Anti-Spark Switch
msglazer·Anti-Spark_Switch
About the Anti-Spark Switch PCB
Anti-Spark Switch is an open source PCB design by msglazer, published on GitHub. It is a 2-layer board measuring 63.3 × 42 mm, with 17 components from 9 distinct parts.
By type, the board carries 7 connectors, 5 resistors, 3 transistors, 1 diode and 1 capacitor.
From the project
personal improvements/changes to the vedder antispark switch
Design allows for a battery to be connected to a source without the usual spark in the connector, also provides a convenient on off ability. Improvements to the design include an upgraded, more robust fuse and fuse holder, an additional MOSFET for higher current handling as well as better distribution of power through the MOSFETs. There is also the option of adding an LED powered through the PCB, the LED is powered after the MOSFET switch

Anti-Spark Switch bill of materials (BOM)
17 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 942-IRFS7530TRL7PP IRFS7530 Infineon Technologies | D2PAK-7-GDS | Q1, Q2, Q3 |
| 4 | Pad_Conn | 1PAD_8x7mm | P1, P2, P5, P6 |
| 2 | 710-7460408 Screw_Terminal Wurth Electronics | M5_Screw_Terminal_12_pin | P3, P4 |
| 1 | CONN_01X04 | JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | P7 |
| 1 | 821-BZT52B12 ZENER Taiwan Semiconductor | D_SOD-123F | D1 |
| 1 | 581-06033C105KAT2A 1uF AVX | C_0603 | C1 |
| 2 | 667-ERJ-3EKF1004V 1M Panasonic | R_0603 | R1, R2 |
| 1 | 667-ERJ-3EKF1001V 1K Panasonic | R_0603 | R3 |
| 2 | 16.5K | R_1206 | R4, R5 |
Anti-Spark Switch design files
The KiCad project lives in the msglazer/Anti-Spark_Switch repository on GitHub; these links point at the commit this page was built from.
Anti-Spark Switch: common questions
How big is the Anti-Spark Switch PCB?
The Anti-Spark Switch measures 63.3 × 42 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Anti-Spark Switch?
17 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Anti-Spark Switch design files?
From the msglazer/Anti-Spark_Switch repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Anti-Spark Switch design in my own project?
The repository has no license, so all rights stay with msglazer. Use it as a reference, and ask the author before reusing the design.