4 layers79.2 × 152.4 mm
2 layers
Vca mix
sgreene30/Synthesis-Projects- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 190
- Nets
- 148
- Pads
- 561
- Tracks, vias
- 1,108, 220
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Apr 2023
- Updated
- 21 Jun 2026
Overview
Vca mix is an open-source printed circuit board by sgreene30, from the sgreene30/Synthesis-Projects repository on GitHub. It is a 2-layer board with 190 parts on 148 nets, routed with 1,108 tracks and 220 vias.
It is built around the TL072, LM13700M and MMBT3906, with the MMBT3904 and MBR0530-TP among its other parts. Its parts include 101 resistors, 35 capacitors, 14 connectors, 12 transistors and 10 ICs.
Main components
5
TL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
LM13700M
SOIC-16-16V~-4.75V、4.75V~16V 0℃~+70℃ 110dB 2 2.6mA 20mA 400nA 4mV 50V/us 600nA 9.5V~32V SOIC-16 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
MBR0530-TP
SOD-123Schottky DiodesMicro Commercial Components
Parts
190| Qty | Value | Footprint | References |
|---|---|---|---|
| 25 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R18, R24, R25, R28, R35, R39, R41, R48, R50, R54, R56, R63, R65, R69, R100 +9 |
| 18 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C10, C11, C12, C13, C14, C15, C16, C27, C28 +2 |
| 18 | 20k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R11, R14, R31, R32, R34, R37, R46, R49, R52, R61, R64, R67, R76, R79 +2 |
| 13 | DNP | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C18, C19, C20, C21, C22, C23, C24, C29, C30, C31, C32, C33 |
| 13 | Thonkiconn | synthesis:thonkiconn | J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14 |
| 12 | 200k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R23, R26, R38, R42, R45, R53, R57, R60, R68, R72, R75 |
| 8 | 0R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R81, R82, R83, R84, R85, R86, R87, R88 |
| 8 | 10k | synthesis:alpha_pot | RV5, RV6, RV7, RV8, RV9, RV10, RV11, RV12 |
| 8 | 430R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R5, R6, R12, R13, R16, R17 |
| 8 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4, Q6, Q7, Q9, Q10, Q12 |
| 5 | 100R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R89, R90, R91, R92, R93 |
| 4 | 100R | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1, RV2, RV3, RV4 |
| 4 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R43, R58, R73 |
| 4 | 120k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R30, R47, R62, R77 |
| 4 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29, R40, R55, R70 |
| 4 | 3k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27, R44, R59, R74 |
| 4 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10, R19, R20 |
| 4 | 6k2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33, R36, R51, R66 |
| 4 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q5, Q8, Q11 |
| 4 | SW_SPDT | synthesis:Mini_sw | SW1, SW2, SW3, SW4 |
| 4 | TL074 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U5, U6, U7, U8 |
| 3 | TL072 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U3, U4, U9 |
| 2 | 100p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C34, C35 |
| 2 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C25, C26 |
| 2 | LM13700 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U1, U2 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R101 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D2 |
| 1 | LM4040DBZ-3 | Package_TO_SOT_SMD:SOT-23 | U10 |
| 1 | MBR0530-TP | Diode_SMD:D_SOD-123 | D1 |
| 1 | power | synthesis:PinSocket_2x05_P2.54mm_Vertical | J1 |
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Questions
What parts does the Vca mix use?
190 parts, built around the TL072, LM13700M, MMBT3906 and MMBT3904. 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 Vca mix KiCad files?
From the sgreene30/Synthesis-Projects repository on GitHub, at the commit this page was made from: the board is Hardware/Source Files/legacy/VCA_mix/vca_mix/vca_mix.kicad_pcb and its schematic Hardware/Source Files/200 Series/200_Plattform/200_Plattform.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Vca mix design in my own project?
Its repository states no licence, so its author keeps all rights: ask sgreene30 before reusing the design.