Category 3 Backbone Cable, 50 Pair, U/UTP, CMR (Category 3 Cable) – Belden (DIW50)

Features & Benefits

• Rugged Design: Cables meet and exceed ANSI/TIA-568-C.2 and CSA T529-95 specifications
• Engineered to Perform: High-value UTP cable engineered to perform to Category 3 requirements per ANSI/TIA-568-C.2

Specifications

Product Overview

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

Construction Details

Conductor

Size	Stranding	Material	No. of Pairs
24	Solid	BC – Bare Copper	50

Insulation

Material	Color Code
PVC – Polyvinyl Chloride	Western Electric Bound in 25 Pair Sub-Units, Binder 1: Blue/White, Binder 2: Orange/White

Outer Jacket

Material	Nom. Diameter	Ripcord
PVC – Polyvinyl Chloride	0.540 in (13.7 mm)	Yes

Overall Cable Diameter (Nominal)	0.540 in (13.7 mm)

Electrical Characteristics

Electricals

Max. Conductor DCR	Max. Capacitance Unbalance
93.8 Ohm/km	330 pF/100m

Delay

Frequency	Max. Delay	Max. Delay Skew	Nom. Velocity of Prop.
16 MHz	543 ns/100m	45 ns/100m	68%

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
0.772	2.2 dB/100m	47.0	43.0	50.1	46.1
1	2.6 dB/100m	45.0	41.0	47.8	43.8	12.0	100 ± 15 Ohm
4	5.6 dB/100m	36.0	32.0	36.0	32.0	12.0	100 ± 15 Ohm
8	8.5 dB/100m	31.0	28.0	28.3	24.3	12.0	100 ± 15 Ohm
10	9.7 dB/100m	30.0	26.0	26.2	22.3	12.0	100 ± 15 Ohm
16	13.1 dB/100m	27.0	23.0	20.1	16.1	10.0	100 ± 15 Ohm

Voltage

UL Voltage Rating
300 V (CMR)

Mechanical Characteristics

Temperature

UL Temperature	Operating	Installation	Storage
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

Part Numbers

Item #	Color	Putup Type	Length	UPC
DIW50 732CUT	Olive	Cut to Length		612825060659
DIW50 732CUT	Olive	Cut to Length	1 ft	612825060659
DIW50 7321000	Olive	Reel	1,000 ft	612825060666
DIW50 7321000	Olive	Reel	1,000 ft	612825060666
DIW50 7322500	Olive	Reel	2,500 ft	612825060673
DIW50 7322500	Olive	Reel	2,500 ft	612825060673

Systems to Support Key Applications
Blade Slot Selection Table