4 layers86.6 × 80 mm VCF, the printed circuit board in 3D

VCF

Size: 86.6 × 80 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 76
Nets: 59
Pads: 228
Tracks, vias: 293, 7
Pours: 203
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 4 Oct 2023
Updated: 2 May 2026

Overview

VCF is an open-source printed circuit board by gehel, from the gehel/synth repository on GitHub. It is a 4-layer board of 86.6 × 80 mm with 76 parts on 59 nets, routed with 293 tracks and 7 vias.

It is built around the TL072 and LM13700M. Its parts include 43 resistors, 14 capacitors, 6 ICs, 4 transistors and 2 connectors.

Main components

Parts

Qty	Value	Footprint	References
10	100K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R11, R13, R19, R25, R32, R43, R44, R46, R47, R48
8	100nF	Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm	C4, C8, C10, C11, C12, C13, C14, C15
4	150K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R14, R26, R37, R40
4	30K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R49, R50, R52, R53
4	MountingHole_Pad	MountingHole:MountingHole_3.2mm_M3_Pad	H1, H2, H3, H4
3	100R	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R18, R29, R51
3	2K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R17, R28, R39
3	TL072	Package_DIP:DIP-8_W7.62mm_Socket_LongPads	U2, U4, U5
2	10K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R30, R33
2	10uF	Capacitor_THT:CP_Radial_D8.0mm_P2.50mm	C16, C17
2	20K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R15, R24
2	220pF	Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm	C5, C9
2	2N3904	Package_TO_SOT_THT:TO-92_HandSolder	Q3, Q4
2	2N3906	Package_TO_SOT_THT:TO-92_HandSolder	Q1, Q2
2	39K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R27, R36
2	4.7M	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R20, R35
2	49.9K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R12, R38
2	7.5K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R21, R31
2	LM13700	Package_DIP:DIP-16_W7.62mm_Socket_LongPads	U3, U6
1	100R	Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical	V/Oct1
1	120K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R45
1	180K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R22
1	1M	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R34
1	1N914	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1
1	1nF	Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm	C7
1	22pF	Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm	C6
1	2K	Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical	HighFreqComp1
1	300K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R6
1	4.7K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R54
1	43K	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R16
1	475R	Library:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R23
1	Conn_01x10	Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical	J2
1	Conn_02x05_Odd_Even	Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical	J1
1	TL074	Package_DIP:DIP-14_W7.62mm_Socket_LongPads	U1

Questions

How big is the VCF PCB?

It measures 86.6 × 80 mm and has 4 copper layers, 1.6 mm thick.

What parts does the VCF use?

76 parts, built around the TL072 and LM13700M. 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 VCF KiCad files?

From the gehel/synth repository on GitHub, at the commit this page was made from: the board is VCF/VCF/VCF.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the VCF design in my own project?

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

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/gehel-synth-vcf" title="VCF in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/gehel-synth-vcf.jpg" alt="VCF" width="1200" height="900">

A picture that opens the board, for a README

[![VCF](https://pcbkit.io/embed/boards/gehel-synth-vcf.jpg?size=s)](https://pcbkit.io/boards/gehel-synth-vcf)

Source

Repository: gehel/synth
Board file: VCF/VCF/VCF.kicad_pcb
Commit: 7ca456f
Licence: Not stated

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