CEC PCIe 8-pin 3-Port Module
About the CEC PCIe 8-pin 3-Port Module
CEC PCIe 8-pin 3-Port 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 103.4 × 56 mm, with 54 components from 27 distinct parts.
Its main chip is the ESP32-C6-MINI-1-N4, from the ESP32 family. Other key parts include the TJA1051T/3/1J, LP5907MFX-3.3/NOPB, INA238AIDGSR, INA181A2IDBVR and TLV7011DBVR. By type, the board carries 19 capacitors, 12 ICs, 8 resistors, 2 connectors, 2 switches and 2 diodes.
It belongs with the usb & debug tools designs in this gallery.
From the project
Standard-tier per-cable sensing module for the PCIe 8-pin (PCIe/GPU) power connector. 3-port SKU: 3 cables → 6 connectors (the spec upper bound). The 2-port variant is a separate board in ../pcie-8pin-2port. BOM target ~$42 (100-qty). See spec §6.2.
Standard-tier per-cable sensing module for the PCIe 8-pin (PCIe/GPU) power connector. 3-port SKU: 3 cables → 6 connectors (the spec upper bound). The 2-port variant is a separate board in ../pcie-8pin-2port. BOM target ~$42 (100-qty). See spec §6.2.
- OQ-9 (RESOLVED, v3.10 §6.13): PCIe transient capture is the analog DETECTION ladder above — Standard sees that a transient happened (binary, into FREEZE); magnitude/shape are held to the PCIe Pro/Max SKUs. (OQ-57..59 gate the details.) - OQ-10 / OQ-12: bundled-shunt vertical transition + high-current stackup for the ~40–55 A/cable shunt sites…
Main components on the CEC PCIe 8-pin 3-Port Module
CEC PCIe 8-pin 3-Port Module bill of materials (BOM)
54 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-C6-MINI-1-N4 Espressif Systems | ESP32-C6-MINI-1 | U1 |
| 1 | TJA1051T/3/1J TJA1051T/3 NXP Semiconductors | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LP5907MFX-3.3/NOPB LP5907MFX-3.3 Texas Instruments | SOT-23-5 | U3 |
| 3 | INA238AIDGSR INA238 Texas Instruments | VSSOP-10_3x3mm_P0.5mm | U10, U11, U12 |
| 3 | INA181A2IDBVR Texas Instruments | SOT-23-6 | U20, U21, U22 |
| 3 | TLV7011DBVR Texas Instruments | SOT-23-5 | U30, U31, U32 |
| 1 | KH-RJ45-58-8P8C TO-HUB Kinghelm | RJ45_FTP_Shielded_Horizontal | J1 |
| 1 | U262-161N-4BVC11 USB-C 2.0 XKB Connection | USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J5 |
| 1 | 45586-0005 C1 PSU Molex | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_IN1 |
| 1 | 45586-0005 C2 PSU Molex | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_IN2 |
| 1 | 45586-0005 C3 PSU Molex | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_IN3 |
| 1 | C1 LOAD | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_OUT1 |
| 1 | C2 LOAD | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_OUT2 |
| 1 | C3 LOAD | Molex_Mini-Fit_Jr_45586_2x04_P4.20mm_Horizontal | J_OUT3 |
| 3 | CSS2H-2512R-L500F 0.5mΩ Bourns | R_2512_6332Metric | RS1, RS2, RS3 |
| 1 | TS-1088-AR02016 BOOT XUNPU | TS-1088-AR02016 | SW1 |
| 1 | TS-1088-AR02016 RESET XUNPU | TS-1088-AR02016 | SW2 |
| 1 | PESD5V0S1BA HXY MOSFET | D_SOD-323 | D1 |
| 1 | SS34 | D_SMA | D2 |
| 2 | CL10A105KB8NNNC 1uF Samsung | C_0603_1608Metric | C1, C2 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 14 | CL05B104KO5NNNC 100nF Samsung | C_0402_1005Metric | C3, C4, C5, C8, C10, C11, C12, C20 +6 |
| 2 | CL21A106KAYNNNE 10uF Samsung | C_0805_2012Metric | C6, C9 |
| 1 | CL21A475KAQNNNE 10uF Samsung | C_0805_2012Metric | C7 |
| 3 | 0402WGF2201TCE 2.2kΩ UNI-ROYAL | R_0402_1005Metric | R1, R3, R4 |
| 2 | 0402WGF1002TCE 10kΩ UNI-ROYAL | R_0402_1005Metric | R2, R10 |
| 1 | 0402WGF1003TCE 100kΩ UNI-ROYAL | R_0402_1005Metric | R7 |
| 2 | 0402WGF5101TCE 5.1kΩ UNI-ROYAL | R_0402_1005Metric | R8, R9 |
CEC PCIe 8-pin 3-Port 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.
CEC PCIe 8-pin 3-Port Module: common questions
What microcontroller does the CEC PCIe 8-pin 3-Port Module use?
The CEC PCIe 8-pin 3-Port Module is built around the ESP32-C6-MINI-1-N4, from the ESP32 family.
How big is the CEC PCIe 8-pin 3-Port Module?
The CEC PCIe 8-pin 3-Port Module measures 103.4 × 56 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the CEC PCIe 8-pin 3-Port Module?
54 components, from 27 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 CEC PCIe 8-pin 3-Port 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 CEC PCIe 8-pin 3-Port 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 CEC PCIe 8-pin 3-Port 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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