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Product

industrial data rf cable seriesEN 4604 / FAR 25.86950 Ω · 83% VoP · ≥95 dB-65 °C to +200 °C

BCB029 Double-Screened Aerospace RF Coaxial Cable50 Ω low-attenuation double-screened ePTFE aerospace RF coaxial cable (DC–18 GHz)

50 Ω double-screened aerospace RF coaxial cable per EN 4604 / MIL-DTL-17 with a silver-plated copper core, low-loss PTFE/ePTFE dielectric (70–80 % VoP), dual silver-plated braids (> 90 dB screening), and FEP/ETFE jacket for radar up to 18 GHz and +200 °C.

Low-EMC design
EMC screen
Flame-retardant
Ozone, UV & moisture
Order designation
BCB029
Outer Ø ≈
5.20 mm
Wall thickness
0.42 mm
Total weight ≈
56.0 kg/km
Min. bend R (fixed)
26 mm
All sizes (8)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Impedance
50 Ω ± 2 Ω
DC to 18 GHz low-loss trunk
Velocity (VoP)
83 %
Capacitance 64.2 pF/m nominal
Attenuation
14.2 dB/100m
At 1 GHz · 64.5 dB/100m @ 18 GHz
Shielding
≥ 95 dB
Ag-Cu flat tape + Ag-Cu braid
Temperature
-65…+200 °C
FEP / ETFE fluoropolymer jacket
Min bend radius
5 × OD fixed
10 × OD dynamic routing

Typical values for this cable type, based on EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax) — confirmed in the datasheet and quotation for your order.

Application fit

Is BCB029 right for your machine?

Deploy BCB029 for long-distance fuselage antenna feeders, Ka/Ku-band satcom transceivers, radar altimeters, and airborne ECM pods where insertion loss must stay minimal.

Fixed installation

Suitable

Larger Ø 1.42 mm silver-plated copper center conductor cuts 1–18 GHz attenuation by ~33 % compared with BCB012 over long fuselage runs.

Switchgear & control cabinet wiring

Suitable

Flexible 5.20 mm outer diameter and 26 mm static bend radius allow clean routing through airframe stringers and pressure bulkheads.

VFD inverter to AC motor screened feeder

Suitable

Composite silver-plated copper flat strip + high-density round wire braid provides ≥ 95 dB EMI isolation next to 400 Hz aircraft feeders.

Motorised monospiral reel

Not suitable

Designed for fixed airframe and missile harness installations rather than continuous reeling service.

Use LMR-400 Flexible Coax
Typical machinesCommercial Airliner Satcom & RadarMilitary EW & Reconnaissance PodsHelicopter & UAV DatalinksSpace Launch Vehicle TelemetryGround Defense Radar Shelters

Construction

Layer by layer

Low-loss 50 Ω aerospace coax: Ø 1.42 mm silver-plated copper conductor, expanded PTFE core, helically lapped Ag-Cu flat tape + Ag-Cu round braid, and FEP outer sheath.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Silver-plated copper center conductorASTM B298 solid or 19-strand silver-plated high-conductivity copper (Ø 1.42 mm)Low RF surface resistance for long fuselage antenna runs up to 18 GHz
2Expanded microporous PTFE (ePTFE) dielectricLow-density tape-wrapped expanded PTFE (Ø 3.95 mm, 83 % VoP, 64.2 pF/m)Ultra-low dielectric loss tangent across -65 °C to +200 °C
3Inner silver-plated copper flat-ribbon screenHelically wrapped silver-plated copper flat tape (100 % coverage)Eliminates braid-window RF leakage at X- and Ku-band frequencies
4Outer silver-plated copper round wire braidASTM B298 silver-plated copper braid (≥ 93 % optical coverage)Delivers ≥ 95 dB composite shielding and low connector termination resistance
5Fluoropolymer (FEP / ETFE) outer sheathExtruded FEP or ETFE fluoropolymer jacket (FAR 25.869 / ABD0031 compliant)Impervious to Skydrol hydraulic fluid, jet fuel, solvent washdown, and UV

BCB029 Standard (FEP)

Ø 5.20 mm low-loss ePTFE aerospace coax with FEP jacket (-65 to +200 °C)

BCB029-ETFE

Abrasion-resistant ETFE outer jacket for exposed landing-gear & pylon harnesses

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax). Values for your order are confirmed in the datasheet and quotation.

