Skip to Content
Main Content

S55122 - 50 Ohm Coaxial RF Cable

S55122 is a 50 Ohm coaxial cable and the industry’s workhorse, with decades of proven performance in the aerospace and defense markets. The construction of the S55122 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, providing more uniform coverage and reducing attenuation due to aging and flexure.

S55122 Product Bulletin

S55122 Burn Test Data

Cable Construction

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

Physical Data

  • Conductor:12 AWG Stranded SPC
  • Temperature Range: -55/200°C
  • Outer Diameter: in (mm)0.31 (7.87)
  • Minimum Bend Radius: in (mm)1.55 (39.37)
  • Weight: lbs/100 ft (kg/100 m)8.30 (12.40)

Electrical Data

  • Impedance: ohms50
  • Capacitance: pF/ft (m)24.00 (78.70)
  • Velocity of Propagation: 84.50%
  • Time Delay: ns/ft (m)1.21 (3.97)
  • Shielding Effectiveness: dB (min)-90
  • Dielectric Voltage Rating: (kV, RMS)6.00
  • DC Resistance: ohms/1000 ft (m)1.62 (5.30)


Frequency Nom/Max dB/100 ft Nom/Masx (dB/100 m)
@0.4 GHz 3.2/3.5 (10.5/11.5)
@1.0 GHz 5.1/5.6 (16.7/18.4)
@1.6 GHz 6.5/7.2 (21.3/23.6)
@5.0 GHz 12.0/13.2 (39.4/43.3)


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

K Values (nom loss):
K1 =0.155   K2 =0.000199

Spec Sheet Builder

S55122 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 ARINC600 Size 1190601T-190XXX
600 Modified Size 1190602T-190XXX
404 Size 1190619T-190XXX
50 Ohm BNCStraight Plug190612T-190XXX
90° Plug190613T-190XXX
50 Ohm C ConnectorsStraight Plug190606T-190XXX
90° Plug190607T-190XXX
50 Ohm HNStraight Plug190604T-190XXX
90° Plug190605T-190XXX
50 Ohm NStraight Plug190610T-190XXX
90° Plug190611T-190XXX
Bulkhead Jack190622T-190XXX
50 Ohm SMAStraight Plug190614T-190XXX
90° Plug190615T-190XXX
Inline Jack190625T-190XXX
50 Ohm TNCStraight Plug190608T-190XXX
90° Plug190609T-190XXX
Bulkhead Jack190621T-190XXX
Inline Jack190623T-190XXX
75° Plug190631T-190XXX

Spec Sheet Includes:

  • Assembly Loss at
  • Product Bulletin
  • Burn Test Data

Get Spec Sheet

contact pic about s55122

Request technical support, sample information or quote

Contact Us