO, MCP1703A-3302E/MB and PMBTA42 among its other parts. Its parts include 64 transistors, 37 resistors, 33 capacitors, 10 ICs and 7 diodes. It belongs with the ESP32 and RISC-V boards of this library.
Main components
9
ESP32-C3-WROOM-02-H4
SMD,20x18mm-105dBm -40℃~+105℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LM3478MM
MSOP-8-40℃~+125℃@(TJ) 1 1MHz 2.97V~40V Boost Boost、SEPIC、Flyback External No MSOP-8 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
MCP100-270DI/TO
TO-92-3-40℃~+85℃@(TA) 1 150ms 2.625V Active Low Push-pull Simple Reset/Power-On Reset TO-92-3 Supervisor and Reset ICs ROHSMicrochip TechnologySupervisor And Reset ICs
MCP1703A-3302E/MB
SOT-89-3-40℃~+125℃@(Tj) 1 16V 250mA 2uA 3.3V 35dB@(100Hz) 625mV@(250mA) Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PMBTA42
SOT-23-65℃~+150℃ 1 NPN 100mA 100nA 25 250mW 300V 500mV 50MHz 6V NPN SOT-23 Bipolar (BJT) ROHSNexperiaBipolar (BJT)
MMSD4148
SOD-123-55℃~+150℃@(Tj) 100V 1V@10mA 200mA 425mW 4ns 5uA@75V Independent SOD-123 Switching Diodes ROHSonsemiSwitching DiodesBSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
USB4110-GF-A
SMD-40℃~+85℃ 1 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.md
HW
-
ESP32-C3 MCU
-
DC/DC, non-isolated PWM power converter
-
USB-C 5V power input
-
up to 6 nixie tubes
Parts
191| Qty | Value | Footprint | References |
|---|---|---|---|
| 62 | PMBTA42 | Package_TO_SOT_SMD:SOT-23 | Q1001, Q1002, Q1003, Q1004, Q1005, Q1006, Q1007, Q1008, Q1009, Q1010, Q1101, Q1201, Q1202, Q1203, Q1204, Q1205 +46 |
| 15 | 1u/16V | Capacitor_SMD:C_0805_2012Metric | C101, C102, C205, C208, C213, C215, C301, C302, C303, C501, C601, C701, C901, C1001, C1201 |
| 14 | 3k3 | Resistor_SMD:R_0603_1608Metric | R501, R502, R601, R602, R701, R702, R801, R901, R902, R1001, R1002, R1101, R1201, R1202 |
| 11 | TEST | TestPoint:TestPoint_Pad_D1.5mm | TP301, TP302, TP303, TP304, TP305, TP306, TP307, TP308, TP309, TP310, TP311 |
| 7 | 1u/100V | Capacitor_SMD:C_1206_3216Metric | C210, C211, C212, C214, C216, C217, C218 |
| 7 | MMSD4148 | Diode_SMD:D_SOD-123 | D201, D202, D203, D204, D205, D206, D207 |
| 6 | 15k | Resistor_SMD:R_1206_3216Metric | R503, R603, R703, R903, R1003, R1203 |
| 6 | 74HC595 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U501, U601, U701, U901, U1001, U1201 |
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H101, H102, H103, H104, H105, H106 |
| 6 | MountingHole | MountingHole:MountingHole_5.3mm_M5 | H501, H601, H701, H901, H1001, H1201 |
| 6 | NixieTube | Nixie:Zxxx | NIX501, NIX601, NIX701, NIX901, NIX1001, NIX1201 |
| 5 | 10k | Resistor_SMD:R_0805_2012Metric | R201, R202, R301, R302, R303 |
| 5 | 47u/10V | Capacitor_SMD:C_1206_3216Metric | C201, C202, C203, C204, C207 |
| 4 | 100n/250V | Capacitor_SMD:C_1206_3216Metric | C219, C220, C221, C222 |
| 2 | 120k | Resistor_SMD:R_1206_3216Metric | R802, R1102 |
| 2 | 22n | Capacitor_SMD:C_0805_2012Metric | C206, C209 |
| 2 | 27R | Resistor_SMD:R_0805_2012Metric | R104, R105 |
| 2 | 3k3 | Resistor_SMD:R_0805_2012Metric | R101, R206 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric | R102, R103 |
| 2 | Lamp_Neon | Nixie:Neon | NE801, NE1101 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_PTS645 | SW101, SW102 |
| 1 | 0R025 | Resistor_SMD:R_0805_2012Metric | R205 |
| 1 | 120Ohm@100MHz | Inductor_SMD:L_0805_2012Metric | L101 |
| 1 | 120k | Resistor_SMD:R_0805_2012Metric | R207 |
| 1 | 1500u | Inductor_SMD:L_1812_4532Metric | L202 |
| 1 | 15u | Inductor_SMD:L_Bourns_SRR1208_12.7x12.7mm | L201 |
| 1 | 180k | Resistor_SMD:R_0805_2012Metric | R203 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric | R204 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q201 |
| 1 | DEBUG_UART | Connector_Molex:Molex_PicoBlade_53261-0471_1x04-1MP_P1.25mm_Horizontal | J102 |
| 1 | ESP32-C3-WROOM-02 | PCM_Espressif:ESP32-C3-WROOM-02 | U301 |
| 1 | LM3478MM | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U201 |
| 1 | MCP100-270D | Package_TO_SOT_SMD:SOT-23-3 | U302 |
| 1 | MCP1703A-3302 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U202 |
| 1 | PTC 1.5A | Resistor_SMD:R_1812_4532Metric | F101 |
| 1 | SQJA62EP-T1_GE3 | Package_SO:PowerPAK_SO-8_Single | Q202 |
| 1 | USB4110-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4110 | J101 |
The 190 most common of 191 parts.
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Questions
How big is the Nixieboard PCB?
It measures 180 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Nixieboard use?
191 parts, built around the ESP32-C3-WROOM-02-H4, LM3478MM, 74HC595 and MCP100-270DI/TO. 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 Nixieboard KiCad files?
From the Sabolik/nixie-clock-hw repository on GitHub, at the commit this page was made from: the board is nixieboard.kicad_pcb and its schematic Control.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nixieboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sabolik before reusing the design.