

Balise tofs
- Size
- 91.4 × 91.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 136
- Pads
- 369
- Tracks, vias
- 629, 116
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 Nov 2017
- Updated
- 20 Oct 2026
Overview
Balise tofs is an open-source printed circuit board by EsialRobotik, from the EsialRobotik/Electronique repository on GitHub. It is a 4-layer board of 91.4 × 91.4 mm with 103 parts on 136 nets, routed with 629 tracks and 116 vias.
It is built around the 74AHCT1G125SE, PCA9535CPW and SI2307A, with the SMBJ22A among its other parts. Its parts include 40 capacitors, 35 resistors, 15 connectors, 5 ICs and 5 diodes.
Main components
474AHCT1G125SE
SOT-353-40℃~+125℃ 1 1 4.5V~5.5V 4.7ns@5V,50pF 40uA 74AHCT 8mA 8mA Schmitt trigger Tri-State Unidirectional SOT-353 Buffers, Drivers, Receivers, Transceivers ROHSDiodes IncorporatedBuffers, Drivers, Receivers, TransceiversPCA9535CPW
-- Interface - Specialized ROHSNXP SemiconductorsInterface - SpecializedSI2307A
SOT-23-55℃~+150℃ 1 P-Channel 1.25W 10nC@15V 126pF 30V 3A 3V 50mΩ@10V、70mΩ@4.5V 565pF 75pF P-Channel SOT-23 MOSFETs ROHSUMWMOSFETsSMBJ22A
DO-214AA(SMB)16.9A@10/1000us 1uA 22V 26.9V 35.5V 600W@10/1000us TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSBORNESD And Surge Protection (TVS/ESD)
Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 100 | Resistor_SMD:R_0603_1608Metric | R40, R41, R42, R43, R44, R45, R46, R47, R48, R49, R50, R51, R60, R61, R62, R63 +8 |
| 18 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C33, C34, C39, C40, C41, C42, C43, C44, C45, C46, C47, C48, C49, C50, C51 +2 |
| 12 | 10uF | Capacitor_SMD:C_0805_2012Metric | C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31 |
| 12 | Conn_02x05_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J10, J11, J12, J13, J14, J15, J16, J17, J18, J19, J20, J21 |
| 4 | 10uF / 50V | Capacitor_SMD:C_1210_3225Metric | C2, C3, C5, C35 |
| 4 | 2.2k | Resistor_SMD:R_0603_1608Metric | R20, R21, R22, R23 |
| 4 | 22uF | Capacitor_SMD:C_1210_3225Metric | C11, C12, C36, C37 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R32 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D3, D4 |
| 1 | 100uF | Capacitor_SMD:CP_Elec_8x10.5 | C1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R34 |
| 1 | 15V | Diode_SMD:D_SOD-123 | D1 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric | R33 |
| 1 | 3.9uH | Inductor_SMD:L_Sunlord_SWPA4030S | L1 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R80 |
| 1 | 4.7uH | Inductor_SMD:L_Sunlord_SWPA4030S | L2 |
| 1 | 470uF | Capacitor_SMD:CP_Elec_8x10.5 | C38 |
| 1 | 74AHCT1G125 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | AP63203WU-7 | AP63203WU-7:AP63203WU-7_DIO | U1 |
| 1 | AP63205WU-7 | AP63205WU-7:SOIC_05WU-7_DIO | U4 |
| 1 | Cavalier | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J22 |
| 1 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J2 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D5 |
| 1 | NUCLEO-G431KB | NUCLEO-G431KB:MODULE_NUCLEO-G431KB | U2 |
| 1 | PCA9535CPW | PCA9535CPW:SOT355-1_NXP | U3 |
| 1 | SI2307A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SMBJ22A | PCM_JLCPCB:D_SMB | D2 |
| 1 | Vin | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
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Questions
How big is the Balise tofs PCB?
It measures 91.4 × 91.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Balise tofs use?
103 parts, built around the 74AHCT1G125SE, PCA9535CPW, SI2307A and SMBJ22A. 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 Balise tofs KiCad files?
From the EsialRobotik/Electronique repository on GitHub, at the commit this page was made from: the board is KiCad/balise-tofs/balise-tofs.kicad_pcb and its schematic KiCad/balise-tofs/balise-tofs.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Balise tofs design in my own project?
Its repository states no licence, so its author keeps all rights: ask EsialRobotik before reusing the design.