2 layers80 × 50 mm EE101 Board, the printed circuit board in 3D

EE101 Board

This is a complete audio amplification system, integrating an AC–DC power supply with a class D audio amplifier that drives a passive speaker.

Open in PCBKit

Size: 80 × 50 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 33
Nets: 26
Pads: 105
Tracks, vias: 253, 28
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 18 Jul 2025
Updated: 6 Jan 2026

Overview

EE101 Board is an open-source printed circuit board by atsulliv, from the atsulliv/PCB-AudioAmplifier repository on GitHub. It is a 2-layer board of 80 × 50 mm with 33 parts on 26 nets, routed with 253 tracks and 28 vias.

It is built around the IRF540N. Its parts include 17 capacitors, 5 diodes, 4 connectors, 2 resistors and 2 inductors. It belongs with the audio and music boards of this library.

Main components

IRF540N
TO-2201 N-channel 1.35nF 100V 130W 280pF 33A 35mΩ@10V 4V 52nC@10V 85pF N-Channel TO-220 MOSFETs ROHSOSENMOSFETs

README

README.md

Audio Amplifier (AC-DC Converter + Boombox)

This is a complete audio amplification system, integrating an AC–DC power supply with a class D audio amplifier that drives a passive speaker. Implemented rectification, filtering, and voltage regulation (shunting, transistor stage) to convert wall AC into a stable, adjustable DC rail. Designed the amplifier stage to achieve sufficient gain and output power while maintaining signal fidelity and minimizing harmonic distortion. Extended this project by integrates both the converter and amplifier into a single, two-sided PCB.

Parts

Qty	Value	Footprint	References
6	1u	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C3, C4, C6, C7, C8, C9
4	1N4002	Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal	D1, D2, D3, D4
4	470u	Audio_Amplifier:Panasonic 25SVPG470M	C5, C15, C16, C17
2	0.22u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C11, C12
2	0.68u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C13, C14
2	22u	Audio_Amplifier:SRP1038WA220M	L1, L2
2	AudioJack3	Audio_Amplifier:CUI_SJ-3523-SMT-TR	J1, J2
2	Conn_01x02	Audio_Amplifier:2249290002	J3, J4
1	10-5M	Audio_Amplifier:TRIM_3362P-1-205LF	RV1
1	1000u	Audio_Amplifier:CAPAE1600X1700N	C1
1	10k	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R2
1	10u	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C10
1	1N47xxA	Audio_Amplifier:DIOM5226X240N	D5
1	1k	Audio_Amplifier:RESC5025X70N	R1
1	470u	Audio_Amplifier:C-MAL216099003E3	C2
1	IRF540N	Audio_Amplifier:D2PAK-IRF940N	Q1
1	~	Audio_Amplifier:TPA-3123D2-TSSOP - 1.2 mm max height	U1

Questions

How big is the EE101 Board PCB?

It measures 80 × 50 mm and has 2 copper layers, 1.6 mm thick.

What parts does the EE101 Board use?

33 parts, built around the IRF540N. 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 EE101 Board KiCad files?

From the atsulliv/PCB-AudioAmplifier repository on GitHub, at the commit this page was made from: the board is kicad/EE101_Board/EE101_Board.kicad_pcb and its schematic kicad/EE101_Board/EE101_Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the EE101 Board design in my own project?

Its repository states no licence, so its author keeps all rights: ask atsulliv before reusing the design.

Category and platform

Audio and music

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/atsulliv-pcb-audioamplifier" title="EE101 Board 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/atsulliv-pcb-audioamplifier.jpg" alt="EE101 Board" width="1200" height="900">

A picture that opens the board, for a README

[![EE101 Board](https://pcbkit.io/embed/boards/atsulliv-pcb-audioamplifier.jpg?size=s)](https://pcbkit.io/boards/atsulliv-pcb-audioamplifier)

Source

Repository: atsulliv/PCB-AudioAmplifier
Board file: kicad/EE101_Board/EE101_Board.kicad_pcb
Commit: 6338590
Licence: Not stated

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