2 layers83.5 × 86.5 mm
2 layers91.8 × 98 mm
Unión final
impatrq/REDUX- Size
- 91.8 × 98 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 143
- Nets
- 113
- Pads
- 419
- Tracks, vias
- 803, 84
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Apr 2026
- Updated
- 5 Nov 2026
Overview
Unión final is an open-source printed circuit board by impatrq, from the impatrq/REDUX repository on GitHub. It is a 2-layer board of 91.8 × 98 mm with 143 parts on 113 nets, routed with 803 tracks and 84 vias.
It is built around the B0505S-1W, TL084 and TL072, with the LM2596S-5.0 among its other parts. Its parts include 59 capacitors, 48 resistors, 15 connectors, 9 ICs and 5 diodes. It belongs with the RP2040 boards of this library.
Main components
4
B0505S-1W
SIP-4-45℃~+85℃ 1 1.5kV 100uF 1W 200mA 23mA 4.5V~5.5V 5V 60mVp-p 77kHz 79% SIP-4 Isolated Power Modules ROHSEVISUNIsolated Power Modules
TL084
SOP-14-18V~18V 0℃~+70℃ 1.4mA 16V/us 20nA 3mV 4MHz 4nA 60mA 75dB Four channels Short-Circuit Protection、Built-in compensation SOP-14 FET Input Amplifiers ROHSGcoreOperational Amplifier
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
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
README
README.mdREDUX
Parts
143| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | 10KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17, R19, R20, R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42 +4 |
| 16 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C6, C32, C33, C36, C37, C44, C45, C46, C47, C52, C53, C58, C59 |
| 14 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8, C9, C10, C34, C35, C40, C41, C48, C49, C50, C51, C54, C55 |
| 10 | 3.3nf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14, C15, C18, C19, C23, C25, C28, C29, C38, C39 |
| 4 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D3, D4 |
| 4 | 33nf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C13, C22, C24 |
| 4 | 4.7nf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16, C17, C26, C27 |
| 4 | 47nf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C20, C21, C30, C31 |
| 4 | AD620 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1, U2, U5, U6 |
| 3 | B0505s | extras:B0505S-1w | B1, B2, B3 |
| 2 | 1.5nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C42, C43 |
| 2 | 100KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R22 |
| 2 | 100nf | Capacitor_THT:C_Disc_D10.0mm_W2.5mm_P5.00mm | C56, C57 |
| 2 | 100Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R14 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R44, R48 |
| 2 | 10u_Pol | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1, C2 |
| 2 | 120KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R18 |
| 2 | 12KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27, R28 |
| 2 | 180KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25, R26 |
| 2 | 2.7KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R3 |
| 2 | 2.7kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4 |
| 2 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R43, R45 |
| 2 | 2k2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R46, R47 |
| 2 | 470Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29, R30 |
| 2 | 5K6Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23, R24 |
| 2 | 68KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R13 |
| 2 | 6N137 | Package_DIP:DIP-8_W7.62mm | U8, U9 |
| 2 | R_Potentiometer_Trim | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 2 | TL084 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U4, U7 |
| 1 | +-12V | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type011_RT05502HBLC_1x02_P5.00mm_Horizontal | J14 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11 |
| 1 | 1MΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 470kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 1 | Amp out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J4 |
| 1 | Amp1 biceps out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J5 |
| 1 | Amp2 biceps out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J8 |
| 1 | Amp2 out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J9 |
| 1 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J15 |
| 1 | D_Schottky | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D5 |
| 1 | Driver | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J13 |
| 1 | Encoder | Connector_Molex:Molex_KK-254_AE-6410-08A_1x08_P2.54mm_Vertical | J17 |
| 1 | Filtro_PB biceps out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J7 |
| 1 | Filtro_PB out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J6 |
| 1 | LM2596 | extras:LM2596 | LM1 |
| 1 | Molex brazo | Connector_Molex:Molex_KK-254_AE-6410-08A_1x08_P2.54mm_Vertical | J12 |
| 1 | RaspberryPi_Pico_W | Module:RaspberryPi_Pico_Common_THT | A1 |
| 1 | Rectificador biceps out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J10 |
| 1 | Rectificador out | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J11 |
| 1 | TFT | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J16 |
| 1 | TL072 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | Teclado 4x4 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J20 |
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Questions
How big is the Unión final PCB?
It measures 91.8 × 98 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Unión final use?
143 parts, built around the B0505S-1W, TL084, TL072 and LM2596S-5.0. 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 Unión final KiCad files?
From the impatrq/REDUX repository on GitHub, at the commit this page was made from: the board is Kicad/Versión_4/Unión final.kicad_pcb and its schematic Kicad/Versión_1/PCB_etapa_analógica.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Unión final design in my own project?
Its repository states no licence, so its author keeps all rights: ask impatrq before reusing the design.