Data Sheet

DATA SHEET
2170002
RG 178 B/U
valid from :
12.06.2008
elaborated by:
TE-K: A. Khan / H. Pfeffer
Document: DB2170002EN page 1 of 1
Nr.: 0019/0894
Application
Coaxial cable for radio- and computer systems as well as the entire field of commercial radio-frequency
technology and electronics for low range transmissions, and with the small cable diameter, for application in
narrow spaces. Cable design and electrical properties of RG 178 B/U to MIL-C 17 F. Designation according to
MIL-C 17 F : M 17/93 – RG178.
The cable is intended for limited flexible use and for static laying. PTFE material is used to meet requirements
concerning low and high ambient temperatures resp. chemical stress.
Design
Inner conductor stranded, silvered, copper-clad steel wires, (30AWG), 0.057 mm
2
, 7 x 0.102 mm,
0.30 ± 0.025 mm∅
Insulation PTFE, , 0.84 ± 0.051 mm∅
Outer conductor silvered copper braid (38AWG), coverage nom. 96 %
Sheath FEP, transparent brown, outer diameter 1.81 ± 0.13 mm ∅
Marking on the sheath:
No marking required.
Electrical properties at 20°C
DC resistance inner conductor
max.Ω/km
802
Insulation resistance
min. GΩxkm
10
Capacitance at 1 kHz nom. nF/km 93
Nominal velocity of propagation % 69
Impedance
Ω 50 ± 2
Attenuation at
1 MHz dB/100m nom. 8
Acc. to MIL 17/93G
5 MHz dB/100m nom. 15
10 MHz dB/100m nom. 20
20 MHz dB/100m nom. 26
50 MHz dB/100m nom. 32 max. 38,05
100 MHz dB/100m nom. 43 max.52,49
200 MHz dB/100m nom. 62 max.75,46
400 MHz dB/100m nom. 92 max.108.26
800 MHz dB/100m nom. 134 max.154.2
1 GHz dB/100m nom. 153 max.170.6
2 GHz dB/100m max.249.34
3 GHz dB/100m max.308.4
HF voltage, peak value (not for power purposes)
max. kV
1.0
Working voltage (nominal
voltage)
50 Hz U
eff
kV 1.5
Test voltage U
eff
kV 2
Mechanical and thermal properties
Weight approx. kg/km 10
Minimum bending radius fixed installation mm 10
repeated bendings mm 19
Permissible temperature range fixed installation °C - 90 up to + 200
Fire load kWh/m 0.01
RoHS directive This cable confirms to RoHS directive (2002/95/EG)