4 layers86 × 198 mm
4 layers86 × 100 mm
DB25 encoder card
ExcessiveMotion/controller-hardware87- Size
- 86 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 217
- Nets
- 222
- Pads
- 880
- Tracks, vias
- 2,045, 431
- Pours
- 23
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Sep 2023
- Updated
- 5 Sep 2025
Overview
DB25 encoder card is an open-source printed circuit board by ExcessiveMotion, from the ExcessiveMotion/controller-hardware repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 4-layer board of 86 × 100 mm with 217 parts on 222 nets, routed with 2,045 tracks and 431 vias.
It is built around the 74LVC125AD, THVD1420D and AP63201WU, with the D1213A-04S-7-ES, TCA9555PWR(UMW) and AOZ1360AIL among its other parts. Its parts include 100 resistors, 49 capacitors, 35 ICs, 23 diodes and 2 connectors.
Main components
7
74LVC125AD
SOP-14L-40℃~+125℃ 1 1.65V~5.5V 2.6ns@5V,15pF 4 40uA 50mA 50mA 74LVC Schmitt trigger Tri-State Unidirectional SOP-14L Buffers, Drivers, Receivers, Transceivers ROHSMDDBuffers, Drivers, Receivers, Transceivers
THVD1420D
SOIC-8-40℃~+125℃ 1 1 1.5mA 12Mbps 256 3V~5.5V Half-Duplex Transceiver ±12kV SOIC-8 RS-485 / RS-422 ICs ROHSTexas InstrumentsRS-485 / RS-422 ICs
AP63201WU
TSOT-23-6-40℃~+85℃ 1 22uA 2A 3.8V~32V 500kHz Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
D1213A-04S-7-ES
SOT-363SOT-363 ESD and Surge Protection (TVS/ESD) ROHSElecSuperUncategorised
TCA9555PWR(UMW)
TSSOP-24TSSOP-24 I/O Expanders ROHSUMWI/O ExpandersAOZ1360AIL
SOIC-8-40℃~+125℃ 1 22mΩ 5.5V~28V Active High High Side Switch Undervoltage Protection(UVP)、Over Temperature Protection SOIC-8 Power Distribution Switches ROHSAlpha & Omega SemiconductorPower Distribution Switches
L77HDB44SD1CH4F
弯插-55℃~+105℃ 3 3A 44P Female Right Angle 弯插 D-Sub / VGA Connectors ROHSAmphenolD-Sub / VGA Connectors
README
README.mdcontroller-hardware
Parts
217| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | 10 | Resistor_SMD:R_0603_1608Metric | R1, R2, R13, R14, R15, R16, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34 +24 |
| 31 | 10K | Resistor_SMD:R_0603_1608Metric | R3, R4, R5, R10, R11, R12, R17, R18, R19, R20, R21, R22, R23, R24, R53, R54 +15 |
| 30 | .1uf | Capacitor_SMD:C_0603_1608Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +14 |
| 20 | 120 | Resistor_SMD:R_0603_1608Metric | R81, R82, R83, R84, R85, R86, R87, R88, R89, R90, R91, R92, R93, R94, R95, R100 +4 |
| 20 | SM712_SOT23 | Package_TO_SOT_SMD:SOT-23 | D1, D2, D3, D4, D5, D10, D11, D12, D13, D14, D15, D16, D17, D18, D21, D22 +4 |
| 17 | 10uf | Capacitor_SMD:C_1206_3216Metric | C27, C30, C33, C34, C35, C36, C37, C40, C41, C42, C43, C44, C45, C46, C47, C48 +1 |
| 10 | 74LVC125 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U4, U6, U7, U11, U12, U13, U14, U20, U21 |
| 10 | THVD1420D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3, U5, U8, U9, U15, U16, U17, U18, U24, U25 |
| 6 | D1213A-04S-7 | footprints:SOT-363_DIO | U27, U28, U29, U30, U31, U32 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R78, R79, R80 |
| 3 | 158K | Resistor_SMD:R_0603_1608Metric | R69, R71, R75 |
| 3 | AM26LV32xD | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2, U10, U19 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D19, D20, D23 |
| 3 | TCA9555PWR | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U22, U23, U26 |
| 2 | 100pf | Capacitor_SMD:C_0603_1608Metric | C32, C39 |
| 2 | 10uH | Inductor_SMD:L_Taiyo-Yuden_MD-5050 | L1, L2 |
| 2 | 30.1k | Resistor_SMD:R_0603_1608Metric | R70, R72 |
| 2 | AP63201WU | Package_TO_SOT_SMD:TSOT-23-6 | U34, U35 |
| 2 | Jumper_3_Bridged12 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1, JP2 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R64 |
| 1 | AOZ1360AIL | footprints:AOZ1360AIL_AOS | U33 |
| 1 | L77HDB44SD1CH4F | footprints:CONN_L77HDB44SD1CH4F_AMP | J2 |
| 1 | Motion Controller Interface | footprints:64pin card | J1 |
The 213 most common of 217 parts.
Questions
How big is the DB25 encoder card PCB?
It measures 86 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the DB25 encoder card use?
217 parts, built around the 74LVC125AD, THVD1420D, AP63201WU and D1213A-04S-7-ES. 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 DB25 encoder card KiCad files?
From the ExcessiveMotion/controller-hardware repository on GitHub, at the commit this page was made from: the board is KiCad/DB25 encoder card/DB25 encoder card.kicad_pcb and its schematic KiCad/DB25 encoder card/DB25 encoder card.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DB25 encoder card design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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