2 layers90 × 135 mm
2 layers40.1 × 108 mm
Resffb
benregnier/resffb64hp eurorack resonant filterbank based on Serge ResEQ
- Size
- 40.1 × 108 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 111
- Nets
- 85
- Pads
- 313
- Tracks, vias
- 642, 62
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Jun 2025
- Updated
- 19 Jul 2025
Overview
Resffb is an open-source printed circuit board by benregnier, from the benregnier/resffb repository on GitHub. It is a 2-layer board of 40.1 × 108 mm with 111 parts on 85 nets, routed with 642 tracks and 62 vias.
Its parts include 57 resistors, 30 capacitors, 19 connectors and 4 ICs.
README
README.mdresffb
4hp eurorack resonant filter bank based on Serge ResEQ
This is a compact fixed filter bank using the same frequencies as the lower 10 bands of the Serge Resonant EQ. It also features comb outs at the bottom, and a secondary input for feedback.
Schematic and PCBs
The kicad directory contains the schematic and PCB layout as a KiCad 6 project.
Please note this design does not include reverse polarity protection, and keyed headers don't fit within the width - please be careful to make sure that your power cable's polarity is correct!
Panel
Available in the panel directory as a PDF and an SVG vector file.
License
Parts
111| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R17, R24, R25, R28, R32, R33, R44, R45, R46, R47, R50, R54, R55, R56, R57 |
| 11 | 330R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R10, R11, R12, R13, R48, R49, R51, R52, R53 |
| 8 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C30, C31, C32, C33, C34, C35, C36, C37 |
| 4 | 4n7 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8, C9, C10 |
| 4 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U2, U3, U4 |
| 3 | 2n2 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12, C21 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37, R42 |
| 2 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6 |
| 2 | 130k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R39, R40 |
| 2 | 16k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R35, R41 |
| 2 | 1n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14 |
| 2 | 220pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C18 |
| 2 | 22k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R43 |
| 2 | 22n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4 |
| 2 | 22u | Library:CAPAE430X610N | C44, C46 |
| 2 | 36k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R20 |
| 2 | 43k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19, R26 |
| 2 | 4u7 | Capacitor_THT:C_Rect_L7.2mm_W8.5mm_P5.00mm_FKP2_FKP2_MKS2_MKP2 | C19, C20 |
| 2 | 680pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C16 |
| 2 | 82k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R34, R38 |
| 2 | Conn_01x07_Pin | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J16, J17 |
| 2 | Conn_01x07_Socket | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J14, J15 |
| 1 | 1.5k | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J7 |
| 1 | 100K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 100k | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV2 |
| 1 | 115 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J11 |
| 1 | 2.8k | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J6 |
| 1 | 218 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J10 |
| 1 | 24k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27 |
| 1 | 27k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29 |
| 1 | 30k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 33k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36 |
| 1 | 411 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J9 |
| 1 | 47pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 5.2k | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J5 |
| 1 | 510k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23 |
| 1 | 51k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 560k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R30 |
| 1 | 61 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J12 |
| 1 | 620k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | 62k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14 |
| 1 | 680k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 68k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 777 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J8 |
| 1 | 820k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16 |
| 1 | 910k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22 |
| 1 | COMB L | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J4 |
| 1 | COMB R | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J3 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J18 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J19 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J13 |
| 1 | IN 1 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J2 |
| 1 | IN 2 | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical_Alt | J1 |
Questions
How big is the Resffb PCB?
It measures 40.1 × 108 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Resffb use?
111 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 Resffb KiCad files?
From the benregnier/resffb repository on GitHub, at the commit this page was made from: the board is KiCAD/ResFFB.kicad_pcb and its schematic KiCAD/ResFFB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Resffb design in my own project?
Its repository states no licence, so its author keeps all rights: ask benregnier before reusing the design.
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