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Product

industrial data rf cable seriesEN 4604 / FAR 25.86950 Ω · DC–18 GHz · 82% VoP-65 °C to +200 °C

BCB012 High-Frequency Avionics Coaxial Cable50 Ω low-loss ePTFE avionics RF coaxial cable with dual Ag-Cu screen (DC–18 GHz)

50 Ω aerospace RF coaxial cable per EN 4604 / MIL-DTL-17 with a silver-plated copper conductor, low-loss PTFE dielectric (70–76 % VoP), silver-plated copper braid (> 60 dB screening), and FEP/ETFE fluoropolymer jacket for avionics up to 6 GHz and +200 °C.

Low-EMC design
EMC screen
Flame-retardant
Ozone, UV & moisture
Order designation
BCB012
Outer Ø ≈
3.60 mm
Wall thickness
0.35 mm
Total weight ≈
29.0 kg/km
Min. bend R (fixed)
18 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 microwave band
Velocity (VoP)
82 %
Capacitance 65.0 pF/m nominal
Temperature
-65…+200 °C
FEP / ETFE fluoropolymer jacket
Dielectric
Expanded PTFE
Low-density microporous ePTFE
Shielding
≥ 90 dB
Ag-Cu flat strip + round braid
Min bend radius
5 × OD fixed
10 × OD dynamic installation

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

Application fit

Is BCB012 right for your machine?

Specify BCB012 for compact airborne radar, TCAS, ADS-B transponders, GPS/GNSS antennas, and EW avionics racks requiring low insertion loss up to 18 GHz.

Switchgear & control cabinet wiring

Suitable

Compact 3.6–4.8 mm outer diameter and 5 × OD static bend radius route cleanly inside dense avionics ATR trays and cockpit harnesses.

Fixed installation

Suitable

FEP/ETFE fluoropolymer jacket resists Skydrol hydraulic fluid, Jet-A1 fuel, de-icing glycol, and altitude decompression from -65 to +200 °C.

VFD inverter to AC motor screened feeder

Suitable

Helical silver-plated copper flat-ribbon inner shield plus outer round braid delivers ≥ 90 dB screening against airborne radar and HF EMI.

Motorised monospiral reel

Not suitable

Microporous ePTFE dielectric is engineered for fixed airframe harnessing, not continuous industrial reeling drums.

Use ETHERLINE ROBUST FR
Typical machinesCommercial & Military AvionicsAirborne Weather & AESA RadarTCAS, DME & ADS-B TranspondersUAV & Satellite Payload LinksFlight-Test Telemetry

Construction

Layer by layer

Concentric 50 Ω avionics build: solid/stranded silver-plated copper center, microporous ePTFE core, silver-plated copper flat tape + round wire braid, and FEP/ETFE jacket.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Silver-plated copper center conductorASTM B298 solid or 19-strand silver-plated annealed high-conductivity copper (SPC)Minimises skin-effect RF conductor loss through 18 GHz
2Microporous expanded PTFE (ePTFE) dielectricLow-density tape-wrapped/extruded expanded polytetrafluoroethylene (εr ≈ 1.48, 82 % VoP)Delivers ultra-low dielectric tangent loss and phase stability across temperature
3Inner silver-plated copper flat ribbon shieldHelically lapped silver-plated copper flat strip with 100 % optical coverageProvides low contact resistance and high-frequency transfer impedance
4Outer silver-plated copper round wire braidASTM B298 silver-plated copper wire braid (≥ 92 % coverage)Mechanical pull strength and > 90 dB composite RF shielding effectiveness
5Fluoropolymer (FEP / ETFE) outer jacketExtruded fluorinated ethylene propylene (FEP) or ETFE compound (translucent blue/white)Meets FAR 25.869 / ABD0031 vertical burn, smoke, and aircraft fluid resistance

BCB012 Standard (FEP)

FEP fluoropolymer jacket rated -65 °C to +200 °C for pressurized & unpressurized airframe zones

BCB012-LS (ETFE)

Abrasion-hardened ETFE jacket rated -65 °C to +150 °C for tight bulkhead routing

Technical data

Ratings & operating limits

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

Electrical

Characteristic impedance
50 Ω ± 2 Ω
Operating frequency range
DC to 18 GHz
Velocity of propagation
82 % nominal (65.0 pF/m)
Attenuation @ 1 / 6 / 18 GHz
21.5 / 54.0 / 98.0 dB/100m
Shielding effectiveness
≥ 90 dB (up to 18 GHz)

