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Product

Aerospace & Avionics Data Bus & RF CablesAEEC ARINC 429 (DITS)78 Ω ± 5 Ω Twinax-55 to +200 °C FAR 25.853

ARINC 429 Avionics Shielded Twisted-Pair Data Bus CableAEEC ARINC 429 / MIL-DTL-27500 · 78 Ω ± 5 Ω · 20–26 AWG · SPC/SCCS · Fluoropolymer ·

ARINC 429 Avionics Shielded Twisted-Pair Data Bus Cable is a 78 Ω ± 5 Ω aerospace twinax interconnect engineered to AEEC ARINC Specification 429 (Mark 33 Digital Information Transfer System / DITS) and MIL-DTL-27500. Operating from -55 °C to +200 °C, it

EMC screen
Low-EMC design
Flame-retardant
Approved
Order designation
ARINC 429 1×2×24 AWG Low-Cap Foam FEP
Outer Ø ≈
2.85 mm
Metal weight
9.8 kg/km
Total weight ≈
16.5 kg/km
Min. bend R (fixed)
14 mm
All sizes (4)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Impedance Z₀
78 Ω ± 5 Ω
ARINC 429 / MIL-STD-1553B twinax
Conductor size
20, 22, 24, 26
19-strand SPC or high-tensile alloy
Mutual cap.
≤ 59–98 pF/m
Meets ARINC 429 ≤ 30 pF/ft limit
Data rate
12.5 & 100 kbps
Bipolar RZ + 1 MHz MIL-STD-1553B
Temp. rating
-55 to +200 °C
FEP, ETFE or sintered PTFE jacket
Flammability
FAR 25.853
Low smoke, zero halogen toxicity

Typical values for this cable type, based on AEEC ARINC 429 / MIL-DTL-27500 / M17/176 — confirmed in the datasheet and quotation for your order.

Application fit

Is ARINC 429 right for your machine?

Primary avionics data bus linking flight management systems (FMS), air data inertial reference units (ADIRU), autopilot flight control computers, VHF/HF nav-comm radios, and cockpit EFIS displays

Switchgear & control cabinet wiring

Suitable

Compact 2.6–3.8 mm outer diameter routes densely inside ARINC 600 avionics racks and D38999 circular connectors.

Fixed installation

Suitable

UV-laser-markable ETFE/FEP jacket resists Skydrol hydraulic fluid, Jet-A fuel, and airframe vibration.

Furnace, kiln & high-temp zone

Suitable

Fluoropolymer construction operates continuously from -55 °C at high altitude to +200 °C near engine bays.

Energy chain / drag chain

Not suitable

Airframe twinax is designed for static harness bundles, not industrial drag chains.

S 369 C TP
Typical machinesCommercial Airliner Avionics (FMS / EFIS)Air Data & Inertial Reference (ADIRU)Military Transport & Rotorcraft BusesBusiness Jet & eVTOL Flight ControlsAvionics SIL Integration Test Benches

Construction

Layer by layer

2 × 19-strand (20, 22, 24, or 26 AWG) silver-plated copper or silver-plated high-strength copper alloy conductors (blue & white), solid or

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
119-strand SPC or Ag-Cu alloy twinax pair2 × 20, 22, 24, or 26 AWG (19-strand) silver-plated copper (ASTM B298) or high-strengthAS22759 / ARINC 429
2Low-loss fluoropolymer pair insulationExtruded solid or cellular FEP / PTFE / crosslinked ETFE (Blue & White cores), mutualARINC 429 Pt 1
3100 % foil screen + high-temp binderAluminised polyimide or fluoropolymer tape providing 100 % high-frequency HIRF MIL-DTL-27500
4Silver-plated copper wire braid shield38 AWG silver-plated copper braid (≥ 90 % coverage; double braid option for severe HIRFMIL-DTL-27500
5UV-laser-markable ETFE / FEP / PTFEWhite (or colour-coded) crosslinked ETFE (+150/+200 °C), FEP (+200 °C), or sintered PTFEFAR 25.853 / ABD0031

ARINC 429 24 AWG Lightweight Foam-FEP (Ø 2.85 mm)

Airframe weight-saving 24 AWG high-strength alloy twinax with 59 pF/m capacitance and laser-markable jacket.

