2 layers68.7 × 61.7 mm
2 layers98 × 70 mm
16 transistor amp ver3
Meron3/Building_an_Op-Amp_Using_Transistors1ICを使わずに、トランジスタで構成されたスピーカーアンプです
- Size
- 98 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 32
- Pads
- 116
- Tracks, vias
- 194, 7
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Apr 2026
- Updated
- 1 Apr 2026
Overview
16 transistor amp ver3 is an open-source printed circuit board by Meron3, from the Meron3/Building_an_Op-Amp_Using_Transistors repository on GitHub, published under the MIT licence. It is a 2-layer board of 98 × 70 mm with 50 parts on 32 nets, routed with 194 tracks and 7 vias.
It is built around the 2SC1815 and 2SA1015. Its parts include 16 resistors, 16 transistors, 8 capacitors, 2 connectors and 1 diode. It belongs with the audio and music boards of this library.
Main components
2README
README.mdトランジスタで作るスピーカーアンプ
トランジスタ16石で作るスピーカーアンプのkicadプロジェクトです。
kicad9.0以降で開くことができます。
トグルスイッチのフットプリントは、nosuz様のkicad-libをインポートして使用しています。 https://github.com/nosuz/kicad-lib
回路図
Overview
Building an Op-Amp Using Transistors
This is a KiCad project for a speaker amplifier using 16 transistors.
It can be opened with KiCad 9.0 or later.
The toggle switch footprint uses KiCad-lib imported by nosuz. https://github.com/nosuz/kicad-lib
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 2SC1815 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 7 | 2SA1015 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q10, Q11, Q12, Q13, Q14, Q15, Q16 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 2 | 0.1u | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C7, C8 |
| 2 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R16 |
| 2 | 220u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C5, C6 |
| 2 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6 |
| 2 | 33k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R12 |
| 2 | 360 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R15 |
| 2 | 3V | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1, BT2 |
| 2 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1, J2 |
| 1 | 0.047u | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C3 |
| 1 | 1.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R14 |
| 1 | 10u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C4 |
| 1 | 180 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11 |
| 1 | 2200p | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C2 |
| 1 | 220p | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1 |
| 1 | 33 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13 |
| 1 | 6.8k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 7.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | LED | LED_THT:LED_D3.0mm | D1 |
| 1 | SW_DPDT_x2 | 0my_project:2MD1-T2-B4-M2-Q-N | SW1 |
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Questions
How big is the 16 transistor amp ver3 PCB?
It measures 98 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 16 transistor amp ver3 use?
50 parts, built around the 2SC1815 and 2SA1015. 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 16 transistor amp ver3 KiCad files?
From the Meron3/Building_an_Op-Amp_Using_Transistors repository on GitHub, at the commit this page was made from: the board is 16_transistor_amp_ver3.kicad_pcb and its schematic 16_transistor_amp_ver3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 16 transistor amp ver3 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).