2 layers110 × 60 mm
Arduino Spot Welder
KaeptnBalu/Arduino_Spot_Welder_V3
This is the Kicad project for V3.1 The Arduino Board was not changed, only the Mosfet Board got a updgrade.
74 parts207GPL-3.0
2 layers110 × 60 mm
Arduino Spot Welder
KaeptnBalu/Arduino_Spot_Welder_V3207This is the Kicad project for V3.1 The Arduino Board was not changed, only the Mosfet Board got a updgrade.
- Size
- 110 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 53
- Pads
- 204
- Tracks, vias
- 628, 154
- Pours
- 14
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 22 Aug 2017
- Updated
- 9 Apr 2025
Overview
Arduino Spot Welder is an open-source printed circuit board by KaeptnBalu, from the KaeptnBalu/Arduino_Spot_Welder_V3 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 110 × 60 mm with 74 parts on 53 nets, routed with 628 tracks and 154 vias.
It is built around the MCP1407-E/P, IRFB7430PBF and 5.0SMDJ13A. Its parts include 16 resistors, 8 transistors, 6 capacitors, 6 connectors and 3 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
MCP1407-E/P
PDIP-8-40℃~+150℃ 1 130uA 20ns 20ns 4.5V~18V 6A 6A MOSFET PDIP-8 Gate Drivers ROHSMicrochip TechnologyGate Drivers
IRFB7430PBF
TO-220AB-55℃~+175℃ 1 N-channel 1.3mΩ@10V 14.24nF 195A 2.13nF 3.9V 375W 40V 460nC@10V N-Channel TO-220AB MOSFETs ROHSInfineon TechnologiesMOSFETs
5.0SMDJ13A
SMC(DO-214AB)-55℃~+150℃ 13V 14.4V 21.5V 233A 2uA 5kW TVS Unidirectional SMC(DO-214AB) ESD and Surge Protection (TVS/ESD) ROHSBournsESD And Surge Protection (TVS/ESD)
README
KiCad_PCB_Files/Kicad Project/Kicad Project V3.1/README.mdThis is the Kicad project for V3.1 The Arduino Board was not changed, only the Mosfet Board got a updgrade.
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 30 | Resistors_SMD:R_1206_HandSoldering | R2, R3, R4, R5, R6, R7, R8, R9 |
| 8 | IRFB_7430 | pots_own:TO-220__long_Neutral123_Horizontal_LargePads | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 8 | TVS-SMAJ13A-13-F | Diodes_SMD:D_SMA | D_M1, D_M2, D_M3, D_M4, D_M5, D_M6, D_M7, D_M8 |
| 5 | 10k | Resistors_SMD:R_1206_HandSoldering | R12, R13, R14, R15, R16 |
| 4 | 5.0SMDJ13A | Diodes_SMD:D_SMC_Handsoldering | TVS1, TVS2, TVS3, TVS4 |
| 3 | 10nF | Capacitors_SMD:C_1210_HandSoldering | C3, C4, C6 |
| 2 | AutoPulse | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | P3, P5 |
| 2 | CONN_01X08 | pots_own:Pin_Header_Straight_1x08_Pitch2.54mm_Large_Pads | Mosfet_CTRL1, Mosfet_CTRL2 |
| 2 | GND_con | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | P2, P4 |
| 1 | 0.1µF | Capacitors_SMD:C_1210_HandSoldering | C1 |
| 1 | 12V | Wire_Pads:SolderWirePad_single_1mmDrill | W2 |
| 1 | 150 | Resistors_SMD:R_2512_HandSoldering | R1 |
| 1 | 1µF | Capacitors_ThroughHole:C_Disc_D7.5mm_W5.0mm_P5.00mm | C2 |
| 1 | 3.3k | Resistors_SMD:R_1206_HandSoldering | R11 |
| 1 | 470µF | Capacitors_SMD:CP_Elec_10x10 | C5 |
| 1 | 620 | Resistors_SMD:R_1206_HandSoldering | R10 |
| 1 | Bourns_PEC11L | Rotary-Encoders:ALPS_STEC12E08 | ENC1 |
| 1 | CONN_01X02 | Connectors_Molex:Molex_KK-6410-02_02x2.54mm_Straight | Foot_Switch1 |
| 1 | D | Diodes_SMD:D_SMA_Handsoldering | D1 |
| 1 | D_Schottky_BAV99 | TO_SOT_Packages_SMD:SOT-23 | D4 |
| 1 | GND | Wire_Pads:SolderWirePad_single_1mmDrill | W1 |
| 1 | MCP1407 | Housings_DIP:DIP-8_W7.62mm_Socket_LongPads | P1 |
| 1 | OLED_Display | OLED_SSD1306:OLED_SSD1306_128x64 | P6 |
| 1 | ZENER | Diodes_SMD:D_MiniMELF_Handsoldering | D3 |
| 1 | arduino_nano | arduino:arduino_mini | U1 |
The 58 most common of 74 parts.
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Questions
How big is the Arduino Spot Welder PCB?
It measures 110 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arduino Spot Welder use?
74 parts, built around the MCP1407-E/P, IRFB7430PBF and 5.0SMDJ13A. 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 Arduino Spot Welder KiCad files?
From the KaeptnBalu/Arduino_Spot_Welder_V3 repository on GitHub, at the commit this page was made from: the board is KiCad_PCB_Files/Kicad Project/Kicad Project V3.1/Arduino_Spot_Welder.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arduino Spot Welder design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).