ARINC 429 22 AWG Standard Twinax (Ø 3.25 mm)

Workhorse 22 AWG (19×34 SPC) 78 Ω twinax compatible with standard M39029 Size 8 twinax/coax contacts.

ARINC 429 / MIL-STD-1553B Dual-Qualified (M17/176-00002)

+200 °C PFA/PTFE 78 Ω twinax qualified for both 100 kbps ARINC 429 and 1 Mbps MIL-STD-1553B buses.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on AEEC ARINC 429 / MIL-DTL-27500 / M17/176. Values for your order are confirmed in the datasheet and quotation.

Electrical

Characteristic impedance Z₀
78 Ω ± 5 Ω (at 1 MHz)
Mutual pair capacitance
59.0 pF/m (Foam FEP) to 85.0 pF/m (Solid)
Velocity of propagation (VoP)
69 % (Solid PTFE/FEP) to 78 % (Foam FEP)
Conductor DC resistance (22 / 24
≤ 49.5 Ω/km / ≤ 84.0 Ω/km at 20 °C
Max. operating voltage
600 V rms
Dielectric withstand test
1,500 V rms at 60 Hz

Thermal

Operating temperature range
-55 °C to +200 °C (+150 °C on XL-ETFE)
PTFE variant temperature
-65 °C to +260 °C
Flammability & smoke rating
FAA FAR 25.853 & Airbus ABD0031 / Boeing
Thermal shock endurance
-55 °C to +200 °C per MIL-DTL-27500
Cold-bend temperature
-55 °C without cracking
UV laser markability
High-contrast Nd:YAG / UV laser printable

Mechanical

Conductor gauges available
20, 22, 24, and 26 AWG (19-strand)
Outer jacket diameter (24 / 22 AWG)
2.85 mm (0.112 in) / 3.25 mm (0.128 in)
Min. bend radius (fixed / harness)
15 mm (5×D) / 30 mm (10×D)
Nominal weight (24 / 22 AWG)
16.5 kg/km / 23.8 kg/km
Contact compatibility
MIL-DTL-38999 Size 8 & ARINC 600 twinax
Pair twist lay length
25 to 38 mm balanced tight twist

Resistance

Aviation fluids & Skydrol
100 % resistant to Skydrol LD-4, Jet-A &
HIRF & lightning indirect effects
Foil + ≥ 90 % SPC braid (or dual braid)
Wet arc-tracking resistance
Passes SAE AS4373 arc-track test
Fungus & altitude humidity
Non-nutrient fluoropolymer per MIL-STD-810
Abrasion & scrape resistance
Tough crosslinked ETFE or PTFE jacket
RoHS / REACH status
Aerospace RoHS compliant

Reference standards

Avionics data bus standard
AEEC ARINC Specification 429 Part 1
Military harness standard
MIL-DTL-27500 & SAE AS22759
Military twinax specification
MIL-DTL-17/176-00002 (M17/176)
Airframe fire & toxicity norm
FAA FAR 25.853, ABD0031, BSS 7230
Aerospace wire test standard
SAE AS4373 / EN 3475
Quality certification
EN 10204 3.1 + 100 % TDR & spark test

Identification

Insulated core colours
Blue & White (ARINC 429 standard)
Outer jacket colour
White (laser-markable), Blue, or
Surface legend
TEBAOFLEX ARINC 429 78 OHM [AWG] 200C
Standard spool lengths
152 m (500 ft), 305 m (1000 ft), 500 m
Bus designation
ARINC 429 DITS 78 Ω Twinax
Batch traceability
Aerospace lot number & conformity cert

Sizes

4 standard configurations (ARINC 429)

Dimensional, physical and high-frequency electrical parameters for ARINC 429 per AEEC ARINC 429 / MIL-DTL-27500 / M17/176.

