Product Hierarchy
Product Hierarchy

2L28050 - Flat Gray Ribbon Cable 2L280XX Series, #28-50c, 1mm Pitch, PVC Jkt

Belden 1.00mm pitch gray ribbon cable was designed for the disk drive market where the 2.00mm IDC connector is widely used.

Physical Characteristics (Overall)

AWGMaterialConstruction n x DNo. of Conductors
28TC - Tinned CopperStranded50
Conductor Count: 50
MaterialNominal Wall Thickness
PVC - Polyvinyl Chloride0.01 in
Color Chart
Outer Shield Material
No Shield
Outer Jacket Material
Nominal Wall Thickness
1.35 mm

Construction and Dimensions

Cond Spacing Center-Center: 1.0 +/- .08 mm
Cond Spacing Center-Center Outside: 48.99 +/- .30 mm
OuterJacket1, Nominal Width: 1.964 +/- .012 mm

Electrical Characteristics

Conductor DCR
Nominal Conductor DCRNominal Conductor DCR Conductor Resistance
68.2 Ohm/1000ft68.2 Ohm/1000ft
ElementNom. Capacitance Conductor to Conductor
@ 1 kHz (GSG)20 pF/ft
@ 1 MHz (GS)9.5 pF/ft
@ 1 MHz (GSG)16.5 pF/ft
ElementNominal Inductance
@ 1 MHz (GS)0.24 µH/ft
@ 1 MHz (GSG)0.16 µH/ft
Nominal Balanced Characteristic Impedance DescriptionNominal Characteristic ImpedanceNominal Characteristic Impedance Description
(GS)130 Ohm(GS)
(GSG)90 Ohm(GSG)
High Frequency (Nominal/Typical)
Frequency [MHz]Nom. Insertion Loss
10 MHz3.3 dB/100ft
20 MHz5.1 dB/100ft
30 MHz7 dB/100ft
40 MHz8.3 dB/100ft
50 MHz9.8 dB/100ft
60 MHz11.6 dB/100ft
70 MHz13.1 dB/100ft
80 MHz14.2 dB/100ft
90 MHz16.4 dB/100ft
100 MHz17.6 dB/100ft
Nominal DelayNominal Velocity of Propagation (VP) [%]
1.47 ns/ft69%
Unbalanced Crosstalk
ElementTypical Unbalanced NEXT %Typical Unbalanced FEXT %Typical Cross Talk Pulse Rise Time (ns)
10 ft. sample length4.3 MHz6.7 MHz3 ns
10 ft. sample length3.8 MHz3.4 MHz5 ns
10 ft. sample length3.6 MHz2.5 MHz7 ns
High Freq
Frequency [MHz]Max. Insertion Loss (Attenuation)
10 MHz1.4 dB/100m
20 MHz1.33 dB/100m
30 MHz
40 MHz
50 MHz
60 MHz
70 MHz
80 MHz
90 MHz
100 MHz
Max. Recommended Current [A]
Per conductor @ 20°C: 1 A
Dielectric Withstand VoltageUL Voltage Rating
2,000 V RMS300 V RMS
Electrical Characteristics Notes: Dielectric Withstand Voltage: 2000 Vrms

Temperature Range

Operating Temp Range: -40°C To +105°C

Mechanical Characteristics

Bulk Cable Weight: 57 lbs/1000ft
Min Bend Radius During Installation: 1.4 in
Min Bend Radius/Minor Axis: 1.4 in
Dimensions (WxHxD)


UL Rating: AWM Style 2651
UL AWM Style: 2651
CSA Rating: I A
CSA AWM Specification: I A

Applicable Environmental and Other Programs

EU Directive 2000/53/EC (ELV): Yes
EU Directive 2011/65/EU (ROHS II): Yes
EU Directive 2012/19/EU (WEEE): Yes
EU Directive 2015/863/EU: Yes
EU Directive Compliance: Yes
EU CE Mark: Yes
EU RoHS Compliance Date (yyyy-mm-dd): 2005-07-01
MII Order #39 (China RoHS): Yes

Flammability, LS0H, Toxicity Testing

UL Flammability: VW-1
CSA Flammability: FT1
UL voltage rating: 300 V RMS


Plenum (Y/N): No

Part Number

Item #ColorLengthUPC
2L28050 008H100Gray100 ft612825127567

Product Notes

Notes: GSG=Ground-Signal-Ground Mode


Update and Revision: Revision Number: 0.240 Revision Date: 04-28-2020
Date: 2005-07-01
No accessories are available for this product