Board C — Cellular Isolation
About the Board C — Cellular Isolation
Board C — Cellular Isolation is an open source PCB design by Alfredapp-hash, published on GitHub. It is a 6-layer board measuring 36 × 60 mm, with 9 components from 9 distinct parts.
Other key parts include the FE990D50-NA, USB31_DATA_SW and eSIM_MFF2_ST4SIM_200M. By type, the board carries 6 connectors and 3 ICs.
From the project
# Arkhe Relay One — Bench-Alpha Multi-Board Schematic Set
# Arkhe Relay One — Bench-Alpha Multi-Board Schematic Set
This directory contains the revised bench-alpha KiCad schematic sources for the Arkhe Relay One secure mobile-telephone reference platform.
Track schematic → prototype progress in checklist.md (repo structure, symbol audit, ERC, power, RF, BOM, layout, firmware, bring-up).
- erc-audit.md — ERC pre-fix audit (expected errors/warnings, per-board checks, net classes, run order); read before first formal ERC - footprint-assignment-a-b.md — Board A/B schematic→PCB footprint assignment + Update PCB workflow - footprint-assignment-f.md —…
Main components on the Board C — Cellular Isolation
Board C — Cellular Isolation bill of materials (BOM)
9 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | FE990D50-NA Telit | M2_3042_KEYB_TELIT_FE990D50 | U1 |
| 1 | USB31_DATA_SW | QFN24_4x4_EP | U2 |
| 1 | STMicroelectronics ST4SIM-200M / ST4SI2M0020TPIFW eSIM_MFF2_ST4SIM_200M | MFF2_5x6 | U3 |
| 1 | NANO_SIM | Nano_SIM_6P | J1 |
| 1 | To_Board_A | B2B_0.5mm_40P | J2 |
| 1 | To_Board_B_Guardian | B2B_0.5mm_40P | J3 |
| 1 | CELL_MAIN_ANT | UFL_Rosenberger | J4 |
| 1 | CELL_DIV_ANT | UFL_Rosenberger | J5 |
| 1 | GNSS_ANT | UFL_Rosenberger | J6 |
Board C — Cellular Isolation design files
The KiCad project lives in the Alfredapp-hash/Guardian_One repository on GitHub; these links point at the commit this page was built from.
Board C — Cellular Isolation: common questions
How big is the Board C — Cellular Isolation?
The Board C — Cellular Isolation measures 36 × 60 mm, has 6 copper layers and is 1 mm thick.
How many components are on the Board C — Cellular Isolation?
9 components, from 9 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 Board C — Cellular Isolation design files?
From the Alfredapp-hash/Guardian_One 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 Board C — Cellular Isolation design in my own project?
The repository has no license, so all rights stay with Alfredapp-hash. Use it as a reference, and ask the author before reusing the design.
More boards in Guardian_One
STM32Board B — Guardian / Keyboard / Privacy
60 × 118 mm22 parts6LNo license0
Board F — Front Panel / Keyboard
76 × 46 mm16 parts4LNo license0
Board A — Compute Development Kit
60 × 118 mm11 parts8LNo license0
Board D — Mesh / LoRa / Wi-Fi / BT
34 × 60 mm8 parts6LNo license0
Board G — Battery / Power Entry
68 × 40 mm6 parts4LNo license0
Board E — Camera / Microphone
25 × 35 mm5 parts4LNo license0