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2 layers40.6 × 50.2 mmRp buffer, the printed circuit board in 3D

Rp buffer

restelli/RP-buffer

Buffer for Red Pitaya's designs.

Open in PCBKitView on GitHub.kicad_pcb
Size
40.6 × 50.2 mm
Copper layers
2
Thickness
1.6 mm
Parts
33
Nets
21
Pads
95
Tracks, vias
186, 0
Pours
2
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
5 Oct 2026
Updated
6 Oct 2026

Overview

Rp buffer is an open-source printed circuit board by restelli, from the restelli/RP-buffer repository on GitHub. It is a 2-layer board of 40.6 × 50.2 mm with 33 parts on 21 nets, routed with 186 tracks and 0 vias.

It is built around the MMBF170. Its parts include 12 resistors, 8 capacitors, 5 connectors, 4 ICs and 2 transistors.

Main components

1

README

README.md

Multiplying Buffer for Red Pitaya designs

See the design with kicanvas by following this link

Parts

33
QtyValueFootprintReferences
8R_USResistor_SMD:R_0603_1608MetricR1, R2, R5, R6, R7, R8, R10, R11
42.2uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C2, C6, C7
450Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderR3, R4, R9, R12
20.1uFCapacitor_SMD:C_0805_2012MetricC3, C5
2Conn_CoaxialConnector_Coaxial:SMA_Amphenol_132291-12_VerticalJ1, J3
2Conn_CoaxialConnector_Coaxial:SMA_Amphenol_132134-16_VerticalJ2, J4
2DNPCapacitor_SMD:C_0603_1608MetricC4, C8
2Jumper_2_OpenTerminalBlock:TerminalBlock_Xinya_XY308-2.54-2P_1x02_P2.54mm_HorizontalJP1, JP2
2LM7171xIMPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU2, U4
2MMBF170Package_TO_SOT_SMD:SOT-23Q1, Q2
2TL432DBZPackage_TO_SOT_SMD:SOT-23U1, U3
1Screw_Terminal_01x03TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x03_P3.50mm_VerticalJ5

Questions

How big is the Rp buffer PCB?

It measures 40.6 × 50.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Rp buffer use?

33 parts, built around the MMBF170. 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 Rp buffer KiCad files?

From the restelli/RP-buffer repository on GitHub, at the commit this page was made from: the board is kicad/rp_buffer.kicad_pcb and its schematic kicad/libraries/opamp_blocks.kicad_blocks/LM7171_with_offset_control.kicad_block/LM7171_with_offset_control.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Rp buffer design in my own project?

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

More from restelli/RP-buffer

1

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