RTB C12
About the RTB C12 PCB
RTB C12 is an open source PCB design by git4dcc, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 90.3 × 26.6 mm, with 93 components from 52 distinct parts.
Other key parts include the BD63573NUV-E2, C547123, 74AHC1G08, INA181A1 and LM393. By type, the board carries 42 resistors, 19 diodes, 15 capacitors, 9 ICs, 3 connectors and 2 jumpers.
From the project
DCC Railcom booster
My homebrew RTB C12 Micro Booster implements a booster, DCC generator and Real-time Railcom detector. The booster is optimized for N-scale in respect to track voltage and current.
- RTBC10 - Master - RTBC11 - Power - RTBC13 - Track Sensor - RTBP15 - Base
This project is intended for hobby use only and is distributed in accordance with the Apache License 2.0 agreement.
Main components on the RTB C12
RTB C12 bill of materials (BOM)
93 components, 52 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BD63573NUV-E2 | VSON-10-1EP_3x3mm_P0.5mm_EP1.2x2mm | IC1 |
| 1 | C547123 74HC595BQ,115 | DHVQFN-16-1EP_2.5x3.5mm_P0.5mm_EP1x2mm | IC3 |
| 1 | 74AHC1G08 | SOT-353_SC-70-5 | U1 |
| 1 | INA181A1 | SOT-23-6 | U3 |
| 1 | LM393 | DFN-8-1EP_NG_2x2mm_Pitch0.5mm | U4 |
| 1 | MIC5235-3.3 | SOT-23-5 | U5 |
| 1 | AVR64DA48 | QFN-48-1EP_6x6mm_P0.4mm_EP4.2x4.2mm | U6 |
| 1 | OPA521 | QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm | U8 |
| 1 | MCP9700AT-ETT | SOT-23 | U15 |
| 1 | BC847BDW1 | SOT-363_SC-70-6 | Q1 |
| 1 | ASE-24MHZ ASE-24MHz | Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm | X1 |
| 1 | Debug IF | PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | Slot Connector | PinHeader_1x32_P2.54mm_Vertical | J2 |
| 1 | UPDI | PinHeader_2x03_P1.27mm_Vertical | J3 |
| 1 | Heatsink | Heatsink_AAVID_573300D00010G_TO-263 | HS1 |
| 1 | JUMPER_2_OPEN Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | SOLDERJUMPER_2_OPEN SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 2 | BAT54S | SOT-323_SC-70 | D3, D4 |
| 1 | C84264 Green | LED_0603_1608Metric | D5 |
| 2 | SS34FA | D_SOD-123F | D6, D9 |
Show 32 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LED | LED_0603_1608Metric | D8, D16 |
| 1 | C2986060 Red | LED_0603_1608Metric | D12 |
| 1 | C434421 Blue | LED_0603_1608Metric | D13 |
| 7 | C2290 LED_Small | LED_0603_1608Metric | D14, D32, D33, D34, D35, D36, D37 |
| 1 | C81181 D_Schottky_Small | D_MiniMELF | D17 |
| 1 | BAT54C | SOT-323_SC-70 | D31 |
| 1 | C2290 LED(wht) | LED_0603_1608Metric | D38 |
| 5 | 22UF 22uF | C_1206_3216Metric | C1, C4, C8, C9, C19 |
| 2 | 10UF 10uF | C_0805_2012Metric | C2, C3 |
| 2 | 1UF 1uF | C_0603_1608Metric | C5, C21 |
| 4 | 100NF 100nF | C_0402_1005Metric | C6, C10, C14, C15 |
| 2 | 100NF 100nF | C_0603_1608Metric | C11, C20 |
| 2 | 3.3K 3.3k | R_0402_1005Metric | R1, R19 |
| 2 | 100K 100k | R_0603_1608Metric | R2, R22 |
| 6 | 1k | R_0603_1608Metric | R3, R4, R5, R6, R33, R34 |
| 2 | 82K 82k | R_0603_1608Metric | R7, R8 |
| 1 | 22 | R_0805_2012Metric | R9 |
| 1 | 56K 56k | R_0603_1608Metric | R10 |
| 1 | 33K 33k | R_0603_1608Metric | R11 |
| 2 | 10K 10k | R_0603_1608Metric | R12, R35 |
| 3 | 220K 220k | R_0603_1608Metric | R13, R18, R27 |
| 3 | 9.1K 9.1k | R_0603_1608Metric | R14, R21, R23 |
| 2 | n.f. | R_0603_1608Metric | R15, R16 |
| 1 | 0.025 | R_2010_5025Metric | R17 |
| 1 | 100 | R_0603_1608Metric | R20 |
| 5 | 3.3K 3.3k | R_0603_1608Metric | R24, R25, R28, R30, R39 |
| 2 | 300 | L_1206_3216Metric | R26, R32 |
| 1 | 4.7K 4.7k | R_0603_1608Metric | R29 |
| 1 | 10K 10k | R_0805_2012Metric | R31 |
| 3 | 22K 22k | R_0603_1608Metric | R36, R37, R38 |
| 1 | 10k | R_0603_1608Metric | R46 |
| 2 | 4.7K 4.7k | R_Array_Convex_4x0603 | RN3, RN4 |
RTB C12 design files
The KiCad project lives in the git4dcc/RTB_C12 repository on GitHub; these links point at the commit this page was built from.
- LayoutC12.kicad_pcb
- SchematicC12.kicad_sch
- BOMgerber/C12_2_bom.csv
RTB C12: common questions
How big is the RTB C12 PCB?
The RTB C12 measures 90.3 × 26.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the RTB C12?
93 components, from 52 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 RTB C12 design files?
From the git4dcc/RTB_C12 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 RTB C12 design in my own project?
Yes, under the terms of its Apache-2.0 license, which git4dcc chose for the repository.