RTB D22
About the RTB D22 PCB
RTB D22 is an open source PCB design by git4dcc, published on GitHub under the Apache-2.0 license. It is a 6-layer board measuring 15.4 × 11.4 mm, with 48 components from 28 distinct parts.
Other key parts include the AVR64DD28-I_STX, NCP730BMT500TBG, DRV8231ADSGR and NCP730BMT1500TBG. By type, the board carries 24 resistors, 7 capacitors, 6 transistors, 5 diodes, 4 ICs and 2 connectors.
From the project
DCC / Railcom decoder (Plux16, double sided)
My Homebrew D22 decoder is a double sided mobile decoder with Plux16 connector. The decoder is designed to integrate into the RTB digital control infrastructure.
- RTBD12 - custom (Fleischmann V100) - RTBD13 - custom (Minitrix coach) - RTBD15 - custom (Minitrix V160) - RTBD16 - NEM651 - RTBD20 - NEM651 - RTBD21 - Next18 - RTB_D23 - NEM652
:yellowcircle: Requires my Kicad project library RTBSamacSys in the same directory tree.
Main components on the RTB D22
RTB D22 bill of materials (BOM)
48 components, 28 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AVR64DD28-I_STX | QFN-28-1EP_4x4mm_P0.4mm_EP2.3x2.3mm | IC1 |
| 1 | NCP730BMT500TBG | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | IC2 |
| 1 | DRV8231ADSGR | SON50P200X200X80-9N | IC3 |
| 1 | NCP730BMT1500TBG | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | IC4 |
| 1 | BC847BDW1 | SOT-666 | Q1 |
| 1 | BC857BDW1 | SOT-666 | Q2 |
| 4 | PMZB200UNEYL | Diodes_DFN1006-3 | Q3, Q4, Q5, Q6 |
| 1 | CONN_02X08_COUNTER_CLOCKWISE Conn_02x08_Counter_Clockwise | PinHeader_2x08_P1.27mm_Vertical_SMD | J1 |
| 1 | CONN_01X01 Conn_01x01 | Solder 0.8 x 0.5 | J2 |
| 3 | SM5819L2-TP | SM5819L2TP | D1, D2, D4 |
| 1 | LED | LED_0402_1005Metric | D3 |
| 1 | BAS3007ARPPE6327HTSA1 | BF998215 | D8 |
| 2 | 10U/25V 10u/25V | C_0603_1608Metric | C1, C2 |
| 2 | 22U/6V 22u/6V | C_0603_1608Metric | C3, C5 |
| 1 | 1U/50V 1u/50V | C_0402_1005Metric | C6 |
| 2 | 100N/50V 100n/50V | C_0402_1005Metric | C8, C10 |
| 4 | 33K 33k | R_0402_1005Metric | R1, R2, R15, R17 |
| 1 | 3.3K 3.3k | R_0402_1005Metric | R3 |
| 1 | 22 | R_0402_1005Metric | R4 |
| 5 | 10K 10k | R_0402_1005Metric | R5, R6, R11, R12, R24 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 220K 220k | R_0402_1005Metric | R7, R8, R14 |
| 2 | 9.1K 9.1k | R_0402_1005Metric | R9, R10 |
| 1 | 1k | R_0402_1005Metric | R13 |
| 2 | 12K 12k | R_0402_1005Metric | R16, R18 |
| 1 | 1 | R_0603_1608Metric | R19 |
| 1 | 47K 47k | R_0402_1005Metric | R20 |
| 2 | 470 | R_0402_1005Metric | R21, R22 |
| 1 | 100 | R_0603_1608Metric | R23 |
RTB D22 design files
The KiCad project lives in the git4dcc/RTB_D22 repository on GitHub; these links point at the commit this page was built from.
- LayoutD22.kicad_pcb
- SchematicD22.kicad_sch
- BOMproduction/bom.csv
RTB D22: common questions
How big is the RTB D22 PCB?
The RTB D22 measures 15.4 × 11.4 mm, has 6 copper layers and is 0.8 mm thick.
How many components are on the RTB D22?
48 components, from 28 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 D22 design files?
From the git4dcc/RTB_D22 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 D22 design in my own project?
Yes, under the terms of its Apache-2.0 license, which git4dcc chose for the repository.