Product Hierarchy
Product Hierarchy

1865A - Serial Digital Coax, Sub-miniature, #25 Stranded BC, CMR

25 AWG stranded (19x37) .021" bare copper conductor, gas-injected foam HDPE insulation, Duofoil®; tinned copper braid shield (95% coverage), PVC jacket.

Physical Characteristics (Overall)

AWGStrandingMaterialNominal DiameterNo. of Coax
2519x37BC - Bare Copper0.021 in1
Conductor Count: 1
MaterialNominal Diameter
PE - Polyethylene (Foam)0.094 in
Table Notes: Gas Injected
Outer Shield
TypeLayerMaterialMaterial Trade NameCoverage [%]
Tape1Tri-Laminate (Alum+Poly+Alum)Duofoil®100%
Braid2Tinned Copper (TC)95%
Outer Jacket
MaterialNominal Diameter
PVC - Polyvinyl Chloride0.15 in

Electrical Characteristics

Conductor DCR
Nominal Conductor DCRNominal Conductor DCR Conductor ResistanceNominal Outer Shield DCROuter Conductor DCR
27.4 Ohm/1000ft27.4 Ohm/1000ft5.4 Ohm/1000ft5.4 Ohm/1000ft
Nom. Capacitance Conductor to Shield
16.5 pF/ft
Nominal Inductance
0.093 µH/ft
Nominal Characteristic Impedance
75 Ohm
Return Loss (RL)
Frequency [MHz]Minimum Return (RL)
5-850 MHz21 dB
850-3000 MHz18 dB
High Frequency (Nominal/Typical)
Frequency [MHz]Nom. Insertion Loss
1 MHz0.47 dB/100ft
3.58 MHz1 dB/100ft
5 MHz1.1 dB/100ft
7 MHz1.3 dB/100ft
10 MHz1.6 dB/100ft
67.5 MHz3.6 dB/100ft
71.5 MHz3.7 dB/100ft
88.5 MHz4.1 dB/100ft
100 MHz4.4 dB/100ft
135 MHz5 dB/100ft
143 MHz5.1 dB/100ft
180 MHz5.8 dB/100ft
270 MHz7.1 dB/100ft
360 MHz8.2 dB/100ft
540 MHz10.1 dB/100ft
720 MHz11.8 dB/100ft
750 MHz12 dB/100ft
1000 MHz13.9 dB/100ft
1500 MHz17 dB/100ft
2000 MHz19.6 dB/100ft
2250 MHz20.8 dB/100ft
3000 MHz24 dB/100ft
Nominal DelayNominal Velocity of Propagation (VP) [%]
1.24 ns/ft82%
UL Voltage Rating
300 V RMS

Temperature Range

UL Temp Rating: 75°C
Operating Temperature Range: -30°C To +75°C

Mechanical Characteristics

Bulk Cable Weight: 14 lbs/1000ft
Max. Pull Tension: 27 lbs
Min. Bend Radius/Minor Axis: 1.5 in


NEC/(UL) Compliance: CMR
CEC/C(UL) Compliance: CMG
RG Type: Sub-miniature 59

Applicable Environmental and Other Programs

Environmental Space: Indoor - Riser
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 - Indoor: Yes

Flammability, LS0H, Toxicity Testing

UL Flammability: UL1666 Vertical Shaft
UL voltage rating: 300 V RMS


Plenum (Y/N): No

Related Part Numbers

Item #ColorPut-Up TypeLengthUPC
1865A 0101000BlackReel1,000 ft612825358435
1865A 0061000Blue, LightReel1,000 ft612825356752
1865A 0011000BrownReel1,000 ft612825356790
1865A 0081000GrayReel1,000 ft612825356745
1865A N3U1000Green, MilReel1,000 ft612825356806
1865A 0031000OrangeReel1,000 ft612825356776
1865A 0021000RedReel1,000 ft612825356783
1865A 0071000VioletReel1,000 ft612825358428
1865A 0091000WhiteReel1,000 ft612825358442
1865A 0041000YellowReel1,000 ft612825356769
Footnote: C - CRATE REEL PUT-UP.


Update and Revision: Revision Number: 0.342 Revision Date: 04-08-2022
Date: 2004-01-01
TB65: Digital Studio Cable Guide
No accessories are available for this product