2 layers75 × 25 mm Kicad mic amp, the printed circuit board in 3D

Kicad mic amp

KiCad project of a microphone amplifier with Codec and USB support.

Size: 75 × 25 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 35
Nets: 40
Pads: 126
Tracks, vias: 227, 17
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 29 May 2025
Updated: 5 Jun 2025

Overview

Kicad mic amp is an open-source printed circuit board by Despairon, from the Despairon/kicad_mic_amp repository on GitHub, published under the MIT licence. It is a 2-layer board of 75 × 25 mm with 35 parts on 40 nets, routed with 227 tracks and 17 vias.

It is built around the MIC5365-3.0YD5-TR. Its parts include 17 capacitors, 8 resistors, 4 ICs, 3 connectors and 1 crystal. It belongs with the audio and music boards of this library.

Main components

MIC5365-3.0YD5-TR
TSOT-23-5-40℃~+125℃@(Tj) 1 150mA 200uVrms 310mV@(150mA) 39uA 3V 5.5V 65dB@(1kHz) Fixed Over Current Protection、Thermal shutdown、Enable control Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators

Category and platform

Audio and music

Project files

Show this board on your page

https://pcbkit.io/boards/Despairon/kicad_mic_amp

The board's own page, for a message or a post.

Source

Repository: Despairon/kicad_mic_amp
Board file: kicad_mic_amp.kicad_pcb
Commit: afa3850
Licence: MIT

Parts

Qty	Value	Footprint	References
8	1uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C5, C6, C7, C8, C12, C13, C14, C15
3	0.1uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1, C3, C10
2	10uF	Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I_HandSolder	C9, C11
2	2.2k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1, R4
2	22k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R5, R6
2	30pF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C16, C17
2	~	Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical	JP1, JP2
1	0.47uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C2
1	1.5k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R7
1	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R2
1	12MHz	Crystal:Crystal_HC49-4H_Vertical	Y1
1	150k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R3
1	1M	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R8
1	2.2uF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4
1	IN_R	Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical	J2
1	MAX9814	Package_DFN_QFN:DFN-14-1EP_3x3mm_P0.4mm_EP1.78x2.35mm	U1
1	MIC	Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical	J3
1	MIC5365-3.0YD5-TR	Package_TO_SOT_SMD:SOT-353_SC-70-5	U3
1	PCM2906CDBR	PCM2906CDBR:DB28_TEX	U4
1	TCR2EF36	Package_TO_SOT_SMD:SOT-553	U2
1	USB_A	Connector_USB:USB_A_CNCTech_1001-011-01101_Horizontal	J1

Similar boards

2 layers42.6 × 14.1 mm
UsbAudio
ccostes/usbMic
USB Audio Interface
39 parts16
4 layers102.7 × 100 mm
Pipad
kitspace-test-repos/kicad6-file-collection

116 partsMIT
2 layers97.2 × 59.1 mm
ArmLEDsPrototype
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
35 parts915
2 layers62 × 42 mm
Mod cell 0 02
Green-bms/SmartBMS
Open source Smart Battery Management System
35 parts756
2 layers75 × 26 mm
DIY detector electron variant
ozel/DIY_particle_detector
A mobile low-cost spectrometer for measuring radioactivity and the energy of ionising radiation like alpha particles and electrons
35 parts558BSD-2-Clause
2 layers45 × 25 mm
ReCamera Basically Board
Seeed-Studio/OSHW-reCamera-Series
reCamera is a series of open-source AI cameras.
35 parts495Apache-2.0
2 layers160.8 × 24.4 mm
HUD VID RCD PANEL
jrsteensen/OpenHornet
OpenHornet 1:1 F/A-18C Simulator Repository
35 parts431
2 layers75 × 50 mm
Backplane tester
dennisss/dacha
Monorepo for awesome tools/projects/libraries
35 parts397Apache-2.0

Questions

How big is the Kicad mic amp PCB?

It measures 75 × 25 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Kicad mic amp use?

35 parts, built around the MIC5365-3.0YD5-TR. 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 Kicad mic amp KiCad files?

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

Can I use the Kicad mic amp design in my own project?

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