12vhpwr standard module
About the 12vhpwr standard module
12vhpwr standard module is an open source ESP32 PCB design by nathanfraske, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 58 × 80 mm, with 90 components from 35 distinct parts.
Its main chip is the ESP32-S3-MINI-1-N4R2, from the ESP32 family. Other key parts include the TJA1051T/3, LP5907MFX-3.3, REF3030AIDBZR, TPS2121RUXR and INA240A3DR. By type, the board carries 23 capacitors, 18 resistors, 11 ICs, 4 connectors, 3 diodes and 2 switches.
It belongs with the iot & wireless and test & measurement designs in this gallery.
From the project
Standard-tier per-pin sensing module for the 12VHPWR / 12V‑2×6 (PCIe CEM 5.x, 600 W GPU) connector. BOM target $49 (100-qty). See spec §6.1.
Standard-tier per-pin sensing module for the 12VHPWR / 12V‑2×6 (PCIe CEM 5.x, 600 W GPU) connector. BOM target $49 (100-qty). See spec §6.1.
Per CLAUDE.md's 2026-07-03 alpha/beta convention: this board is the ALPHA line (validated, fab-snapshotted prototype); refinements land as BETA revisions per the standard-tier beta plan (docs/standard-tier-review/SYNTHESIS-beta-plan.md).
Main components on the 12vhpwr standard module
12vhpwr standard module bill of materials (BOM)
90 components, 35 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-MINI-1-N4R2 Espressif | ESP32-S2-MINI-1_NoAntKeepout | U1 |
| 1 | TJA1051T/3 NXP | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LP5907MFX-3.3 Texas Instruments | SOT-23-5 | U3 |
| 1 | REF3030AIDBZR REF3030 Texas Instruments | REF3030_DBZ3 | U4 |
| 1 | TPS2121RUXR Texas Instruments | RUX0012A | U5 |
| 6 | INA240A3DR INA240A3 Texas Instruments | SOIC-8_3.9x4.9mm_P1.27mm | U10, U11, U12, U13, U14, U15 |
| 1 | KH-RJ45-58-8P8C TO-HUB Kinghelm | RJ45_FTP_Shielded_Horizontal | J1 |
| 1 | 2191161161 12V-2x6 IN Molex | CEC_12V2x6_Horizontal | J3 |
| 1 | 2191161161 12V-2x6 OUT pigtail Molex | CEC_12V2x6_Horizontal | J4 |
| 1 | U262-161N-4BVC11 USB-C 2.0 XKB Connectivity | USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J5 |
| 6 | CL10B474KA8NNNC 470nF Samsung | C_0603_1608Metric | CF1, CF2, CF3, CF4, CF5, CF6 |
| 1 | 1206L075/16WR 750mA/16V PTC Littelfuse | R_1206_3216Metric | F1 |
| 12 | RT0402BRE0710RL 10Ω Yageo | R_0402_1005Metric | RFH1, RFH2, RFH3, RFH4, RFH5, RFH6, RFL1, RFL2 +4 |
| 6 | CSS2H-2512R-1L00F 1mΩ Bourns | R_2512_6332Metric | RS1, RS2, RS3, RS4, RS5, RS6 |
| 1 | TS-1088-AR02016 BOOT XKB | TS-1088-AR02016 | SW1 |
| 1 | TS-1088-AR02016 RESET XKB | TS-1088-AR02016 | SW2 |
| 2 | NCP15XH103F03RC NTC 10k Murata Electronics | NTC_0402_1005Metric | TH1, TH2 |
| 2 | PESD5V0S1BA HXY MOSFET | D_SOD-323 | D1, D4 |
| 1 | USBLC6-2SC6 UMW | SOT-23-6 | D3 |
| 1 | MPZ2012S601AT000 TDK | C_0805_2012Metric | FB1 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 0805W8F0000T5E 0R UNI-ROYAL | C_0805_2012Metric | FB2 |
| 2 | CL10B105KA8NNNC 1uF Samsung | C_0603_1608Metric | C1, C2 |
| 15 | CL05B104KO5NNNC 100nF Samsung | C_0402_1005Metric | C3, C4, C5, C8, C10, C11, C12, C13 +7 |
| 4 | CL21A106KAYNNNE 10uF Samsung | C_0805_2012Metric | C6, C7, C9, C28 |
| 1 | GRM1555C1H102JA01D 1nF Murata | C_0402_1005Metric | C24 |
| 1 | CL10A225KO8NNNC 2.2uF Samsung | C_0603_1608Metric | C26 |
| 1 | 0402WGF2201TCE 2.2kΩ UNI-ROYAL | R_0402_1005Metric | R1 |
| 4 | 0402WGF1002TCE 10kΩ UNI-ROYAL | R_0402_1005Metric | R2, R20, R21, R27 |
| 1 | RT0402BRD0747KL 47kΩ Yageo | R_0402_1005Metric | R5 |
| 1 | RT0402BRD0710KL 10kΩ Yageo | R_0402_1005Metric | R6 |
| 3 | 0402WGF1003TCE 100kΩ UNI-ROYAL | R_0402_1005Metric | R7, R25, R28 |
| 2 | 0402WGF5101TCE 5.1kΩ UNI-ROYAL | R_0402_1005Metric | R8, R9 |
| 4 | 0402WGF1001TCE 1kΩ UNI-ROYAL | R_0402_1005Metric | R10, R11, R12, R13 |
| 1 | 0402WGF4322TCE 43.2kΩ UNI-ROYAL | R_0402_1005Metric | R26 |
| 1 | 0402WGF3302TCE 33kΩ UNI-ROYAL | R_0402_1005Metric | R29 |
12vhpwr standard module design files
The KiCad project lives in the nathanfraske/CEC-Platform repository on GitHub; these links point at the commit this page was built from.
12vhpwr standard module: common questions
What microcontroller does the 12vhpwr standard module use?
The 12vhpwr standard module is built around the ESP32-S3-MINI-1-N4R2, from the ESP32 family.
How big is the 12vhpwr standard module?
The 12vhpwr standard module measures 58 × 80 mm, has 4 copper layers and is 1.695 mm thick.
How many components are on the 12vhpwr standard module?
90 components, from 35 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 12vhpwr standard module design files?
From the nathanfraske/CEC-Platform 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 12vhpwr standard module design in my own project?
Yes, under the terms of its Apache-2.0 license, which nathanfraske chose for the repository.
Can I test firmware for the 12vhpwr standard module without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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