Product Hierarchy
Product Hierarchy

1540A - RISC 6000, #28-7c, BC, PO, O/A Foil+Braid, PVC Jkt, CL2

RISC 6000 IBM XX, YY Cable, 28 AWG stranded (7x36) bare copper conductors, patented step polyolefin insulation, twisted pairs, overall Beldfoil® shielded + tinned copper braid shield (65% coverage), tinned copper drain wire, PVC jacket (see RISC color code chart below).

Physical Characteristics (Overall)

AWGStrandingMaterialNo. of Conductors
287x36BC - Bare Copper7
Conductor Count: 7
LayerMaterialNominal Wall Thickness
1PP - Polypropylene0.01 in
2PE - Polyethylene0.005 in
Color Chart
1White over Blue
2White over Orange
3White over Green
4White over Brown
5White over Gray
6White over Red
7White over Yellow
Outer Shield Material
TypeLayerMaterialMaterial Trade NameCoverage [%]Drainwire MaterialDrainwire AWGDrainwire Construction n x D
Tape1Bi-Laminate (Alum+Poly)Beldfoil®100%TC - Tinned Copper287x36
Braid2Tinned Copper (TC)65%
Outer Jacket Material
MaterialNominal DiameterNominal Wall Thickness
PVC - Polyvinyl Chloride0.19 in0.019 in

Electrical Characteristics

Conductor DCR
Nominal Conductor DCRNominal Outer Shield DCR
63 Ohm/1000ft7.2 Ohm/1000ft
Nom. Capacitance Conductor to ConductorNom. Capacitance Conductor to Other Conductor to Shield
12.5 pF/ft23 pF/ft
Max. Recommended Current [A]
0.9 Amps per Conductor at 25ºC
UL Voltage Rating
150 V RMS

Mechanical Characteristics

Bulk Cable Weight: 22 lbs/1000ft
Min Bend Radius/Minor Axis: 2 in


Customer Reference Document: IBM P/N: XX, YY Cable
NEC/(UL) Compliance: CL2
Other Compliance: RJ-45 compatible

Applicable Environmental and Other Programs

EU Directive 2000/53/EC (ELV): Yes
EU Directive 2003/96/EC (BFR): Yes
EU Directive 2011/65/EU (ROHS II): Yes
EU Directive 2012/19/EU (WEEE): Yes
EU Directive Compliance: EU Directive 2003/11/EC (BFR)
EU CE Mark: Yes
EU RoHS Compliance Date (yyyy-mm-dd): 2004-01-01
MII Order #39 (China RoHS): Yes

Flammability, LS0H, Toxicity Testing

UL Flammability: UL1685 UL Loading
UL voltage rating: 150 V RMS


Plenum (Y/N): No

Part Number

Item #ColorUPC
1540A 0081000Gray612825117643
Footnote: C - CRATE REEL PUT-UP.

Product Notes

Notes: Patent # 5,220,130. Single conductors are dual insulated. Outer layer of insulation must be stripped off before attaching modular connectors.


Update and Revision: Revision Number: 0.256 Revision Date: 09-30-2020
Date: 2004-01-01
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