High-temperature resistant SiO₂-insulated semi-rigid coaxial cable

High-temperature resistant SiO₂-insulated semi-rigid coaxial cable

Silica (SiO₂) insulated RF cables use flexible silica as the dielectric medium. They feature an exceptionally wide operating temperature range, along with outstanding high-temperature resistance, radiation tolerance, and flame retardancy, making them ideal for high-frequency signal transmission in extreme environments.

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Application Field
Products Instruction
Mechanical Characteristics
Electrical and Environmental Performance

Applications for silica-insulated semi-rigid RF cables: vibration sensors, high-temperature fixed installations, in-core reactor measurements, and high-shielding requirements.

1. Inner conductor: Silver-plated copper wire

2. Insulation: SiO₂.

3. Outer conductor: Copper-clad steel

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Characteristic Impedance	50Ω
Capacitance	≤120pF/M
Insulation Resistance@22℃	≥1.0×10¹³Ω·m
Attenuation Constant@22℃	≤0.150dB/m@0.2GHz ≤0.356dB/m@1.0GHz ≤0.894dB/m@5.0GHz ≤1.370dB/m@10GHz ≤2.004dB/m@18GHz
Continuous operating temperature	-273℃~+1050℃
VSWR	≤1.50
Minimum bending radius	36mm
Withstand voltage	AC 1500V for 1 minute without breakdown
Corona extinction voltage	1900V.min