1)Product standard
Cat 5 twenty-five-pairs unshielded data cable is accordance with China special standard No. YD/T(1019-2001), American standard No. ANSI/TIA/EIA-568B.2, ISO/IEC11801 and UL Subject 444 of America.
2) Product Description
Conductor: Solid annealed flexible copper with diameter in 0.51mm
Insulation: Solid Polyethylene, HDPE,
Pairs: four pairs, color: blue/blue-white, orange/ orange-white, green/green-white, brown/ brown-white
Cable core: 4×4 3×3
Sheath: Flame-retardant PVC or LSZH material with diameter in 12.5mm
Character impedance 100Ω
4) Product performance
(MHz) Frequency | (ohm) Character impedance | (db) Return Loss | db/100m Attenuation | db/100m Near-end crosstalk | db/100m Equivalent far-end crosstalk |
0.772 | 100±15 | 19.4 | 1.8 | 67.0 | 66.2 |
1.0 | 20.0 | 2.0 | 65.3 | 64.0 | |
4.0 | 23.0 | 4.1 | 56.3 | 52.0 | |
8.0 | 24.5 | 5.8 | 51.8 | 45.9 | |
10.0 | 25.0 | 6.5 | 50.3 | 44.0 | |
16.0 | 25.0 | 8.2 | 47.2 | 39.9 | |
20.0 | 25.0 | 9.3 | 45.8 | 38.0 | |
25.0 | 24.3 | 10.4 | 44.3 | 36.0 | |
31.25 | 23.6 | 11.7 | 42.9 | 34.1 | |
62.5 | 21.5 | 17.0 | 38.4 | 28.1 | |
100.0 | 20.1 | 22.0 | 35.3 | 24.0 |
3) Application
100BASE—T Ethernet(IEEE802.3)
100VG-AnyLAN
1000 Base-TX
Token Ring
TP—PMD (ANSI X3T9.5)