Electrical

Characteristic impedance
50 Ω ± 2 Ω
Operating frequency
DC to 18 GHz
Velocity of propagation
83 % nominal (64.2 pF/m)
Attenuation @ 1 / 6 / 18 GHz
14.2 / 36.0 / 64.5 dB/100m
Shielding effectiveness
≥ 95 dB (DC to 18 GHz)

Thermal

Operating temperature
-65 °C to +200 °C
Peak RF power @ 1 GHz
1.1 kW CW average at +40 °C
Max. operating voltage
1,500 V RMS at sea level

Mechanical

Center conductor Ø
1.42 mm (solid or 19×0.29 mm SPC)
Overall cable diameter
5.20 mm ± 0.12 mm nominal
Min. bending radius
5 × OD (26 mm) static · 10 × OD dynamic

Resistance

Flammability & smoke
FAR 25.869 / ABD0031 / EN 3475 pass
Chemical & fluid resistance
Skydrol, Jet-A1, hydraulic oils, de-icing fluids
Radiation & altitude
70,000 ft decompression & UV resistant

Reference standards

Design reference
EN 4604 / SAE AS22759 / MIL-DTL-17
Coaxial RF testing
IEC 61196-1 & EN 3475 test schedule
RoHS & REACH
RoHS 3 & REACH SVHC compliant

Identification

Outer sheath colour
Translucent blue or white (laser markable)
Surface legend
TEBAOFLEX BCB029 50 OHM LOW-LOSS AEROSPACE COAX
Customs tariff (HS)
8544.20

Sizes

8 standard configurations (BCB029)

Engineering dimensions, impedance, propagation velocity, and electrical ratings for BCB029 per EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax).

Dimensions & weights
Order designationImpedance / sizeConductor & dielectricWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard BCB029 configurations
BCB02950 Ω · Ø 1.42 mmSPC 19×0.29 + ePTFE0.425.2038.056.026
BCB029-S50 Ω · Ø 1.40 mmSolid SPC + ePTFE0.425.1537.554.526
BCB029-ETFE50 Ω · Ø 1.42 mmSPC 19×0.29 + ePTFE/ETFE0.455.3038.057.527
BCB029-PFA50 Ω · Ø 1.42 mmSPC 19×0.29 + ePTFE/PFA0.455.3038.058.527
BCB029-L50 Ω · Ø 1.80 mmSPC 19×0.36 + ePTFE0.506.4056.082.032
BCB029-XL50 Ω · Ø 2.25 mmSPC 37×0.32 + ePTFE0.557.8084.0122.039
BCB029-TR50 Ω · TriaxialSPC + ePTFE + Dual Braid0.506.1052.076.031
BCB029-SS50 Ω · SS BraidSPC + ePTFE + SS304 Outer0.505.8549.074.030
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for BCB029 subject to standard manufacturing tolerances per EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax).

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
Characteristic impedance, return loss (VSWR) & TDR sweep100 % frequency-domain return loss and TDR impedance verification per EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax)Every manufactured length
Dielectric spark & high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax)Every spool or drum length
Sample tests
Insertion loss (attenuation), velocity & capacitance checkAttenuation (dB/100m), VoP (%), and capacitance within EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax) limitsPer production batch
Screening attenuation, transfer impedance & environmental qualificationQualified to EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax) EMC shielding, thermal, and flame/fluid criteriaType qualification

Inspection certificate

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

Product approvals

EN 4604 / SAE AS22759 / FAR 25.869 (Low-Loss 50 Ω Aerospace Coax)CE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC Compliance Verified

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BCB029 50 OHM DOUBLE-SCREENED AEROSPACE RF COAX
Delivery form
Export wooden drums, flange reels or precision coils
Standard lengths
100 m · 305 m · 500 m · 1000 m (or custom cut lengths)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFBCB029 Double-Screened Aerospace RF Coaxial Cable – technical datasheet8 sizes · construction, technical data, approvalsXLSXBCB029 spec data (Excel)All 8 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.

How much RF insertion loss does BCB029 save compared to BCB012?
Thanks to its larger Ø 1.42 mm silver-plated copper center conductor and Ø 3.95 mm expanded PTFE dielectric, BCB029 reduces attenuation to ~14.2 dB/100m at 1 GHz and ~64.5 dB/100m at 18 GHz—roughly 33 % lower loss than BCB012.
What connectors are compatible with BCB029?
BCB029 terminates with standard aerospace SMA, TNC, Type N, BNC, and ARINC 600 size 8/12 RF contacts designed for 5.2 mm ePTFE double-screened cables.
Why is a flat silver-plated copper ribbon used under the round wire braid?
A helically wrapped flat copper-silver strip acts as a flexible solid tube with 100 % optical coverage, preventing high-frequency energy leakage above 6 GHz where conventional woven wire braids suffer aperture loss.
Does BCB029 withstand aircraft hydraulic fluids and laser wire marking?
Yes. Both FEP and ETFE jacket options resist Skydrol, Jet-A1, and de-icing fluids per EN 3475 and accept UV laser identification marking without degrading dielectric strength.

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BCB029 Double-Screened Aerospace RF Coaxial Cable

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Reel & motion:
- Reel type: 
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