Nref ports two
About the Nref ports two PCB
Nref ports two is an open source PCB design by cetola, published on GitHub. It is a 4-layer board measuring 87.5 × 40.2 mm, with 137 components from 37 distinct parts.
Other key parts include the TUSB8041, TMUXHS4212, TPD4E02B04DQA, TPD12S521 and TLV62569DBV. By type, the board carries 61 capacitors, 45 resistors, 18 ICs, 7 connectors, 4 inductors and 1 crystal.
It belongs with the audio and power & battery designs in this gallery.
From the project
The original Open Hardware laptop, reloaded.
The original Open Hardware laptop, reloaded.
MNT Reform Next takes the MNT Reform family's modular approach a few steps further: The motherboard doesn't have any exterior ports, instead it breaks out all important signals in groups to FPC and JST-SH headers. The connectivity to the outside is implemented via user-exchangable Port Boards that increase repairability, customizability and future proofing of interfaces. The motherboard provides the system controller (RP2040 based), main (multi chemistry) LiFePO4/LiIon charger buck/boost controller, main 5V and 3V3 power rails and the SOM…
Main components on the Nref ports two
Nref ports two bill of materials (BOM)
137 components, 37 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TUSB8041 Texas Instruments | QFN-64-1EP_9x9mm_P0.5mm_EP6x6mm_ThermalVias | U1 |
| 2 | TMUXHS4212 Texas Instruments | Texas-VQFN20_2.5x4.5mm_RKS | U2, U17 |
| 8 | TPD4E02B04DQA Texas Instruments | USON-10_2.5x1.0mm_P0.5mm | U3, U4, U5, U6, U7, U8, U9, U10 |
| 1 | TPD12S521 Texas Instruments | TSSOP50P640X120-38N | U11 |
| 2 | TLV62569DBV Texas Instruments | SOT-23-5 | U12, U13 |
| 1 | EQCO5X31C0-I_6NX Microchip | QFN50P400X400X100-21N-D | U14 |
| 1 | LP5907MFX-1.2 Texas Instruments | SOT-23-5 | U15 |
| 2 | TUSB321 Texas Instruments | Texas_X2QFN-12_1.6x1.6mm_P0.4mm | U16, U18 |
| 1 | 24MHz Seiko Epson | Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y1 |
| 2 | USB_C_Receptacle Molex | USB_C_Receptacle_Molex_105450-0101 | J1, J2 |
| 1 | USB3_A Hong Cheng | USB-A-SMD_HC-USB3.0-C225-P | J3 |
| 1 | A71-05H8-111N2 XKB | HDMI-TH_A71-05H8-111N2 | J4 |
| 1 | Conn_01x20 Jushuo | FPC-SMD_AFC07-S20ECC-00 | J5 |
| 2 | Conn_01x12_Pin Hirose | Hirose_FH12-12S-0.5SH_1x12-1MP_P0.50mm_Horizontal | J6, J8 |
| 1 | SD0603S040S0R2 AVX | D_0603_1608Metric | D1 |
| 2 | 100@100MHz 3A FH | L_0402_1005Metric | FB5, FB6 |
| 1 | 3.3uH cijang | L_1210_3225Metric | L1 |
| 1 | 2.2uH cijang | L_1210_3225Metric | L2 |
| 2 | 18pF Yageo | C_0402_1005Metric | C1, C2 |
| 22 | 0.1uF Samsung | C_0402_1005Metric | C3, C4, C5, C6, C7, C8, C9, C10 +14 |
Show 17 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 10uF Samsung | C_0603_1608Metric | C12, C16, C43 |
| 8 | 47uF TDK | C_1206_3216Metric | C19, C20, C25, C26, C31, C32, C40, C42 |
| 18 | 0.22uF Samsung | C_0402_1005Metric | C21, C22, C23, C24, C27, C28, C29, C30 +10 |
| 2 | 22uF Samsung | C_0603_1608Metric | C39, C41 |
| 4 | 1uF Samsung | C_0402_1005Metric | C48, C49, C53, C54 |
| 2 | 4.7uF Samsung | C_0402_1005Metric | C50, C51 |
| 11 | 0 Panasonic | R_0402_1005Metric | R1, R10, R11, R16, R18, R21, R24, R25 +3 |
| 2 | 1M Yageo | R_0402_1005Metric | R2, R3 |
| 1 | 90.9K 1% Bourns | R_0402_1005Metric | R4 |
| 9 | 4.7k Yageo | R_0402_1005Metric | R5, R8, R9, R14, R23, R27, R29, R44 +1 |
| 13 | 10k Yageo | R_0402_1005Metric | R6, R12, R13, R17, R20, R22, R26, R30 +5 |
| 1 | 9.53K 1% Bourns | R_0402_1005Metric | R7 |
| 2 | 909k Uni-Royal | R_0402_1005Metric | R15, R19 |
| 1 | 27k Vishay Dale | R_0402_1005Metric | R28 |
| 3 | 47k Panasonic | R_0402_1005Metric | R32, R33, R34 |
| 1 | 8.25k Yageo | R_0402_1005Metric | R37 |
| 1 | 45.3k Vishay Dale | R_0402_1005Metric | R41 |
Nref ports two design files
The KiCad project lives in the cetola/reform-next-mirror repository on GitHub; these links point at the commit this page was built from.
Nref ports two: common questions
How big is the Nref ports two PCB?
The Nref ports two measures 87.5 × 40.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Nref ports two?
137 components, from 37 distinct parts. The full bill of materials is listed on this page.
Where can I download the Nref ports two design files?
From the cetola/reform-next-mirror repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Nref ports two design in my own project?
The repository has no license, so all rights stay with cetola. Use it as a reference, and ask the author before reusing the design.
More boards in reform-next-mirror
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Nref ports one
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43.5 × 32.5 mm93 parts4LNo license0
Nref batterypack
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Nref usb3-redriver
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Nref wifi m2
66 × 24 mm28 parts4LNo license0
Nref wifi
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Nref batterypack backside
75 × 17 mm3 parts4LNo license0
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