Northern Connectors Radiall RF & Microwave Cable Assemblies - Manual (Page 35)

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B-36
CONSTRUCTION / DImENSIONS
material mm inches
center conductor solid SPC (1) 1.63 0.064
dielectric solid PTFE (2) 5.31 0.209
inner shield TPAl (3) tubing 6.35 0.250
outer shield - - -
jacket - - -
ElECTRICal ChaRaCTERISTICS
characteristic impedance 50Ω ± 1Ω
operating frequency range DC - 18 GHz
shielding effectiveness 110 dB
voltage withstanding 7 500 V rms
peak power 6.1 kW
capacitance 89 pF / m 27 pF / ft
velocity of propagation 70 % (4.8 ns / m)
mEChaNICal ChaRaCTERISTICS
recommended minimum
bending radius
9.53 mm 0.375 inch
weight 79.5 g / m 0.0530 lbs / ft
ENVIRONmENTal ChaRaCTERISTICS
operating temperature range -40 / +100 °C -40 / +212 °F
fire resistance not applicable
halogen free no
fREqUENCy / aTTENUaTION (typ.) /
CW maX pOWER (sea level / 25 °C)
GHz dB / m dB / ft Watts
1.0 0.22 0.07 550
2.0 0.33 0.10 389
3.0 0.43 0.13 318
6.0 0.68 0.21 225
8.0 0.83 0.25 194
10.0 0.97 0.29 174
12.4 1.13 0.34 156
18.0 1.48 0.45 130
20.0 1.60 0.49 123
attenuation calculation (dB/m) (0.18 x √f GHz) + (0.04 x f GHz)
power calculation (W) 550 / √f GHz
(1) SPC = Silver Plated Copper
(2) PTFE = PolyTetraFluoroEthylene
(3) TPAl = Tin Plated Aluminum
Based on RG401 standard, this cable will
be selected for application requiring easy
conformability and/or application requiring
reduced weight.
Due to the aluminum outer conductor, this
cable can be hand formed with exceptional
ease with no spring back effect.
Cable can be reshaped, eliminating the need
for costly drawings.
The outer conductor material (aluminum)
slightly increases the attenuation compared
to standard RG401.
APPLICATION NOTE
Cable assemblies
SEmI-RIgID CablE .250
(Aluminum)
p/N: C291 874 187
Note: typical attenuation for a couple of connectors (dB) = 0.045 x √f (GHz)