Product Hierarchy
Product Hierarchy

89207 - 100Ω Twinax, #20-1c TC/1c BC, FEP, Duofoil® TC Braid, FEP Jkt, CMP

100 Ohm Twinax, 20 AWG stranded (7x28) one tinned, one bare copper conductor, FEP insulation, overall FEP dielectric, Duofoil® + tinned copper braid shield 85%, FEP jacket.

Physical Characteristics (Overall)

AWGStrandingMaterialConstruction n x DNominal DiameterNo. of Pairs
207x28TC - Tinned CopperStranded0.037 in1
7x28BC - Bare CopperStranded0.037 in
Conductor Count: 2
MaterialMaterial Trade NameNominal Diameter
FEP - Fluorinated Ethylene PropyleneTeflon®0.072 in
Color Chart
1Natural (bare conductor)
2Natural (tinned conductor)
Inner Jacket Material
MaterialMaterial Trade NameNominal Diameter
FEP - Fluorinated Ethylene PropyleneTeflon®0.201 in
Outer Shield Material
TypeLayerMaterialMaterial Trade NameCoverage [%]
Tape1Alum / Poly / AlumDuofoil®100%
Braid2TC - Tinned Copper85%
Outer Jacket Material
MaterialMaterial Trade NameNominal Diameter
FEP - Fluorinated Ethylene PropyleneTeflon®0.259 in

Electrical Characteristics

Conductor DCR
Nominal Conductor DCRNominal Outer Shield DCR
9.5 Ohm/1000ft2.5 Ohm/1000ft
Nom. Capacitance Conductor to ConductorNom. Capacitance Conductor to Other Conductor to ShieldNom. Capacitance Conductor to Shield
14 pF/ft23 pF/ft14 pF/ft
Nominal Inductance
0.155 µH/ft
Nominal Characteristic Impedance
100 Ohm
High Frequency (Nominal/Typical)
Frequency [MHz]Nom. Insertion Loss
1 MHz0.3 dB/100m
10 MHz1.2 dB/100m
50 MHz2.8 dB/100m
100 MHz4.1 dB/100m
200 MHz6.4 dB/100m
300 MHz8.4 dB/100m
400 MHz10.2 dB/100m
Max. Delay SkewNominal DelayNominal Velocity of Propagation (VP) [%]
69.5 ns/100m1.46 ns/ft69.50%
UL Voltage Rating
300 V RMS

Temperature Range

Operating Temp Range: -70°C To +200°C

Mechanical Characteristics

UV Resistance: Yes - Black only
Bulk Cable Weight: 52 lbs/1000ft
Max Recommended Pulling Tension: 88 lbs
Min Bend Radius/Minor Axis: 2.75 in


NEC/(UL) Specification: CMP
CEC/C(UL) Specification: CMP
CPR Euroclass: Eca

Applicable Environmental and Other Programs

EU Directive 2000/53/EC (ELV): Yes
EU Directive 2003/96/EC (BFR): Yes
EU Directive 2011/65/EU (ROHS II): Yes
EU Directive 2012/19/EU (WEEE): Yes
EU Directive 2015/863/EU: Yes
EU Directive Compliance: EU Directive 2011/65/EU (ROHS II)
EU CE Mark: Yes
EU RoHS Compliance Date (yyyy-mm-dd): 2001-01-01


Suitability - Aerial: Yes - Black only, when supported by messenger wire
Suitability - Burial: No
Suitability - Hazardous Locations: No
Suitability - Indoor: Yes
Suitability - Outdoor: Yes - Black only

Flammability, LS0H, Toxicity Testing

UL Flammability: NFPA 262
CSA Flammability: FT6
ISO/IEC Flammability: IEC 60332-1-2
UL voltage rating: 300 V RMS


Plenum (Y/N): Yes

Part Number

Non-Plenum Number: 9207
Item #ColorPutup TypeLengthUPC
89207 010100BlackReel100 ft612825220756
89207 010500BlackReel500 ft612825220770
89207 0101000BlackReel1,000 ft612825220763
Footnote: C - CRATE REEL PUT-UP.

Product Notes

Notes: Teflon® is a registered trademark of Chemours and is used under license by Belden, Inc.


Update and Revision: Revision Number: 0.250 Revision Date: 04-28-2020
Date: 2001-01-01
No accessories are available for this product