Page <1>

V1.0

17/01/22

Coaxial Cable

Newark.com/multicomp-pro

Farnell.com/multicomp-pro

sg.element14.com/b/multicomp-pro

Important Notice : This data sheet and its contents (the “Information”) belong to the members of the AVNET group of companies (the “Group”) or are licensed to it. No licence is granted for

the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change

without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness,

any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make

any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or

where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its

negligence. Multicomp Pro is the registered trademark of Premier Farnell Limited 2019.

Part Number Table

Description

Part Number

Cable, Coax, RG178,100m

RG178

Construction

Item

Material

Diameter

(Inch)

(mm)

Inner Conductor

Silver Plated Copper Clad Steel 7 / 0.004 ±0.001

7 / 0.1 ±0.02

Dielectric

PTFE

0.033 ±0.002

0.84 ±0.05

Shield

95% Silver Plated Copper Braid

0.051 ±0.003

1.3 ±0.08

Jacket

FEP

0.071 ±0.004

1.8 ±0.1

Electrical Characteristics

Impedance

: 50Ω ±2Ω

Capacitance

: 96.5pF/m

Velocity of Propagation

: 69.5%

Conductor DCR

: 800.5Ω/km

Outer shield DCR

: 47.9Ω/km

Max. Operating Frequency : 3000MHz

Max. Operating Voltage

: 1000Vrms

Corona Extinction Voltage

: 1000Vrms

Voltage Withstand

: 2000Vrms

Spark Test

: 2000Vrms

Operating Temp. Range

: -55°C to +200°C

Attenuation (@20°C)

Frequency

(MHz)

Max. Attenuation

(dB/100ft)

Max. Attenuation

(dB/100m)

10

5.6

18.4

50

10.5

34.4

100

14

45.9

200

19

62.3

400

28

91.9

700

37

121.4

900

42.5

139.4

1,000

46

150.9

3,000

81

265.7