2 layers76 × 135 mm
4 layers127 × 50.8 mm
Sub module programmer
TommyPersson/modular-keypads- Size
- 127 × 50.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 30
- Pads
- 129
- Tracks, vias
- 252, 243
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Sep 2025
- Updated
- 7 Nov 2026
Overview
Sub module programmer is an open-source printed circuit board by TommyPersson, from the TommyPersson/modular-keypads repository on GitHub. It is a 4-layer board of 127 × 50.8 mm with 49 parts on 30 nets, routed with 252 tracks and 243 vias.
It is built around the 74AHCT1G125SE and AP2171WG. Its parts include 11 resistors, 8 connectors, 7 capacitors, 7 diodes and 4 ICs. It belongs with the interfaces and adapters boards of this library.
Main components
2
74AHCT1G125SE
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, Transceivers
AP2171WG
SOT-25-5-40℃~+85℃ 1 1A 2.7V~5.5V 95mΩ Active High High Side Switch Overcurrent Protection(OCP)、Overtemperature protection (OTP) SOT-25-5 Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12 |
| 8 | 100 | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 6 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1, J3, J4, J5, J6, J7 |
| 5 | TVS | Package_TO_SOT_SMD:SOT-723 | D1, D2, D3, D6, D7 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C6, C7 |
| 2 | 1 | Resistor_SMD:R_0805_2012Metric | R10, R11 |
| 2 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | AP2171W | Package_TO_SOT_SMD:SOT-23-5 | U2, U3 |
| 2 | TVS | Diode_SMD:Nexperia_CFP3_SOD-123W | D4, D5 |
| 1 | 0.1 uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 10 uF | Capacitor_SMD:C_1206_3216Metric | C3 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 22 uF | Capacitor_SMD:C_1206_3216Metric | C4 |
| 1 | 74AHCT1G125 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | Serial Bridge | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J8 |
Questions
How big is the Sub module programmer PCB?
It measures 127 × 50.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Sub module programmer use?
49 parts, built around the 74AHCT1G125SE and AP2171WG. 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 Sub module programmer KiCad files?
From the TommyPersson/modular-keypads repository on GitHub, at the commit this page was made from: the board is pcb/module-c/sub-module-programmer-r2/sub-module-programmer.kicad_pcb and its schematic pcb/epaper-driver/epaper-driver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sub module programmer design in my own project?
Its repository states no licence, so its author keeps all rights: ask TommyPersson before reusing the design.
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