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2 layers40 × 25 mmFIC-100A, the printed circuit board in 3D

USB IR Adapter compatible with Fluke 287 and 289 series multimeters

Size
40 × 25 mm
Copper layers
2
Thickness
1.6 mm
Parts
40
Nets
34
Pads
117
Tracks, vias
167, 70
Pours
72
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
24 Apr 2026
Updated
29 Jul 2026

Overview

FIC-100A is an open-source printed circuit board by Reemuson, from the Reemuson/FIC-100A repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 40 × 25 mm with 40 parts on 34 nets, routed with 167 tracks and 70 vias.

It is built around the FT231XS-U, LM393ADT and USBLC6-2SC6, with the LTST-C170KGKT, T491A475K025AT and PT334-6C among its other parts. Its parts include 12 resistors, 6 capacitors, 5 diodes, 3 ICs and 1 transistor. It belongs with the sensors and measurement and interfaces and adapters boards of this library.

Main components

8

README

README.md

Logo

FIC-100A

CI Badge


3D Top Angled         3D Bottom Angled


SPECIFICATIONS

ParameterValue
Dimensions40.0 × 25.0 mm

PRODUCT IDENTIFICATION

Public model identifier: FIC-100A

Recommended description: USB IR Adapter compatible with selected Fluke multimeters

This project uses a simple function-based product numbering style. FIC identifies the Fluke-compatible infrared cable family, and 100A identifies this product generation.

This project is an independent, third-party design compatible with selected Fluke instruments. It is not made by, endorsed by, sponsored by, or affiliated with Fluke Corporation. Fluke is a trademark of Fluke Corporation.


DIRECTORY STRUCTURE

text
.
├─ Computations       # Misc calculations
├─ HTML               # HTML files for generated webpage
├─ Images             # Pictures and renders
│
├─ kibot_resources    # External resources for KiBot
│  ├─ colors          # Color theme for KiCad
│  ├─ fonts           # Fonts used in the project
│  ├─ scripts         # External scripts used with KiBot
│  └─ templates       # Templates for KiBot generated reports
│
├─ kibot_yaml         # KiBot YAML config files
├─ KiRI               # KiRI (PCB diff viewer) files
│
├─ lib                # KiCad footprint and symbol libraries
│  ├─ 3d_models       # Component 3D models
│  ├─ lib_fp          # Footprint libraries
│  └─ lib_sym         # Symbol libraries
│
├─ Logos              # Logos
│
├─ Manufacturing      # Assembly and fabrication documents
│  ├─ Assembly        # Assembly documents (BoM, pos, notes)
│  │

LEGAL

This repository contains open hardware design files, protected project branding, and third-party workflow content.

  • The primary hardware licence is the CERN Open Hardware Licence Version 2 - Weakly Reciprocal (CERN-OHL-W-2.0). See LICENSE.
  • Project-specific scope notes, branding exclusions, compatibility wording, non-affiliation wording, and safety notes are in NOTICE.md.
  • Third-party copyright and licence notices are preserved in THIRD_PARTY_NOTICES.md.

This project is an independent, third-party design compatible with selected Fluke instruments. It is not made by, endorsed by, sponsored by, or affiliated with Fluke Corporation. Fluke is a trademark of Fluke Corporation.

This is a hardware/electronics project. Anyone building, modifying, testing, selling, or using the design is responsible for verifying isolation, creepage and clearance, electrical safety, regulatory compliance, and fitness for purpose.

Parts

40
QtyValueFootprintReferences
4100nCapacitor_SMD:C_0603_1608MetricC1, C2, C3, C5
4MOUNT_M2.5MountingHole:MountingHole_2.7mm_M2.5_ISO7380_PadH1, H2, H3, H4
34.7kResistor_SMD:R_0603_1608MetricR1, R2, R5
3FIDUCIALFiducial:Fiducial_1mm_Mask2mmFID1, FID2, FID3
3LEDLED_SMD:LED_0805_2012MetricD3, D4, D5
227Resistor_SMD:R_0603_1608MetricR8, R9
2270Resistor_SMD:R_0603_1608MetricR10, R11
25.11kResistor_SMD:R_0603_1608MetricR6, R7
1+3V3RD-Testpoints:TestPoint_Pad_D1.0mmTP2
110kResistor_SMD:R_0603_1608MetricR3
110nCapacitor_SMD:C_0603_1608MetricC4
1220Resistor_SMD:R_0603_1608MetricR4
14.7uCapacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-AC6
1619Resistor_SMD:R_0603_1608MetricR12
1BLM18KG601BH1DInductor_SMD:L_0603_1608MetricFB1
1BOARD_STACKUP_MARKERRD-Symbols-Silkscreen:STACKUP_ID_2L_SMLID1
1FT231XS-UPackage_SO:SSOP-20_3.9x8.7mm_P0.635mmU3
1GNDRD-Testpoints:TestPoint_Pad_1.0x1.0mmTP1
1LM393Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU1
1PT334-6CLED_THT:LED_D5.0mm_ClearQ1
1TSAL6100LED_THT:LED_D5.0mm_IRBlackD2
1TVSDiode_SMD:D_SMBD1
1USB4105-GF-AConnector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_HorizontalJ1
1USBLC6-2SC6Package_TO_SOT_SMD:SOT-23-6U2
1VUSBJumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mmJP1

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Questions

How big is the FIC-100A PCB?

It measures 40 × 25 mm and has 2 copper layers, 1.6 mm thick.

What parts does the FIC-100A use?

40 parts, built around the FT231XS-U, LM393ADT, USBLC6-2SC6 and LTST-C170KGKT. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the FIC-100A KiCad files?

From the Reemuson/FIC-100A repository on GitHub, at the commit this page was made from: the board is FIC-100A.kicad_pcb and its schematic Block Diagram.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the FIC-100A design in my own project?

Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).