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Electrical characteristics for Cat.5e UTP

Property Nominal Value Unit
Characteristic impedance @ 100 MHz 100± 15 Ω
Nominal characteristic impedance @ 100 MHz 100± 5 Ω
DC-Loop resistance ≤ 0.188 Ω/m
Propagation speed 0.64 c
Propagation delay 4.80-5.30 ns/m
Delay skew < 100 MHz < 0.20 ns/m
Capacitance at 800 Hz 52 pF/m
Inductance 525 nH/m
Cutoff frequency 50323 Hz
Max tensile load, during installation 100 N
Wire size AWG-24 (0.205 mm² )
Insulation thickness 0.245 mm
Maximum current per conductor 0.577 A
Temperature operating -55 to +60 °C
 

 

Jactket Dielectric for Cat5e cables

Acronym Material
PE Polyethylene
FP Foamed polyethylene
FEP Teflon / Fluorinated Ethylene Propylene
FFEP Foamed Teflon / Fluorinated Ethylene Propylene
AD/PE Air dielectric / Polyethylene

 

Individual twist lengths

By altering the length of each twist,crosstalk is reduced, without affecting the impedance.

Pair color [cm]   per turn Turns per [m]
Green 1.53 65.2
Blue 1.54 64.8
Orange 1.78 56.2
Brown 1.94 51.7

 

Environmental ratings

US & Canada Fire certifications:

Class Acronym Standards
CMP  Plenum CSA
CMR Riser UL
CMG General purpose CSA FT4
CM UL 1685 (UL 1581, Sec. 1160) Vertical-Tray
CMX Residential UL 1581, Sec. 1080 (VW-1)
CMH CSA FT1