2 layers139.7 × 73.7 mm
2 layers79.5 × 58.6 mm
Class d amplifier
pdvr99/class_d_amplifierPCB with TPA3251
- Size
- 79.5 × 58.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 42
- Pads
- 124
- Tracks, vias
- 272, 14
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Mar 2026
- Updated
- 22 Mar 2026
Overview
Class d amplifier is an open-source printed circuit board by pdvr99, from the pdvr99/class_d_amplifier repository on GitHub. It is a 2-layer board of 79.5 × 58.6 mm with 40 parts on 42 nets, routed with 272 tracks and 14 vias.
Its parts include 23 capacitors, 9 resistors, 2 connectors, 2 inductors and 1 IC. It belongs with the audio and music boards of this library.
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 1u | Capacitor_SMD:C_0603_1608Metric | C4, C5, C8, C9, C14, C15, C22 |
| 3 | 3.3 | Resistor_SMD:R_0402_1005Metric | R1, R6, R7 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 100 | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric | C11, C23 |
| 2 | 100p | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R5, R9 |
| 2 | 10n | Capacitor_SMD:C_0402_1005Metric | C18, C19 |
| 2 | 15u | Inductor_SMD:L_0603_1608Metric | L1, L2 |
| 2 | 1n | Capacitor_SMD:C_0402_1005Metric | C16, C17 |
| 2 | 33n | Capacitor_SMD:C_0402_1005Metric | C12, C13 |
| 2 | 470u | Capacitor_SMD:C_0603_1608Metric | C20, C21 |
| 2 | Conn_01x02_Socket | Connector_Hirose:Hirose_DF63M-2P-3.96DSA_1x02_P3.96mm_Vertical | J1, J2 |
| 1 | 2200u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 22k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 290 | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 470n | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | LED | LED_SMD:LED_1812_4532Metric | D1 |
| 1 | Speaker | Battery:BatteryHolder_Keystone_107_1x23mm | LS1 |
| 1 | Speaker | Battery:BatteryHolder_Keystone_104_1x23mm | LS2 |
| 1 | TPA3251 | Package_SO:HTSSOP-44_6.1x14mm_P0.635mm_TopEP4.14x7.01mm | U1 |
Questions
How big is the Class d amplifier PCB?
It measures 79.5 × 58.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Class d amplifier use?
40 parts. 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 Class d amplifier KiCad files?
From the pdvr99/class_d_amplifier repository on GitHub, at the commit this page was made from: the board is class_d_amplifier.kicad_pcb and its schematic class_d_amplifier.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Class d amplifier design in my own project?
Its repository states no licence, so its author keeps all rights: ask pdvr99 before reusing the design.
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