2 layers111.8 × 35.6 mm BigPulse, the printed circuit board in 3D

BigPulse

A high power avalanche mode laser driver

Size: 111.8 × 35.6 mm
Copper layers: 2
Thickness: 1.63 mm
Parts: 81
Nets: 38
Pads: 229
Tracks, vias: 158, 124
Pours: 32
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 18 Sep 2025
Updated: 21 Sep 2025

Overview

BigPulse is an open-source printed circuit board by MazinLab, from the MazinLab/BigPulse repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 111.8 × 35.6 mm with 81 parts on 38 nets, routed with 158 tracks and 124 vias.

It is built around the ADP7142ARDZ-5.0, ISO6740DW and LR8K4-G, with the DFLS1150, FMMT415TD and SPL PL90 among its other parts. Its parts include 26 resistors, 24 capacitors, 6 diodes, 4 ICs and 4 connectors.

Main components

README

README.md

BigPulse

A high power avalanche mode laser driver

For fully isolated use, cut the jumper on the bottom, do not populate the boost converter and supply 200V and 12V to each side seperately

For use without ground isolation do not populate anything on the bottom other than the sense resistors and supply 12V through the barrel jack

Parts

Qty	Value	Footprint	References
6	0	Resistor_SMD:R_1210_3225Metric	R2, R3, R4, R5, R6, R7
6	0.5	Resistor_SMD:R_1210_3225Metric	R8, R9, R10, R11, R12, R13
6	47p	Capacitor_SMD:C_1210_3225Metric	C2, C3, C4, C5, C6, C7
5	DFLS1150	Diode_SMD:D_PowerDI-123	D2, D3, D4, D5, D6
4	1/4 20	holes:quarter-twenty	H, H, H, H
3	100n	Capacitor_SMD:C_1210_3225Metric	C8, C12, C19
3	50	Resistor_SMD:R_0603_1608Metric	R14, R15, R19
2	10k	Resistor_SMD:R_0603_1608Metric	R18, R20
2	1n	Capacitor_SMD:C_0603_1608Metric	C15, C24
2	1u	Capacitor_SMD:C_2220_5750Metric	C10, C18
2	1u	Capacitor_SMD:C_0603_1608Metric	C11, C16
2	2.2u	Capacitor_SMD:C_0603_1608Metric	C22, C23
2	220n	Capacitor_SMD:C_2220_5750Metric	C20, C21
2	4-40a	MountingHole:MountingHole_3mm	MH1, MH4
1	1.2k	Resistor_SMD:R_1210_3225Metric	R1
1	107k	Resistor_SMD:R_0603_1608Metric	R23
1	10k	Potentiometer_SMD:Potentiometer_Bourns_3314S_Horizontal	RV2
1	10n	Capacitor_SMD:C_1210_3225Metric	C1
1	10u	Capacitor_SMD:C_2220_5750Metric	C17
1	10u	Inductor_SMD_Wurth:L_Wurth_WE-LQSH-4020	L1
1	12VIN	Connector_BarrelJack:BarrelJack_Wuerth_694106106102_2.0x5.5mm	J2
1	18.2k	Resistor_SMD:R_0603_1608Metric	R21
1	1M	Resistor_SMD:R_0603_1608Metric	R25
1	20	Resistor_SMD:R_0805_2012Metric	R26
1	220n	Capacitor_SMD:C_0603_1608Metric	C14
1	4.7k	Resistor_SMD:R_0603_1608Metric	R16
1	50k	Potentiometer_SMD:Potentiometer_Bourns_3314S_Horizontal	RV1
1	6.04k	Resistor_SMD:R_0603_1608Metric	R22
1	84.5k	Resistor_SMD:R_0603_1608Metric	R24
1	ADP7142ARDZ-5.0	Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm	U3
1	AOUT	Connector_Coaxial:SMA_Amphenol_132134-10_Vertical	TP1
1	BANANA_V+	MountingHole:MountingHole_3.7mm_Pad_Via	J3
1	BANANA_V-	MountingHole:MountingHole_3.7mm_Pad_Via	J4
1	DNP	Capacitor_SMD:C_1210_3225Metric	C13
1	DNP	Capacitor_SMD:C_0603_1608Metric	C9
1	DNP	Resistor_SMD:R_0603_1608Metric	R17
1	FMMT415TD	Package_TO_SOT_SMD:SOT-23-3	Q1
1	G***	holes:milo	svg2mod
1	GNDCON	Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm	JP2
1	ISO6740	Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm	U2
1	LR8K4-G	Package_TO_SOT_SMD:TO-252-2	U4
1	LT8365	Package_SO:Analog_MSOP-12-16-1EP_3x4.039mm_P0.5mm_EP1.651x2.845mm_ThermalVias	U1
1	S3MB-13-F	Diode_SMD:D_SMB	D1
1	SPL_PL90	LED_THT:LED_D5.0mm	LD1
1	TRIG	Connector_Coaxial:SMA_Amphenol_132134-10_Vertical	J1
1	TRIG_DIRECT	Connector_Coaxial:SMA_Amphenol_132134-10_Vertical	TP2
1	VRANGE	Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm	JP1

The 80 most common of 81 parts.

Questions

How big is the BigPulse PCB?

It measures 111.8 × 35.6 mm and has 2 copper layers, 1.63 mm thick.

What parts does the BigPulse use?

81 parts, built around the ADP7142ARDZ-5.0, ISO6740DW, LR8K4-G and DFLS1150. 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 BigPulse KiCad files?

From the MazinLab/BigPulse repository on GitHub, at the commit this page was made from: the board is bigpulse/bigpulse.kicad_pcb and its schematic bigpulse/bigpulse.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the BigPulse design in my own project?

Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/mazinlab-bigpulse" title="BigPulse in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/mazinlab-bigpulse.jpg" alt="BigPulse" width="1200" height="900">

A picture that opens the board, for a README

[![BigPulse](https://pcbkit.io/embed/boards/mazinlab-bigpulse.jpg?size=s)](https://pcbkit.io/boards/mazinlab-bigpulse)

Source

Repository: MazinLab/BigPulse
Board file: bigpulse/bigpulse.kicad_pcb
Commit: 568fbc9
Licence: GPL-2.0

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