Dimensions & construction
Order designationConstruction / VariantConductorOuter Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard ARINC 429 variants
ARINC 429 1×2×24 AWG Low-Cap Foam FEP78 Ω Pair + Foil + 90% SPC Braid24 AWG (19×36 Alloy)2.859.816.514
ARINC 429 1×2×22 AWG Standard FEP/ETFE78 Ω Pair + Foil + 90% SPC Braid22 AWG (19×34 SPC)3.2514.523.816
ARINC 429 1×2×20 AWG Long-Run Twinax78 Ω Pair + Foil + 90% SPC Braid20 AWG (19×32 SPC)3.8521.033.519
M17/176-00002 (1553B / ARINC 429 +200 °C)78 Ω Pair + SPC Braid (PFA)24 AWG (19×36 Alloy)3.2811.222.316
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are nominal production values subject to manufacturing tolerances per AEEC ARINC 429 / MIL-DTL-27500 / M17/176.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
100 % TDR characteristic impedance & capacitance78 Ω ± 5 Ω; mutual capacitance ≤ 98 pF/m (≤ 30 pF/ft)Every spool
1.5 kV rms AC dielectric & 3.0 kV spark testZero breakdown core-to-core and core-to-shield100 % of length
Sample tests
UV laser contrast & Skydrol fluid immersion ≥ 85 % contrast ratio; zero jacket swelling in Skydrol LD-4Per batch
FAR 25.853 vertical burn, smoke & toxicityPasses 60-second vertical bunsen burn and ABD0031 toxicityQualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

AEEC ARINC 429 Part 1MIL-DTL-27500 / M17/176FAA FAR 25.853 / ABD0031

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX ARINC 429 78 OHM [22/24AWG]
Delivery form
Spools, reels or export wooden drums
Standard reel lengths
100 m · 305 m (1000 ft) · 500 m · 1000 m
MOQ
100 m (stock) · 305–500 m (production)
Lead time
1–3 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFARINC 429 Avionics Shielded Twisted-Pair Data Bus Cable – technical datasheet4 sizes · construction, technical data, approvalsXLSXARINC 429 spec data (Excel)All 4 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why does ARINC 429 specify a 78 Ω ± 5 Ω shielded twisted pair with ≤ 30 pF/ft (98 pF/m) capacitance?
An ARINC 429 transmitter drives up to 20 parallel avionics receivers over a unidirectional bipolar return-to-zero (RZ) bus at 12.5 kbps or 100 kbps; maintaining a controlled 78 Ω ± 5 Ω impedance and low pair capacitance (59–82 pF/m) prevents signal overshoot, ringing, and trapezoidal edge degradation across long airframe harnesses.
Can this 78 Ω ARINC 429 twinax cable also be used for MIL-STD-1553B data buses?
Yes—MIL-STD-1553B (M17/176-00002) also specifies a 78 Ω ± 5 Ω shielded twisted pair with ≤ 98.4 pF/m (30 pF/ft) capacitance at 1 MHz, so our 78 Ω twinax is dual-qualified for both ARINC 429 and MIL-STD-1553B systems. Each production reel undergoes sweep-frequency impedance and return-loss verification, dielectric spark testing, and dimensional inspection before dispatch with an EN 10204 3.1 test certificate.
How do I choose between 20, 22, 24, and 26 AWG conductor gauges?
Choose 24 AWG or 26 AWG high-strength copper-alloy twinax to save airframe weight and fit high-density ARINC 600 / D38999 contacts on standard runs; choose 22 AWG or 20 AWG when terminating into legacy Size 8 twinax contacts or over long aft-to-cockpit runs. Each production reel undergoes sweep-frequency impedance and return-loss verification, dielectric spark testing, and dimensional inspection before dispatch with an EN 10204 3.1 test certificate.
Is the outer jacket compatible with automated UV laser wire markers?
Yes, our white TiO₂-pigmented ETFE, FEP, and sintered PTFE outer jackets are formulated for high-contrast, non-damaging UV (355 nm) laser wire identification per SAE AS5649. Each production reel undergoes sweep-frequency impedance and return-loss verification, dielectric spark testing, and dimensional inspection before dispatch with an EN 10204 3.1 test certificate.

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ARINC 429 Avionics Shielded Twisted-Pair Data Bus Cable

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