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

Product Overview

Suitable Applications: Harsh Environment, IIoT, Factory or Process Automation, Video, Audio, Data Communication, etc.

Construction Details

Conductor
No. of ElementsSizeStrandingNom. DiameterMaterial
224 AWG19x360.024 inSHSCA - Silver Coated High Strength Copper Alloy
Insulation
MaterialNom. Insulation DiameterColor Code
PTFE - Polytetrafluoroethylene0.042 in (1.1 mm)White & Blue
Outer Shield
Outer Shield TypeMaterialCoverage
BraidSilvered High Strength Copper Alloy (SHSCA)93%
Outer Jacket
MaterialNom. Diameter
PFA - Perfluoroalkoxy0.129 in (3.28 mm)

Electrical Characteristics

Attenuation
FrequencyNom. Attenuation
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
Electricals
Nom. Conductor DCRNom. Outer Shield DCRNom. Capacitance Cond-to-ShieldNom. Characteristic ImpedanceNom. Velocity of Prop.Max. Delay Skew
24.5 Ohm/1000ft7.3 Ohm/1000ft (24 Ohm/km)24.0 pF/ft (78.7 pF/m)77 Ohm70%70 ns/100m
Voltage
UL Voltage Rating
150 V RMS

Mechanical Characteristics

Temperature
UL TemperatureOperating
200°C-55°C To +200°C
Bend Radius
Stationary Min.Installation Min.
1.29 in (32.8 mm)1.29 in (32.8 mm)
Max. Pull Tension: 51 lbs (23 kg)
Bulk Cable Weight: 15 lbs/1000ft

Standards and Compliance

Environmental Suitability: Indoor, Indoor
Flammability / Reaction to Fire: NFPA 262 (UL 910), IEC 60332-1-2
CPR Compliance: CPR Euroclass: Eca; CPR UKCA Class: Eca
NEC / UL Compliance: Article 725, CL2P
Military Compliance: Commercial, non-QPL product (M17/176-00002, MIL-STD-1553 Data Bus Cable)
UK Regulation Compliance: UKCA Mark
APAC Compliance: China RoHS II (GB/T 26572-2011)

Product Notes

Notes: PF_81553 1)# Elements@Conductor1:-In Stibo it was Blank and now changed to 2. 2)Size@Conductor1 :-In Stibo it was 24 now changed to 24AWG. 3)Color@Color Chart1 01 :- In stibo it was Blank now Changed to White & Blue. 4)Cable Diameter (Nominal)- In Stibo it was Blank Now Changed to 0.129 in. 5)Coverage@OuterShield1 2 - in stibo it was 93% Now changed to 90%.

History

Update and Revision: Revision Number: 0.474 Revision Date: 02-03-2025

Part Numbers

Variants
Item #ColorPutup TypeLengthUPCFootnote
81553 006500BlueReel500 ft612825195559F Z
81553 0061000BlueReel1,000 ft612825195542F Z
Belden-Copper-Catalog-2016.pdf
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