Product Hierarchy
Product Hierarchy

81553 - 77Ω Twinax, #24 SCHSCA, TFE, SCHSCA Braid, PFA Jkt


Twinax, 77 ohm, 24 AWG stranded (19x36) .024" silver-coated high-strength copper alloy conductor, TFE insulation, silver-coated high strength copper alloy braid shield (93% coverage), PFA jacket, commercial non-QPL product

Physical Characteristics (Overall)

Conductor
AWGStrandingMaterialNominal DiameterNo. of ConductorsNo. of Pairs
2419x36SCHSCA - Silver Coated High Strength Copper Alloy0.024 in21
Conductor Count: 2
Insulation
MaterialMaterial Trade NameNominal Diameter
TFE - TetrafluoroethyleneTeflon®0.042 in
Outer Shield Material
TypeMaterialCoverage [%]
BraidSCHSCA - Silver-Coated High Strength Copper Alloy93 %
Outer Jacket Material
MaterialNominal Diameter
PFA - Perfluoroalkoxy0.129 in

Electrical Characteristics

Conductor DCR
Nominal Outer Shield DCROuter Conductor DCR
7.3 Ohm/1000ft7.3 Ohm/1000ft
Capacitance
Max. Capacitance UnbalanceMax. Mutual CapacitanceNom. Capacitance Conductor to Shield
5 pF/ft24 pF/ft24.0 pF/ft
Inductance
Nominal Inductance
0.118 µH/ft
Impedance
Nominal Characteristic Impedance
77 Ohm
High Frequency (Nominal/Typical)
Frequency [MHz]Nom. Insertion Loss
1 MHz1.2 dB/100ft
10 MHz4.0 dB/100ft
50 MHz9.2 dB/100ft
100 MHz13.0 dB/100ft
200 MHz18.4 dB/100ft
400 MHz26.1 dB/100ft
700 MHz34.6 dB/100ft
900 MHz39.3 dB/100ft
1000 MHz41.4 dB/100ft
Delay
Max. Delay SkewNominal DelayNominal Velocity of Propagation (VP) [%]
70 ns/100m1.45 ns/ft70 %
High Freq
Frequency [MHz]Max. Insertion Loss (Attenuation)
1 MHz1.4 dB/100ft
Voltage
UL Voltage Rating
150 V RMS

Temperature Range

UL Temp Rating: 200°C
Operating Temp Range: -55°C To +200°C

Mechanical Characteristics

Bulk Cable Weight: 15 lbs/1000ft
Max Recommended Pulling Tension: 12 lbs
Min Bend Radius/Minor Axis: 1.5 in

Standards

NEC/(UL) Specification: CL2P
CPR Euroclass: Eca
Military Specification: Commercial, non-QPL product (M17/176-00002, MIL-STD-1553 Data Bus Cable)

Applicable Environmental and Other Programs

EU Directive 2000/53/EC (ELV): No
EU Directive 2011/65/EU (ROHS II): No
EU Directive 2012/19/EU (WEEE): No
EU Directive 2015/863/EU: No
EU Directive Compliance: EU Directive 2003/11/EC (BFR)
EU CE Mark: No
CA Prop 65 (CJ for Wire & Cable): Yes

Suitability

Suitability - Burial: No
Suitability - Hazardous Locations: No
Suitability - Indoor: Yes

Flammability, LS0H, Toxicity Testing

UL Flammability: NFPA 262
ISO/IEC Flammability: IEC 60332-1-2
UL voltage rating: 150 V RMS

Plenum/Non-Plenum

Plenum (Y/N): Yes

Part Number

Variants
Item #ColorUPCLengthFootnote
81553 0061000Blue6128251955421,000 ftF Z
81553 006500Blue612825195559500 ftF Z
Footnote: F - MAY CONTAIN MORE THAN 1 PIECE. MINIMUM LENGTH OF ANY ONE PIECE IS 50'.
Z - FINAL PUT-UP MAY VARY (= OR -) 10% FOR SPOOLS OR REELS AND (+ OR -) 5% FOR UNREEL CARTONS FROM LENGTH SHOWN.

History

Update and Revision: Revision Number: 0.242 Revision Date: 08-22-2019
Belden-Copper-Catalog-2016.pdf
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