FVC
About the FVC PCB
FVC is an open source PCB design by QSUM-UNB, published on GitHub. It is a 4-layer board measuring 30 × 30 mm, with 28 components from 20 distinct parts.
Other key parts include the AD650 and REF02HSA+. By type, the board carries 11 capacitors, 9 resistors, 3 connectors, 2 ICs, 2 inductors and 1 diode.
From the project
PCB designs for a standalone optical frequency-offset locking system.
- © 2026 by K. Shalaby, P. Trottier, T. Reuschel, and B. Barrett - PCB designs licensed under CC BY-NC-SA 4.0
- This repository contains the PCB designs for a standalone optical frequency-offset locking system. All PCB designs were developed in KiCAD. - Files for each circuit component (or tile) are organized into the directory structure described below. - Details about the locking system and its performance can be found in our publication: - K. Shalaby et al, Standalone optical frequency-offset locking electronics for atomic physics, Rev. Sci. Instrum. 97, 033004 (2026). Pre-print…
Main components on the FVC
FVC bill of materials (BOM)
28 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AD650 | Ad650 | IC1 |
| 1 | REF02HSA+ | SO-8_3.9x4.9mm_P1.27mm | IC2 |
| 2 | 142-1701-626 | SMA-Edge-Generic | J1, J2 |
| 1 | Input Power | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J3 |
| 1 | LS4148L1G LS4148L1GCT-ND | D_SOD-123 | D1 |
| 2 | MMZ2012Y202BTD25 | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1, FB2 |
| 2 | 1UF 1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C9 |
| 3 | 100NF 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C10, C11 |
| 1 | 1NF 1nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 100PF 100pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 100 nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 1 | 500PF 500pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 2 | 1UF 1uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C12, C13 |
| 2 | 250K 250k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R10 |
| 1 | 10K 10k | Potentiometer_Bourns_3266Y_Vertical | R6 |
| 1 | 10K 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 3.6K 3.6k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | 20K 20k | Potentiometer_Bourns_3266Y_Vertical | R9 |
| 1 | 2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 2 | 500 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R13 |
FVC design files
The KiCad project lives in the QSUM-UNB/Frequency-Offset-Lock repository on GitHub; these links point at the commit this page was built from.
FVC: common questions
How big is the FVC PCB?
The FVC measures 30 × 30 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the FVC?
28 components, from 20 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 FVC design files?
From the QSUM-UNB/Frequency-Offset-Lock 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 FVC design in my own project?
The repository has no license, so all rights stay with QSUM-UNB. Use it as a reference, and ask the author before reusing the design.
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