

Hydrophone
- Size
- 26 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 115
- Nets
- 96
- Pads
- 349
- Tracks, vias
- 455, 124
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Feb 2025
- Updated
- 7 Mar 2025
Overview
Hydrophone is an open-source printed circuit board by Remus287, from the Remus287/Hydrophone repository on GitHub. It is a 2-layer board of 26 × 75 mm with 115 parts on 96 nets, routed with 455 tracks and 124 vias.
It is built around the PCM2912APJTR and MMBFJ201. Its parts include 35 resistors, 31 capacitors, 8 diodes, 4 ICs and 4 connectors.
Main components
2Parts
115| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1u | Capacitor_SMD:C_0402_1005Metric | C105, C106, C107, C112, C402, C405, C406, C407, C412 |
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C103, C111, C203, C403, C404, C411 |
| 6 | 47k | Resistor_SMD:R_0402_1005Metric | R114, R115, R206, R207, R404, R406 |
| 6 | 6.8v Zener | Diode_SMD:D_SOD-123 | D101, D102, D301, D302, D401, D402 |
| 6 | PEIZO+ | TestPoint:TestPoint_Pad_D1.0mm | TP101, TP201, TP203, TP205, TP301, TP401 |
| 6 | PEIZO- | TestPoint:TestPoint_Pad_D1.0mm | TP102, TP202, TP204, TP206, TP302, TP402 |
| 5 | 22u | Capacitor_SMD:C_0805_2012Metric | C101, C104, C201, C204, C415 |
| 4 | 0 | Resistor_SMD:R_0603_1608Metric | R101, R103, R403, R405 |
| 4 | 100p | Capacitor_SMD:C_0402_1005Metric | C109, C110, C409, C410 |
| 4 | 10M | Resistor_SMD:R_0402_1005Metric | R106, R204, R301, R402 |
| 4 | 1k | Capacitor_SMD:C_0402_1005Metric | R104, R107, R202, R205 |
| 4 | 30p | Capacitor_SMD:C_0402_1005Metric | C113, C114, C413, C414 |
| 4 | 33 | Resistor_SMD:R_0402_1005Metric | R108, R109, R407, R408 |
| 4 | 5k1 | Resistor_SMD:R_0402_1005Metric | R112, R113, R411, R412 |
| 3 | 1k5 | Resistor_SMD:R_0402_1005Metric | R110, R401, R409 |
| 3 | 3.3u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C108, C401, C408 |
| 2 | 10k | Resistor_SMD:R_1206_3216Metric | R105, R203 |
| 2 | 12v Zener | Diode_SMD:D_SOD-123 | D201, D202 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R111, R410 |
| 2 | 1uH | Inductor_SMD:L_1210_3225Metric | L101, L401 |
| 2 | 47 | Resistor_SMD:R_0805_2012Metric | R102, R201 |
| 2 | 6MHz | Crystal:Crystal_SMD_HC49-SD | X101, X401 |
| 2 | AudioJack4 | Connector_Audio:Jack_3.5mm_PJ320D_Horizontal | J201, J301 |
| 2 | MMBFJ201 | Package_TO_SOT_SMD:SOT-23 | Q301, Q401 |
| 2 | OPA1642AIDR | OPA1642AIDR:D8 | U101, U201 |
| 2 | PCM2912APJTR | PCM2912A:PJT32 | U102, U401 |
| 2 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7025 | J101, J401 |
The 100 most common of 115 parts.
Questions
How big is the Hydrophone PCB?
It measures 26 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hydrophone use?
115 parts, built around the PCM2912APJTR and MMBFJ201. 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 Hydrophone KiCad files?
From the Remus287/Hydrophone repository on GitHub, at the commit this page was made from: the board is Hydrophone.kicad_pcb and its schematic 9V_To_3.5mm_Jack.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hydrophone design in my own project?
Its repository states no licence, so its author keeps all rights: ask Remus287 before reusing the design.
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