4 layers115 × 85 mm VLF PCB, the printed circuit board in 3D

VLF PCB

VLF PCB designed be USIP

Size: 115 × 85 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 71
Nets: 36
Pads: 184
Tracks, vias: 255, 7
Pours: 8
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 25 Jul 2026
Updated: 25 Jul 2026

Overview

VLF PCB is an open-source printed circuit board by Able-Digital-Logic, from the Able-Digital-Logic/VLF-PCB repository on GitHub. It is a 4-layer board of 115 × 85 mm with 71 parts on 36 nets, routed with 255 tracks and 7 vias.

It is built around the AD797ANZ and TL084CN. Its parts include 31 capacitors, 20 resistors, 7 connectors, 2 ICs and 2 inductors.

Main components

Parts

Qty	Value	Footprint	References
6	50nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C24, C25, C26, C27, C28, C29
4	10uF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C5, C6, C7, C8
4	1M	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R3, R4, R9, R10
4	1nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C1, C2, C3, C4
4	68nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C16, C17, C21, C22
3	1uF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C11, C13, C15
2	100k	Potentiometer_THT:Potentiometer_Vishay_43_Horizontal	RV1, RV2
2	100nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C10, C14
2	100uF	Capacitor_THT:CP_Radial_D8.0mm_P3.50mm	C30, C31
2	10k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R11, R15
2	140nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C20, C23
2	20nF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C18, C19
2	220k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R7, R8
2	2pF	Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm	C9, C12
2	4.7uH	Inductor_THT:L_Axial_L5.3mm_D2.2mm_P7.62mm_Horizontal_Vishay_IM-1	L1, L2
2	750	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R1, R2
2	AudioJack2	USIP:AuxWirePads	J7, J7
1
1	1.3k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R17
1	1.6k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R13
1	100k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R19
1	11k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R20
1	2.2M	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R6
1	300	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R12
1	4k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R5
1	7.3k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R14
1	90k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R16
1	9k	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R18
1	AD797ANZ	1_MYCUSTOMLIBRARY:AD797	IC1
1	BNC_TEConnectivity_1478035_Horizontal	Connector_Coaxial:BNC_TEConnectivity_1478035_Horizontal	J6
1	Conn_01x05_Socket	Connector_JST:JST_EH_S5B-EH_1x05_P2.50mm_Horizontal	J3
1	Conn_01x05_Socket	Connector_PinHeader_1.00mm:PinHeader_1x05_P1.00mm_Vertical	J4
1	Conn_01x05_Socket	Connector_JST:JST_EH_B5B-EH-A_1x05_P2.50mm_Vertical	J2
1	Conn_Coaxial	Connector_Coaxial:BNC_TEConnectivity_1478204_Vertical	J6
1	LOGO	USIP:back silkscreenfile	G***
1	LOGO	USIP:BongoCat Silkscreen	G***
1	MMCX_Molex_73415-1471	Connector_Coaxial:MMCX_Molex_73415-1471_Vertical	MMCX_Molex_73415-1471
1	SMA_Amphenol_901-143	Connector_Coaxial:SMA_Amphenol_901-143_Horizontal	SMA_Amphenol_901-143
1	TL084CN	1_MYCUSTOMLIBRARY:TL084CN	IC2
1	~	USIP:Transformer	8:1Transformer

The 70 most common of 71 parts.

Questions

How big is the VLF PCB PCB?

It measures 115 × 85 mm and has 4 copper layers, 1.6 mm thick.

What parts does the VLF PCB use?

71 parts, built around the AD797ANZ and TL084CN. 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 VLF PCB KiCad files?

From the Able-Digital-Logic/VLF-PCB repository on GitHub, at the commit this page was made from: the board is PCB/VLFPCB/VLFPCB.kicad_pcb and its schematic PCB/VLFPCB/VLFPCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the VLF PCB design in my own project?

Its repository states no licence, so its author keeps all rights: ask Able-Digital-Logic 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/able-digital-logic-vlf-pcb" title="VLF PCB 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/able-digital-logic-vlf-pcb.jpg" alt="VLF PCB" width="1200" height="900">

A picture that opens the board, for a README

[![VLF PCB](https://pcbkit.io/embed/boards/able-digital-logic-vlf-pcb.jpg?size=s)](https://pcbkit.io/boards/able-digital-logic-vlf-pcb)

Source

Repository: Able-Digital-Logic/VLF-PCB
Board file: PCB/VLFPCB/VLFPCB.kicad_pcb
Commit: afddba4
Licence: Not stated

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