Thermal

Operating temperature range
-65 °C to +200 °C
Thermal phase stability
< 500 ppm (-55 °C to +125 °C)
Max. operating voltage
1,000 V RMS at sea level

Mechanical

Center conductor Ø
0.94 mm (19×0.19 mm or solid SPC)
Overall cable diameter
3.60 mm ± 0.10 mm nominal
Min. bending radius
5 × OD (18 mm) static · 10 × OD dynamic

Resistance

Flammability & smoke
FAR 25.869 / EN 3475 / ABD0031 pass
Aircraft fluid resistance
Resists Skydrol, Jet-A1, MIL-PRF-5606, glycol
Altitude & outgassing
70,000 ft altitude · low vacuum outgassing

Reference standards

Design standards
EN 4604 / SAE AS22759 / MIL-DTL-17
RF test procedure
IEC 61196-1 / MIL-STD-202
RoHS & REACH
RoHS 3 (2015/863/EU) & REACH compliant

Identification

Outer jacket colour
Translucent blue or laser-markable white
Surface marking
TEBAOFLEX BCB012 50 OHM 18GHZ AVIONICS COAX
Customs tariff (HS)
8544.20

Sizes

8 standard configurations (BCB012)

Engineering dimensions, impedance, propagation velocity, and electrical ratings for BCB012 per EN 4604 / SAE AS22759 / FAR 25.869 (50 Ω Avionics RF Coax).

Dimensions & weights
Order designationImpedance / sizeConductor & dielectricWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard BCB012 configurations
BCB01250 Ω · Ø 0.94 mmSPC 19×0.19 + ePTFE0.353.6019.529.018
BCB012-S50 Ω · Ø 0.91 mmSolid SPC + ePTFE0.353.5519.028.018
BCB012-ETFE50 Ω · Ø 0.94 mmSPC 19×0.19 + ePTFE/ETFE0.383.6519.529.518
BCB012-LS50 Ω · Ø 1.02 mmSPC 19×0.20 + ePTFE0.403.8522.033.019
BCB012-PFA50 Ω · Ø 0.94 mmSPC 19×0.19 + ePTFE/PFA0.383.6519.530.218
BCB012-M50 Ω · Ø 0.72 mmSPC 19×0.15 + ePTFE0.302.9513.820.515
BCB012-HD50 Ω · Ø 1.14 mmSPC 19×0.23 + ePTFE0.424.3027.541.022
BCB012-TR50 Ω · TriaxialSPC + ePTFE + Dual Braid0.454.6534.049.024
  • 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 BCB012 subject to standard manufacturing tolerances per EN 4604 / SAE AS22759 / FAR 25.869 (50 Ω Avionics RF 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 (50 Ω Avionics RF 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 (50 Ω Avionics RF 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 (50 Ω Avionics RF Coax) limitsPer production batch
Screening attenuation, transfer impedance & environmental qualificationQualified to EN 4604 / SAE AS22759 / FAR 25.869 (50 Ω Avionics RF 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 (50 Ω Avionics RF 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 BCB012 50 OHM ePTFE AVIONICS COAX FAR 25.869
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

PDFBCB012 High-Frequency Avionics Coaxial Cable – technical datasheet8 sizes · construction, technical data, approvalsXLSXBCB012 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.

Why does BCB012 use expanded PTFE (ePTFE) instead of solid PTFE?
Expanded microporous PTFE lowers the dielectric constant from 2.1 (solid PTFE) to ~1.48, boosting propagation velocity to 82 % and reducing RF attenuation by 25–30 % at 1–18 GHz while eliminating the pronounced 19 °C phase knee of solid PTFE.
How does the dual silver-plated copper shield construction work?
An inner helically wrapped silver-plated copper flat ribbon provides 100 % optical coverage and low high-frequency surface resistance, while the outer silver-plated round wire braid adds mechanical pull strength and ≥ 90 dB screening.
When should I select BCB012 versus BCB029?
Choose BCB012 (Ø 3.60 mm) for tight cabinet jumpers, cockpit harnesses, and medium airframe runs; select BCB029 (Ø 5.0–5.5 mm) when longer fuselage runs require lower dB/100m insertion loss up to 18 GHz.
Is BCB012 qualified for commercial aircraft cabin and cargo zones?
Yes. Its FEP or ETFE fluoropolymer outer jacket passes FAR 25.869 / ABD0031 flammability, smoke density, and toxic gas emission requirements and resists Skydrol and Jet-A1 fluids.

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BCB012 High-Frequency Avionics Coaxial Cable

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