2 layers130 × 121 mm
4 layers40.9 × 15.5 mm
- Size
- 40.9 × 15.5 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 87
- Nets
- 35
- Pads
- 236
- Tracks, vias
- 199, 33
- Pours
- 29
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 21 Apr 2021
- Updated
- 1 Dec 2022
Overview
Buffer is an open-source printed circuit board by kefernandez, from the kefernandez/SSB_ChargeInjection repository on GitHub. It is a 4-layer board of 40.9 × 15.5 mm with 87 parts on 35 nets, routed with 199 tracks and 33 vias.
It is built around the 2EDF7275K. Its parts include 14 resistors, 13 capacitors, 6 diodes and 4 transistors.
Main components
1Parts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | TestPoint | user_dc:Via_24milC | TP1, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP10, TP11, TP15, TP16, TP17 +28 |
| 4 | 100pF | calisco-general:C_0402 | C2, C3, C10, C11 |
| 4 | 150 | calisco-general:R_0402 | R2, R3, R12, R13 |
| 4 | 1uF | calisco-general:C_0402 | C1, C4, C8, C12 |
| 4 | 20uF | calisco-general:C_0603 | C5, C6, C7, C9 |
| 4 | 22 | calisco-general:R_0402 | R6, R7, R8, R9 |
| 4 | D_Schottky | calisco-general:D_0402 | D2, D3, D4, D5 |
| 4 | NFET_EPC2 | user_dc:EPC_EPC203x_BGA-24 | Q1, Q2, Q3, Q4 |
| 4 | TestPoint | user_dc:Pad_Power | TP7, TP8, TP12, TP13 |
| 2 | 10 | calisco-general:R_0402 | R4, R11 |
| 2 | 2EDF7275K | user_dc:2EDF7275K | Inf1, Inf2 |
| 2 | 50m | calisco-general:R_0402 | R5, R10 |
| 2 | 732k | calisco-general:R_0402 | R1, R14 |
| 2 | D | user_mb:DO-219AB | D1, D6 |
| 1 | C | calisco-general:C_0805 | C13 |
Questions
How big is the Buffer PCB?
It measures 40.9 × 15.5 mm and has 4 copper layers, 0.8 mm thick.
What parts does the Buffer use?
87 parts, built around the 2EDF7275K. 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 Buffer KiCad files?
From the kefernandez/SSB_ChargeInjection repository on GitHub, at the commit this page was made from: the board is Buffer/Archive/Buffer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Buffer design in my own project?
Its repository states no licence, so its author keeps all rights: ask kefernandez before reusing the design.
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