Coaxial Cable Data

Coaxial cables are used frequently in pulsed power and HV design, not only for connections between the source (HV power supply or pulse generator) and the load, but also between different modules in the power system or pulse generator.

In addition, coaxial cables can often be used for square pulse generation, particularly if the pulse length is relatively short, since the cable can be charged up and then switched out as a transmission line (including Blumlein configurations).

The following table includes data for 35 commonly used RG/U (now Mil-C-17) style coaxial cables including the dielectric material, center conductor and shield makeup, cable dimensions, nominal impedance, capacitance and inductance per foot, and rated maximum operating voltage (RMS).

RG/U TypeMil-C-17 TypeDielectric MaterialCenter ConductorDielectric Diameter (in.)Number / Type of ShieldsO.D. (in.)Nom. Imp. (ohms)Nom. Cap. (pF / ft.)Nom.l Ind. (nH / ft.)Max. Rated Operating Voltage (Vrms)
5M17/73PE16SC0.1852:BC0.33252.528.578.53000
5A,BM17/73PE16SC0.1812:SC0.3285030.8773000
8M17/74PE7/21BC0.2851:BC0.4055229.579.84000
8AM17/74PE7/21BC0.2851:BC0.4055229.579.85000
9M17/75PE7/21SC0.282: Inner SC,0.425130784000
Outer BC
9AM17/75PE7/21SC0.282:SC0.425130784000
9BM17/75PE7/21SC0.282:SC0.425130785000
14AM17/78PE10BC0.372:BC0.5455229.579.87000
17, 17AM17/79PE.188BC0.681:BC0.875229.579.811000
19, 19AM17/81PE.250BC0.911:BC1.125229.579.814000
21, 21APE16N0.1852:SC0.332532981.42700
54AM17/73PE7/.0152BC0.1781:TC0.255826.589.13000
55, 55BM17/84PE20BC0.1162:TC0.20653.528.581.61900
58, 58BM17/28PE20BC0.1161:TC0.19553.528.581.61900
58AM17/28PE19/.0071TC0.1161:TC0.1955228.577.11900
58CM17/28PE19/.0071TC0.1161:TC0.1955030.8771900
122M17/54PE27/36TC0.0961:TC0.165029.473.51900
174M17/119PE7/34CW0.01891:TC0.15030.8771500
177M17/67PE.195BC0.682:SC0.8955030.87711000
178BM17/93PTFE7/38CW0.0341:SC0.0755029.473.51000
188AM17/138PTFE7/0067CW0.061:SC0.115029.473.51200
196AM17/93PTFE7/38SCW0.0341:SC0.085029.473.51000
213M17/74PE7/.0296BC0.2851:BC0.4055030.8775000
214M17/75PE7/.0296BC0.2852:SC0.4255030.8775000
217M17/78PE.106BC0.372:BC0.5455030.8777000
218M17/79PE.195BC0.681:BC0.875030.87711000
220M17/81PE.260BC0.911:BC1.125030.87714000
223M17/84PE.035SC0.1162:SC0.2165030.8771900
316M17/113PTFE7/0067CW0.061:SC0.1025029.473.51200

Abbreviations

Dielectrics:

PE – Solid Polyethylene

PTFE – Solid Polytetrafluoroethylene

 

Conductors and Braid Materials:

BC – Bare Copper

SC – Silver Covered Copper

TC – Tinned Copper

CW – Copperweld

N – Nichrome


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