4 layers84.4 × 73 mm
Rp2350 devboard freerouting clean
absmach/synth
Open-source circuit compiler for engineers and AI agents
58 parts29Apache-2.0
2 layers114.9 × 76 mm
Protected power entry
absmach/synth29Open-source circuit compiler for engineers and AI agents
- Size
- 114.9 × 76 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 34
- Pads
- 178
- Tracks, vias
- 288, 44
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 9 Sep 2026
- Updated
- 6 Nov 2026
Overview
Protected power entry is an open-source printed circuit board by absmach, from the absmach/synth repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 114.9 × 76 mm with 84 parts on 34 nets, routed with 288 tracks and 44 vias.
It is built around the MP2307DN-LF-Z, AMS1117-3.3 and S2B-XH-A-1(LF)(SN), with the 1812L150/16DR, BZT52C3V3 and BZT52C5V1-TP among its other parts. Its parts include 24 resistors, 20 capacitors, 13 diodes, 5 connectors and 3 ICs.
Main components
12
MP2307DN-LF-Z
SOIC-8N-EP-150mil-40℃~+85℃ 1 340kHz 3A 4.75V~23V 925mV~20V Adjustable Buck Buck Built-in Yes SOIC-8N-EP-150mil DC-DC Converters ROHSMonolithic Power SystemsDC-DC Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
S2B-XH-A-1(LF)(SN)
弯插,P=2.5mm-25℃~+85℃ 1 11.5mm 1x2P 2 2.5mm 250V 2P 3A 6.1mm 7.4mm Brass K Pin PA66 Right Angle Tin UL94V-0 White XH 弯插,P=2.5mm Wire To Board Connector ROHSJSTWire To Board Connector
1812L150/16DR
1812-40℃~+85℃ 1.25mm 1.5A 100A 110mΩ 16V 2.8A 3.41mm 4.73mm 40mΩ 500ms 800mW 1812 Resettable Fuses ROHSLittelfuseResettable Fuses
BZT52C3V3
SOD-123-55℃~+150℃ 1 Independent 3.1V~3.5V 3.3V 500mW 5uA 600Ω 95Ω SOD-123 Zener Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Zener DiodesBZT52C5V1-TP
SOD-123-65℃~+150℃ 1 Independent 2uA@2V 4.8V~5.4V 480Ω 5.1V 500mW 60Ω SOD-123 Zener Diodes ROHSMicro Commercial ComponentsZener Diodes
1N5819HW-7-F-01
SOD-123Schottky DiodesDiodes Incorporated
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
LTST-C190KGKT
0603-30℃~+85℃ 130° 20mA 2V 35mcd 567.5nm~576.5nm 574nm 75mW Discrete Diode Water Clear Yellow Green 0603 LED Indication - Discrete ROHSLite-OnLED Indication - DiscreteLTST-C190KRKT
0603-30℃~+85℃ 130° 20mA 2V 62.5mW 631nm 639nm 99mcd Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
SMAJ13A
DO-214AC(SMA)-55℃~+150℃ 13V 15.9V 18.6A 1uA 21.5V 400W@10/1000us IEC 61000-4-2 TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
SRN6045TA-100M
SMD,6x6mm10uH 3.2A 4.6A 52mΩ ±20% SMD,6x6mm Power Inductors ROHSBournsPower Inductors
README
examples/rp2350/README.mdRP2350 routed example
Latest regenerated run
The full-board reconstruction routes with the installed FreeRouting pipeline
on six layers. Local generated artifacts are under
reproductions/rp2350-reconstructed/generated/:
rp2350_devboard_reconstructed.synth— reconstructed Synth sourcerp2350_devboard_reconstructed.layout.toml— recovered placement sidecarrp2350_devboard_freerouted_6layer.kicad_pcb— routed KiCad boardrp2350_devboard_freerouted_6layer.png— rendered review imagefreerouted-6layer-drc.rpt— native KiCad DRC report
FreeRouting completed with 0 unrouted signal nets. The DRC report still contains 14 ground-zone island items and two footprint-library warnings; this is not production sign-off until those items are reviewed.
rp2350_devboard_freerouting_clean.kicad_pcb is a pre-generated compact KiCad
review artifact.
Reference dimensions: approximately 84.5 × 73.1 mm.
Open the KiCad board for an interactive review.
The companion DRC report records the current review state. The authoritative KiCad check currently reports 80 DRC violations and 18 unconnected items. The 18 unconnected entries are zone-to-zone ground-island reports, not ordinary signal-pad pairs, but they are still violations. This is an example and review fixture, not production sign-off; silkscreen and footprint library warnings also require engineering review.
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | (no value) | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R4, R10, R13, R14, R16, R17 |
| 6 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C6, C18, C19, C20, C21 |
| 6 | 1k | Resistor_SMD:R_0603_1608Metric | R8, R12, R15, R18, R21, R22 |
| 4 | (no value) | MountingHole:MountingHole_2.5mm | H1, H2, H3, H4 |
| 4 | S2B-XH-A-1(LF)(SN) | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | J1, J3, J4, J5 |
| 3 | (no value) | LED_SMD:LED_0603_1608Metric | D2, D3, D6 |
| 3 | 100uF 25V | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C10, C17 |
| 3 | 10uF 10V | Capacitor_SMD:C_1206_3216Metric | C12, C15, C16 |
| 3 | 1812L150/16DR | Fuse:Fuse_1812_4532Metric | F1, F2, F3 |
| 3 | 22uF 10V | Capacitor_SMD:C_1206_3216Metric | C8, C9, C14 |
| 3 | BZT52C3V3 | Diode_SMD:D_SOD-123 | D11, D12, D13 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R5, R7 |
| 2 | 10uF 25V | Capacitor_SMD:C_1206_3216Metric | C2, C3 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C7, C13 |
| 2 | 3.3k | Resistor_SMD:R_0603_1608Metric | R20, R24 |
| 2 | BZT52C5V1-TP | Diode_SMD:D_SOD-123 | D9, D10 |
| 1 | (no value) | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | 0603-GREEN | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 1N5819HW-7-F | Diode_SMD:D_SOD-123 | D8 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 33k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R19 |
| 1 | 44.2k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | LTST-C190KGKT | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | LTST-C190KRKT | LED_SMD:LED_0603_1608Metric | D7 |
| 1 | MP2307DN-LF-Z | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm | U1 |
| 1 | SMAJ13A | Diode_SMD:D_SMA | D1 |
| 1 | SRN6045TA-100M | Inductor_SMD:L_Bourns_SRN6045TA | L1 |
| 1 | TPS22918DBVR | Package_TO_SOT_SMD:SOT-23-6 | U3 |
Questions
How big is the Protected power entry PCB?
It measures 114.9 × 76 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Protected power entry use?
84 parts, built around the MP2307DN-LF-Z, AMS1117-3.3, S2B-XH-A-1(LF)(SN) and 1812L150/16DR. 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 Protected power entry KiCad files?
From the absmach/synth repository on GitHub, at the commit this page was made from: the board is qualification/class-a/protected-power-entry/export/protected_power_entry.kicad_pcb and its schematic qualification/class-a/i2c-sensor-node/export/i2c_sensor_node.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Protected power entry design in my own project?
Its repository publishes it under the Apache-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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