Product Hierarchy
Product Hierarchy

DIW50 - Category 3 Backbone Cable, 50 Pair, U/UTP, CMR




Category 3 Premise Backbone Cable (16MHz), DIW 50 Pair, 24 AWG Solid Bare Copper Conductors, U/UTP, Riser-CMR, PVC jacket

Product Overview

Suitable Applications: Premise Backbone Cable, Ethernet 10BASE-T, Analog Phone, FAX

Construction Details

Conductor
SizeStrandingMaterialNo. of Pairs
24SolidBC - Bare Copper50
Insulation
MaterialColor Code
PVC - Polyvinyl ChlorideWestern Electric Bound in 25 Pair Sub-Units, Binder 1: Blue/White, Binder 2: Orange/White
Outer Jacket
MaterialNom. DiameterRipcord
PVC - Polyvinyl Chloride0.540 in (13.7 mm)Yes
Overall Cable Diameter (Nominal): 0.540 in (13.7 mm)

Electrical Characteristics

Electricals
Max. Conductor DCRMax. Capacitance Unbalance
93.8 Ohm/km330 pF/100m
Delay
FrequencyMax. DelayMax. Delay SkewNom. Velocity of Prop.
16 MHz543 ns/100m45 ns/100m68%
High Frequency
Frequency [MHz]Max. Insertion Loss (Attenuation)Min. NEXT [dB]Min. PSNEXT [dB]Min. ACR [dB]Min. PSACR [dB]Min. RL (Return Loss) [dB]Max./Min. Fitted Impedance
0.7722.2 dB/100m47.043.050.146.1
12.6 dB/100m45.041.047.843.812.0100 ± 15 Ohm
45.6 dB/100m36.032.036.032.012.0100 ± 15 Ohm
88.5 dB/100m31.028.028.324.312.0100 ± 15 Ohm
109.7 dB/100m30.026.026.222.312.0100 ± 15 Ohm
1613.1 dB/100m27.023.020.116.110.0100 ± 15 Ohm
Voltage
UL Voltage Rating
300 V (CMR)

Mechanical Characteristics

Temperature
UL TemperatureOperatingInstallationStorage
60°C-30°C To +60°C-30°C To +60°C-30°C To +60°C
Bend Radius
Stationary Min.Installation Min.
5.5 in (140 mm)11.0 in
Max. Pull Tension: 300 lbs (140 kg)
Bulk Cable Weight: 179 lbs/1000ft

Standards and Compliance

Environmental Suitability: Riser, Indoor
Flammability / Reaction to Fire: UL 1666 Riser, FT4
CPR Compliance: CPR Euroclass: Eca
NEC / UL Compliance: CMR
CEC / C(UL) Compliance: CMR
Data Category: Category 3
TIA/EIA Compliance: ANSI/TIA-568.2-D Category 3
European Directive Compliance: EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2), EU Directive 2012/19/EU (WEEE), REACH: 2017-07-10
UK Regulation Compliance: UKCA Mark
APAC Compliance: China RoHS II (GB/T 26572-2011)
Plenum Number: DPLN50

Product Notes

Notes: Electrical values are expected performance based on cable testing and representative performance within a typical Belden system. Print Includes Descending Footage/Meter Markings.

History

Update and Revision: Revision Number: 0.503 Revision Date: 05-06-2025

Part Numbers

Variants
Item #ColorPutup TypeLengthUPC
DIW50 732CUTOliveCut to Length612825060659
DIW50 732CUTOliveCut to Length1 ft612825060659
DIW50 7321000OliveReel1,000 ft612825060666
DIW50 7321000OliveReel1,000 ft612825060666
DIW50 7322500OliveReel2,500 ft612825060673
DIW50 7322500OliveReel2,500 ft612825060673
Date: 2005-08-19
Belden-Copper-Catalog-2016.pdf
Copper-Structured-Cabling-Design-Guide.pdf
No accessories are available for this product