State Variable Filter

xdylanm·state-variable-filter·hardware/svf-1/svf-1.kicad_pcb

State Variable Filter PCB layout, top view — open source board by xdylanm

About the State Variable Filter PCB

State Variable Filter is an open source PCB design by xdylanm, published on GitHub under the MIT license. It is a 4-layer board measuring 38.5 × 100 mm, with 74 components from 29 distinct parts.

Other key parts include the TL074, LM13700 and TL072. By type, the board carries 34 resistors, 16 capacitors, 9 connectors, 3 ICs, 2 diodes and 1 transistor.

It belongs with the audio designs in this gallery.

From the project

A state variable filter module for Eurorack

Main components on the State Variable Filter

TL074 LM13700 TL072

State Variable Filter bill of materials (BOM)

74 components, 29 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	TL074	SOIC-14_3.9x8.7mm_P1.27mm	U1
1	LM13700	SOIC-16_3.9x9.9mm_P1.27mm	U2
1	TL072	SOIC-8_3.9x4.9mm_P1.27mm	U3
1	DMMT5401	SOT-23-6_Handsoldering	Q1
8	WQP-PJ301M-12 MonoJack	Jack_3.5mm_QingPu_WQP-PJ301M-12_Vertical	J1, J2, J3, J4, J5, J6, J7, J8
1	IDC Header 10P	IDC-Header_2x05_P2.54mm_Vertical	J9
5	B100K B100k	Potentiometer_Bourns_PTV09A-1_Single_Vertical_thin	RV1, RV2, RV3, RV4, RV5
1	100R	Potentiometer_Bourns_TC33X_Vertical	RV6
2	100K 100k	Potentiometer_Bourns_3296W_Vertical	RV7, RV8
1	2k, 3900ppm/C	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	TH1
2	B140-E3	D_SMA	D1, D2
1	1u	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1
2	10P 10p	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2, C4
2	330P 330p	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3, C5
1	100P 100p	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C6
8	100N 100n	C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C7, C8, C9, C10, C11, C12, C13, C14
2	10U 10u	CP_Radial_D5.0mm_P2.50mm	C15, C16
8	100K 100k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2, R4, R6, R11, R14, R16, R18
1	22K 22k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3
4	1k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R5, R10, R19, R20

Show 9 more

Qty	Part	Footprint	Refs
5	220R	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7, R8, R13, R15, R28
3	15K 15k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R9, R17, R27
1	47R	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R12
2	10K 10k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R21, R22
4	82K 82k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R23, R24, R25, R26
1	560K 560k	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R29
1	4K7 4k7	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R30
2	10R	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R31, R32
2	1M0	R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R33, R34

State Variable Filter design files

The KiCad project lives in the xdylanm/state-variable-filter repository on GitHub; these links point at the commit this page was built from.

State Variable Filter: common questions

How big is the State Variable Filter PCB?

The State Variable Filter measures 38.5 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the State Variable Filter?

74 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the State Variable Filter design files?

From the xdylanm/state-variable-filter repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the State Variable Filter design in my own project?

Yes, under the terms of its MIT license, which xdylanm chose for the repository.

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