Garmin Gigaflight Can Bus Cable 120 Ohm 24 Awg

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The GF120-24CANB is an Aerospace grade CAN Bus approved by Garmin for use with Garmin's CAN Bus System architecture.

CAN Bus is designed to be a 120 ohm Twinax, which means the insulation thickness is increased to achieve 120 ohms between the conductors. The increased thickness creates an issue with contact extraction because the insulation OD is larger than the contact.
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  • With GigaFlight's CAN Bus, we have solved this issue by utilizing a duel wall insulation design. The first layer of insulation is a thinner wall high temp PFA with a finished diameter less than the contact OD.
  • The second layer of insulation is a foamed FEP that provides the separation between the wires to maintain a 120 ohms-controlled impedance throughout.
  • A section if the foamed insulation is removed in the termination process to provide access for contact removal.
  • An added benefit of a dual wall construction is that the solid insulation eliminates insulation creep back, a common issue with an all foam insulation design.
  • The silver-plated enhanced insertion loss and improves solder flow over tin-plated braid alternatives.


Outer Diameter 0.142"
Weight 17.5 lbs per 1000 ft
Operating Temperature -55C to -200C
Minimum Bend Radius 0.76"
Impedance 120
Capacitance 11.5pF per Ft
Velocity of Propagation 75%
DC Resistance 28.1/1000ft max
Shield DCR 13.3/1000 ft
Dielectric Voltage Rating 1.5 KV RMS

Cable Construction

1 Conductors 24 AWG Silver-plated Copper Alloy
2 Inner Insulation Solid Fluropolymer
3 Outer Insulation Foamed Fluropolymer
4 Color Code Blue, White
5 Filler FEP
6 Binder PTFE Tape
7 Shield SPC Woven Strip, 92% Min Coverage
8 Jacket White, laser-markable, Tefzel
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Worked well for my Garmin G-5 install.

Aaron B Verified Purchase


April 10, 2024


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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