Kingsignal SMT680-250 0.250" Semi-Rigid Coaxial Cable

Product Code


Attenuation @ 1 GHz

0.2300 dB/m


Key Features

  • Solid conductor surfaces and exacting tolerances minimise attenuation and VSWR
  • Solid outer conductor virtually eliminates signal leakage
  • Cable assembly mechanical tolerances to less than ±0.1 mm
  • Electrical tolerances to less than ±0.25º/GHz
RF Cable Technical Data
RF Performance
Operating Freq. Range 0.00 to 19.00 GHz Input Impedance
50 Ω
Velocity of Propagation No Data Capacitance
95.10 pF/m
Shielding Effectiveness No Data Max. Operating Voltage
7500 V
Power Handling @ 1 GHz
914.60 W
Physical Characteristics
Min. Bend Radius (Static)
22.23 mm
Weight No Data
Min. Bend Radius (Dynamic) No Data Operating Temperature -55 to 125 °C
Inner Conductor
Material Diameter 1 x 1.63 mm
Material Diameter 5.31 mm
Outer Conductor
Material Diameter 6.35 mm


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Founded in April 2002, Kingsignal Technology Co., Ltd. is a private hi-tech enterprise engaged in R&D, production and marketing of signal interconnection products such as mid-range and high-end RF coaxial cables, connectors and accessories, optical fiber, PCB, LAN cable, large logarithmic power cord and data video components.

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