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S40501 - 50 Ohm Coaxial RF Cable

S40501 is a 50 Ohm coaxial cable and the industry’s workhorse, with decades of proven performance in the aerospace and defense markets. The S40501 coax cable features dual shielding, the inner spiral shield providing a close-conforming shield similar to that of a semi-rigid tubing. When compared to RG405, S40501 has comparable attenuation figures and a considerably higher temperature rating. Impedance is precisely controlled for low VSWR’s.

S40501 Product Bulletin

S40501 Burn Test Data

Cable Construction

  • Conductor: Silver-Plated Copper-Clad Steel
  • Dielectric: PTFE
  • Shield #1: Silver-Plated  Copper Flat Spiral Braid
  • Shield #2:Silver-Plated Copper Braid
  • Jacket: Extruded FEP, Solid Blue

Physical Data

  • Conductor:24 AWG Solid SPCCS
  • Temperature Range: -55/200°C
  • Outer Diameter: in (mm)0.10 (2.64)
  • Minimum Bend Radius: in (mm)0.63 (16.00)
  • Weight: lbs/100 ft (kg/100 m)1.40 (2.10)

Electrical Data

  • Impedance: ohms50
  • Capacitance: pF/ft (m)29.40 (96.50)
  • Velocity of Propagation: 70.00%
  • Time Delay: ns/ft (m)1.45 (4.76)
  • Shielding Effectiveness: dB (min)-110
  • Dielectric Voltage Rating: (kV, RMS)2.50
  • DC Resistance: ohms/1000 ft (m)24.20 (79.40)


Frequency Nom/Min dB/100 ft Nom/Min (dB/100 m)
@0.4 GHz 12.1/13.3 (39.7/43.6)
@1.0 GHz 19.4/21.4 (63.6/70.2)
@1.6 GHz 24.8/27.4 (81.4/89.9)
@5.0 GHz 45.7/50.3 (149.9/165.0)


Formula for Attenuation:
(K1 × √F(MHz) + (K2 × F(MHz))

K Values (nom loss):
K1 =0.589   K2 =0.00081

Spec Sheet Includes:

  • Assembly Loss at
  • Product Bulletin
  • Burn Test Data

Get Spec Sheet

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