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SR250-75

Construction

Inner conductor 

Silver plated copper clad steel(SCCS) 

Φ0.91 mm 

Dielectric 

PTFE 

Φ5.44 ± 0.1mm 

Outer conductor 

type1:Seamless bare copper tube 

Φ6.35 ± 0.1mm

type2:Seamless copper tube, tin plated(TP) 

type3:Seamless copper tube, silver plated(SP) 

Electrical & Mechanical Characteristics

Impedance 75±5 Ohm

Nominal capacitance 

63.5 pF/m

Velocity of propagation 

-

Insulation resistance 

- Mohm.Km

Inner conductor resistance 

- Ohm/Km

Outer conductor resistance 

- Ohm/Km

Operating temperature range 

-55°C - +125 °C 

Outer conductor integrity temperature 

175°C 

Min.bending radius 

22.3 mm 

Attenuation

Frequency(MHz)  

Max. Attenuation(dB/100m)  

Max. Attenuation(dB/100ft)  

500 4 1.2

1000

24

7.3

5000

60

18.3

10000

93

28.3

20000

147

44.8

 

 

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