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S44191 - 50 Ohm Coaxial RF Cable

S44191 is a 50 Ohm coaxial cable and the industry’s workhorse, with decades of proven performance in the aerospace and defense markets. S44191 is equivalent in size as the standard Mil-Spec RG400 coax cable but offers lower loss and improved shielding due to its construction. The construction of the S44191 features a multi-layered shielding that combines conventional shields with an inner braid woven of flat strip of silver plated copper which reduces attenuation at frequencies over 1GHz when compared to round wire braids in standard coaxial cable. The cable VSWR is lower because the braids can be applied more uniformly. The attenuation and VSWR variation due to aging and flexure is substantially less.

S44191 Product Bulletin

S44191 Burn Test Data

Cable Construction

  • Conductor: Silver-Plated Copper
  • Dielectric: PTFE
  • Shield #1: Silver-Plated Copper Flat Strip Braid
  • Shield #2:Aluminum/Polymide Foil
  • Shield #3:Silver-Plated Copper Braid
  • Jacket: Extruded FEP, Clear

Physical Data

  • Conductor:20 AWG Stranded SPC
  • Temperature Range: -55/200°C
  • Outer Diameter: in (mm)0.20 (4.95)
  • Minimum Bend Radius: in (mm)1.00 (25.40)
  • Weight: lbs/100 ft (kg/100 m)4.30 (6.40)

Electrical Data

  • Impedance: ohms50
  • Capacitance: pF/ft (m)29.30 (96.20)
  • Velocity of Propagation: 69.50%
  • Time Delay: ns/ft (m)1.46 (4.79)
  • Shielding Effectiveness: dB (min)-90
  • Dielectric Voltage Rating: (kV, RMS)5.00
  • DC Resistance: ohms/1000 ft (m)8.60 (28.20)


Frequency Nom/Max dB/100 ft Nom/Max (dB/100 m)
@0.4 GHz 7.3/8.0 (24.0/26.2)
@1.0 GHz 11.8/13.0 (38.7/42.7)
@1.6 GHz 15.2/16.8 (49.9/55.1)
@5.0 GHz 28.5/31.4 (93.5/103.0)


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

K Values (nom loss):
K1 =0.35   K2 =0.00075

Spec Sheet Builder

S44191 Connectors

Select one or more connector files to download directly or add to your compiled pdf document.

Connector TypeDescriptionPart NumberTermination InstructionsAdd to Spec Sheet
50 Ohm ARINC404/600 Size 5110123T-110123
600 Size 1190101T-190XXX
600 Modified Size 1190102T-190XXX
404 Size 1190119T-190XXX
50 Ohm BNCBulkhead Jack111202T-111202
Straight Plug190112T-190XXX
90° Plug190113T-190XXX
Inline Jack190127T-190XXX
50 Ohm C ConnectorsStraight Plug190106T-190XXX
90° Plug190107T-190XXX
50 Ohm HNStraight Plug190104T-190XXX
90° Plug190105T-190XXX
50 Ohm NBulkhead Jack110087T-110788
Straight Plug190110T-190XXX
90° Plug190111T-190XXX
50 Ohm QMAStraight Plug110576T-110576
90° Plug110577
50 Ohm SMAStraight Plug110198T-110198
90° Plug110207T-110207
50 Ohm TNCStraight Plug190108T-190XXX
90° Plug190109T-190XXX
Bulkhead Jack190121T-190XXX
Inline Jack190123T-190XXX
75° Plug190131T-190XXX

Spec Sheet Includes:

  • Assembly Loss at
  • Product Bulletin
  • Burn Test Data

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