7890A BELDEN | Alldatasheet
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Technical content
Product: 7890A Audio Snake Cable, #26-4pr, TC, Indiv. Shielded, CM Product Description Digital Audio Snake Cable, CM-Rated, 4-26 AWG tinned copper pairs, Datalene® insulation, individually shielded with Beldfoil® bonded to numbered/color-coded PVC jackets so both strip simultaneously, PVC jacket Technical Specifications Physical Characteristics (Overall) Conductor AWG Stranding Material Nominal Diameter No. of Pairs 26 7x34 TC - Tinned Copper 0.019 in 4 Conductor Count: 8 Total Number of Pairs: 4 Insulation Material Material Trade Name Nominal Diameter Nominal Wall Thickness PE - Polyethylene (Foam) Datalene® 0.054 in 0.0175 in Color Chart Number Color
1 Brown and Numbered 1
2 Red and Numbered 2
3 Orange and Numbered 3
4 Yellow and Numbered 4
Type Material Material Trade Name Coverage [%] Drainwire Material Drainwire Diameter Drainwire AWG Drainwire Construction n x D Tape Bi-Laminate (Alum+Poly) Beldfoil® 100% TC - Tinned Copper 0.019 in 26 Stranded Table Notes: Indiv. Foil tapes bonded to inner jacket Inner Jacket Material Nominal Diameter Nominal Wall Thickness PVC - Polyvinyl Chloride 0.136 in 0.014 in Outer Shield Type Material Material Trade Name Coverage [%] Drainwire Material Drainwire Diameter Drainwire AWG Drainwire Construction n x D Tape Bi-Laminate (Alum+Poly) Beldfoil® 100% TC - Tinned Copper 0.019 in 26 Stranded Outer Jacket Material Nominal Diameter Nominal Wall Thickness Ripcord PVC - Polyvinyl Chloride 0.399 in 0.034 in Yes
Electrical Characteristics
Individual Pair Nominal Shield DCR Nominal Conductor DCR Nominal Conductor DCR Conductor Resistance 25.5 Ohm/1000ft 37.3 Ohm/1000ft 37.3 Ohm/1000ft
Nom. Capacitance Conductor to Conductor Nom. Capacitance Conductor to Other Conductor to Shield 13 pF/ft 25 pF/ft Inductance Nominal Inductance 0.25 µH/ft Impedance Nominal Characteristic Impedance
110 Ohm
High Frequency (Nominal/Typical) Frequency [MHz] Nom. Insertion Loss 0.384 MHz 0.84 dB/100ft 0.7056 MHz 1.14 dB/100ft 0.768 MHz 1.18 dB/100ft 1.024 MHz 1.34 dB/100ft 1.4112 MHz 1.5 dB/100ft 1.536 MHz 1.54 dB/100ft 2.048 MHz 1.69 dB/100ft 2.8224 MHz 1.86 dB/100ft 3.072 MHz 1.92 dB/100ft 4.096 MHz 2.14 dB/100ft 5.6448 MHz 2.4 dB/100ft 6.144 MHz 2.47 dB/100ft 8.192 MHz 2.75 dB/100ft 11.2896 MHz 3.09 dB/100ft 12.288 MHz 3.18 dB/100ft 24.576 MHz 4.2 dB/100ft Delay Nominal Velocity of Propagation (VP) [%] 76% High Frequency Frequency [MHz]
0.384 MHz
0.7056 MHz
0.768 MHz
1.024 MHz
1.4112 MHz
1.536 MHz
2.048 MHz
2.8224 MHz
3.072 MHz
4.096 MHz
5.6448 MHz
6.144 MHz
8.192 MHz
11.2896 MHz
12.288 MHz
24.576 MHz
Operating Temperature Range: -30°C To +80°C Mechanical Characteristics Bulk Cable Weight: 52 lbs/1000ft Max. Pull Tension: 45 lbs Min. Bend Radius/Minor Axis: 4 in
NEC/(UL) Compliance: CM CEC/C(UL) Compliance: CM CPR Euroclass: Eca Applicable Environmental and Other Programs Environmental Space: Indoor (Not Riser or Plenum) EU Directive 2000/53/EC (ELV): Yes EU Directive 2003/11/EC (BFR): Yes EU Directive 2011/65/EU (RoHS 2): Yes EU Directive 2012/19/EU (WEEE): Yes EU Directive 2015/863/EU (RoHS 2 amendment): Yes EU Directive Compliance: EU Directive 2003/11/EC (BFR) EU CE Mark: Yes MII Order #39 (China RoHS): Yes Suitability Suitability - Indoor: Yes Flammability, LS0H, Toxicity Testing UL Flammability: UL1685 UL Loading CSA Flammability: FT4 IEC Flammability: IEC 60332-1-2 Plenum/Non-Plenum Plenum (Y/N): No Related Part Numbers Variants Item # Color Put-Up Type Length UPC 7890A Z4B2000 Violet Reel 2,000 ft 612825190738 7890A Z4B500 Violet Z4B Reel 500 ft 612825190745 7890A Z4B1000 Violet Z4B Reel 1,000 ft 612825433897 Footnote: C - CRATE REEL PUT-UP. Product Notes Notes: Pair jackets and shields are bonded so both strip simultaneously with automatic stripping equipment. Datalene® insulation features include low dielectric constant and a dissipation factor for high-speed, low-distortion data handling. Physical properties include good crush resistance and light weight. History Update and Revision: Revision Number: 0.446 Revision Date: 12-20-2022 © 2023 Belden, Inc All Rights Reserved. Although Belden makes every reasonable effort to ensure their accuracy at the time of this publication, information and specifications described here in are subject to error or omission and to change without notice, and the listing of such information and specifications does not ensure product availability. Belden provides the information and specifications herein on an "ASIS" basis, with no representations or warranties, whether express, statutory or implied. In no event will Belden be liable for any damages (including consequential, indirect, incidental, special, punitive, or exemplary damages) whatsoever, even if Belden has been advised of the possibility of such damages, whether in an action under contract, negligence or any other theory, arising out of or in connection with the use, or inability to use, the information or specifications described herein. All sales of Belden products are subject to Belden's standard terms and conditions of sale. Belden believes this product to be in compliance with all applicable environmental programs as listed in the data sheet. The information provided is correct to the best of Belden's knowledge, information and belief at the date of its publication. This information is designed only as a general guide for the safe handling, storage, and any other operation of the product itself or the one that it becomes a part of. The Product Disclosure is not to be considered a warranty or quality specification. Regulatory information is for guidance purposes only. Product users are responsible for determining the applicability of legislation and regulations based on their individual usage of the product.