TJA1055-3-Breakout-Board
About the TJA1055-3-Breakout-Board
TJA1055-3-Breakout-Board is an open source PCB design by korni92, published on GitHub. It is a 2-layer board measuring 44.5 × 53.5 mm, with 38 components from 21 distinct parts.
Other key parts include the TJA1055T/3/1J and MCP2515-xSO. By type, the board carries 15 resistors, 11 connectors, 8 capacitors, 2 ICs, 1 crystal and 1 diode.
It belongs with the power & battery and dev boards & breakouts designs in this gallery.
From the project
To use with 3,3V micocontroller like ESP or PI.
An open-hardware breakout for low-speed fault-tolerant CAN (ISO 11898-3), built around the NXP TJA1055T/3 transceiver with an optional on-board Microchip MCP2515 CAN controller. Runs directly from 3.3 V hosts — Raspberry Pi, ESP32 — with no level shifters.
If you just want CAN and don't care about the transceiver's power-management features:
1. Fit both SWITCH jumpers (J10, J11). Without them STB and EN are pulled low internally and the transceiver sits in sleep — the board looks dead. 2. Leave both TERM jumpers (J6, J7) open when connecting to a vehicle. The bus is already terminated. 3.…
Main components on the TJA1055-3-Breakout-Board
TJA1055-3-Breakout-Board bill of materials (BOM)
38 components, 21 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TJA1055T/3/1J | SOIC127P600X175-14N | IC1 |
| 1 | MCP2515-xSO | SOIC-18W_7.5x11.6mm_P1.27mm | U1 |
| 1 | X49SM8MSD2SC 8MHZ | Crystal_SMD_HC49-SD | Y1 |
| 1 | Conn_01x10_Pin | PinSocket_1x10_P2.54mm_Vertical | J1 |
| 2 | Conn_01x03_Pin | PinSocket_1x03_P2.54mm_Vertical | J2, J4 |
| 1 | Conn_01x05_Pin | PinSocket_1x05_P2.54mm_Vertical | J3 |
| 5 | Conn_01x02_Pin | PinSocket_1x02_P2.54mm_Vertical | J6, J7, J9, J10, J11 |
| 1 | 282834-2 | 282834-2_1 | J8 |
| 1 | Conn_01x01_Pin | PinHeader_1x01_P2.54mm_Vertical | J12 |
| 1 | PMEG4010CEH | D_SOD-123F | D1 |
| 2 | 100 nF X7R | C_0603_1608Metric | C1, C2 |
| 2 | 22 pF C0G | C_0603_1608Metric | C3, C4 |
| 2 | 100 pF C0G | C_0603_1608Metric | C5, C6 |
| 1 | 10 nF 50V X7R | C_0603_1608Metric | C7 |
| 1 | 100 uF 16 V Alu Poly | CP_Elec_6.3x5.8 | C8 |
| 4 | 4.7 kΩ | R_0603_1608Metric | R1, R5, R9, R12 |
| 6 | 10 kΩ | R_0603_1608Metric | R4, R6, R7, R8, R16, R17 |
| 2 | 620 Ω | R_0603_1608Metric | R10, R11 |
| 1 | 1 kΩ | R_0603_1608Metric | R13 |
| 1 | 47 kΩ | R_0603_1608Metric | R14 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100 kΩ | R_0603_1608Metric | R15 |
TJA1055-3-Breakout-Board design files
The KiCad project lives in the korni92/TJA1055-3-Breakout-Board repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/TJA1055-3.kicad_pcb
- SchematicPCB/TJA1055-3.kicad_sch
- BOMPCB/bom_jlcpcb.xls
TJA1055-3-Breakout-Board: common questions
How big is the TJA1055-3-Breakout-Board?
The TJA1055-3-Breakout-Board measures 44.5 × 53.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TJA1055-3-Breakout-Board?
38 components, from 21 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 TJA1055-3-Breakout-Board design files?
From the korni92/TJA1055-3-Breakout-Board 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 TJA1055-3-Breakout-Board design in my own project?
The repository has no license, so all rights stay with korni92. Use it as a reference, and ask the author before reusing the design.
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