Product Hierarchy
Product Hierarchy

DIW25 - Category 3 Backbone Cable, 25 Pair, U/UTP, CMR

Category 3 Premise Backbone Cable (16MHz), DIW 25 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

AWGStrandingMaterialNumber of Pairs
24SolidBC - Bare Copper25
MaterialColor Code
PVC - Polyvinyl ChlorideWestern Electric
Bonded-Pair: No
Outer Jacket Material
MaterialNom. DiameterRipcord
PVC - Polyvinyl Chloride0.380 inYes

Electrical Characteristics

Max. Conductor DCRMax. DCR UnbalanceMax. Capacitance UnbalanceNom. Mutual Capacitance
93.8 Ohm/km5%330 pF/100m17 pF/ft
Frequency [MHz]Max. DelayMax. Delay SkewNom. Velocity of Propagation (VP) [%]
16 MHz543 ns/100m45 ns/100m68%
High Freq
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
0.772 MHz2.2 dB/100m47.0 dB43.0 dB50.1 dB46.1 dB
1 MHz2.6 dB/100m45.0 dB41.0 dB47.8 dB43.8 dB12.0 dB100 ± 15 Ohm
4 MHz5.6 dB/100m36.0 dB32.0 dB36.0 dB32.0 dB12.0 dB100 ± 15 Ohm
8 MHz8.5 dB/100m31.0 dB28.0 dB28.3 dB24.3 dB12.0 dB100 ± 15 Ohm
10 MHz9.7 dB/100m30.0 dB26.0 dB26.2 dB22.3 dB12.0 dB100 ± 15 Ohm
16 MHz13.1 dB/100m27.0 dB23.0 dB20.1 dB16.1 dB10.0 dB100 ± 15 Ohm
UL Voltage Rating
300 V (CMR)

Mechanical Characteristics

UL Rating.OperatingInstallationStorage
60°C-30°C To +60°C-30°C To +60°C-30°C To +60°C
Bend Radius
Stationary Min.Installation Min.
4.0 in7.75 in
Max. Pull Tension: 150 lbs
Bulk Cable Weight: 100 lbs/1000ft

Standards and Compliance

Environmental Suitability: Riser, Indoor
Flammability / Fire Resistance: UL 1666 Riser, FT4, FT4, IEC 60332-1-2
NEC / UL Compliance: CMR
CEC / C(UL) Compliance: CMR
ICEA Compliance: S-90-661-2012
NEMA Compliance: NEMA WC-63.1
Data Category: Category 3
TIA/EIA Compliance: ANSI/TIA-568.2-D Category 3
CPR Euroclass: Eca
European Directive Compliance: EU CE Mark, EU Directive 2015/863/EU, EU Directive 2011/65/EU (ROHS II), EU Directive 2012/19/EU (WEEE), REACH: 2020-01-16
APAC Compliance: China RoHS II (GB/T 26572-2011)

Part Number

Plenum Number: DPLN25
Item #ColorPutup TypeLengthUPC
DIW25 732CUTOliveCut to Length612825060611
DIW25 732CUTOliveCut to Length1 ft612825060611
DIW25 732500OliveReel500 ft612825060628
DIW25 732500OliveReel500 ft612825060628
DIW25 7321000OliveReel1,000 ft612825060635
DIW25 7321000OliveReel1,000 ft612825060635
DIW25 732500BOliveReel1,500 ft612825285533
DIW25 7325000OliveReel5,000 ft612825060642
DIW25 7325000OliveReel5,000 ft612825060642

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.


Update and Revision: Revision Number: 0.354 Revision Date: 09-30-2020
Date: 2005-08-19
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