2 layers99.9 × 99.9 mm GR Low Side Switch, the printed circuit board in 3D

GR Low Side Switch

16 channel low-side switch for driving resistive/inductive loads

Size: 99.9 × 99.9 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 202
Nets: 169
Pads: 562
Tracks, vias: 1,483, 323
Pours: 40
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 27 Aug 2022
Updated: 5 Oct 2022

Overview

GR Low Side Switch is an open-source printed circuit board by GadgetReboot, from the GadgetReboot/Low_Side_Switch repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 99.9 × 99.9 mm with 202 parts on 169 nets, routed with 1,483 tracks and 323 vias.

It is built around the MAX485ED, BUK98150-55A-VB and MMBT3904, with the SS26SHE3_B/H among its other parts. Its parts include 94 resistors, 32 transistors, 24 capacitors, 21 connectors and 19 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

KiCad/readme.md

Design files

Parts

202

Qty	Value	Footprint	References
49	1K5	Resistor_SMD:R_0805_2012Metric	R1, R2, R3, R10, R11, R12, R13, R14, R15, R16, R19, R20, R21, R22, R27, R29 +33
26	10K	Resistor_SMD:R_0805_2012Metric	R23, R24, R25, R26, R39, R40, R41, R42, R55, R56, R57, R58, R71, R72, R73, R74 +10
22	100nF	Capacitor_SMD:C_0805_2012Metric	C3, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24 +6
16	15K	Resistor_SMD:R_0805_2012Metric	R28, R30, R32, R34, R44, R46, R48, R50, R60, R62, R64, R66, R76, R78, R80, R82
16	BUK98150-55A	Package_TO_SOT_SMD:SOT-223-3_TabPin2	Q1, Q3, Q5, Q7, Q9, Q11, Q13, Q15, Q17, Q19, Q21, Q23, Q25, Q27, Q29, Q31
16	LED	LED_SMD:LED_0805_2012Metric	D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18
16	MMBT3904	Package_TO_SOT_SMD:SOT-23	Q2, Q4, Q6, Q8, Q10, Q12, Q14, Q16, Q18, Q20, Q22, Q24, Q26, Q28, Q30, Q32
12	Conn_01x02	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J10, JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP11
4	MountingHole	MountingHole:MountingHole_3.2mm_M3	MH1, MH2, MH3, MH4
4	Screw_Terminal_01x08	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-8-2.54_1x08_P2.54mm_Horizontal	J4, J5, J8, J9
2	10uF	Capacitor_SMD:C_0805_2012Metric	C1, C2
2	4K7	Resistor_SMD:R_0805_2012Metric	R17, R94
2	MCP23017_SS	footprints:SSOP-28_5.3x10.2mm_P0.65mm_modified	U2, U3
2	TestPoint_Alt	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP1, TP2
1	120r	Resistor_SMD:R_0805_2012Metric	R18
1	ATtiny x04/x14	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U5
1	MAX485	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U4
1	NCP1117-5.0	Package_TO_SOT_SMD:TO-252-2	U1
1	Power	LED_SMD:LED_0805_2012Metric	D2
1	SS26SHE3_B/H	Diode_SMD:D_SMA	D1
1	Screw_Terminal_01x01	footprints:7691-SEMS	J3
1	Screw_Terminal_01x02	TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type101_RT01602HBWC_1x02_P5.08mm_Horizontal	J2
1	Screw_Terminal_01x03	TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-3_1x03_P2.54mm_Horizontal	J1
1	Screw_Terminal_01x04	TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-4_1x04_P2.54mm_Horizontal	J6
1	Screw_Terminal_01x16	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-16-5.08_1x16_P5.08mm_Horizontal	J7
1	Status	LED_SMD:LED_0805_2012Metric	D20

The 201 most common of 202 parts.

Questions

How big is the GR Low Side Switch PCB?

It measures 99.9 × 99.9 mm and has 2 copper layers, 1.6 mm thick.

What parts does the GR Low Side Switch use?

202 parts, built around the MAX485ED, BUK98150-55A-VB, MMBT3904 and SS26SHE3_B/H. 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 GR Low Side Switch KiCad files?

From the GadgetReboot/Low_Side_Switch repository on GitHub, at the commit this page was made from: the board is KiCad/GR_Low_Side_Switch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the GR Low Side Switch design in my own project?

Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/gadgetreboot-low-side-switch" title="GR Low Side Switch 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/gadgetreboot-low-side-switch.jpg" alt="GR Low Side Switch" width="1200" height="900">

A picture that opens the board, for a README

[![GR Low Side Switch](https://pcbkit.io/embed/boards/gadgetreboot-low-side-switch.jpg?size=s)](https://pcbkit.io/boards/gadgetreboot-low-side-switch)

Source

Repository: GadgetReboot/Low_Side_Switch
Board file: KiCad/GR_Low_Side_Switch.kicad_pcb
Commit: 4bae7ab
Licence: CC-BY-SA-4.0

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