SB400

Technical Specification

SB400

Harbour’s SB coaxial cables have been designed for low attenuation at high frequencies, while using similar dimensions to MIL-DTL-17 constructions. Standard connectors may frequently be used, thereby avoiding tooling charges.

Solid PTFE dielectrics are manufactured with tight tolerances to ensure impedance uniformity and to effect VSWR levels that meet or exceed MIL-DTL-17 specifications for cables of comparable size. The strip braid configuration is by far the most effective means of lowering attenuation levels of coaxial cable at high frequencies while providing shielding effectiveness levels that exceed those of flexible MIL-DTL-17 cables. Flat strips of silver plated copper are braided over the dielectric core, frequently with an intermediate metallized mylar or polyimide layer, and an outer round wire braid. This shielding technique provides superior shielding effectiveness and lower transfer impedance than any standard double braided mil-spec construction.

FEP jackets are typically used, but alternate designs are available to special order. These cables may incorporate flame retardant PVC and abrasion resistant overall braids. Marker tapes or surface printing are used for positive identification.

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Stranding (metric)

19/0.20

Stranding (awg)

19/0.008

Conductor Material

Silver Plated Copper Weld

Conductor Diameter Min (mm)

0.98

Conductor Diameter Min (in)

0.0385

Insulation Material

PTFE

Diameter over insulation - Min. (mm)

2.95

Diameter over insulation - Min. Inch

0.116

Number of cores

1

1st Shield material

Flat Silver Plated Copper Braid

1st shield Diameter (mm)

3.20

1st shield Diameter (in)

3.35

2nd Shield material

Aluminium Polyester Tape

2nd shield Diameter (mm)

3.35

2nd shield Diameter (in)

0.132

3rd Shield material

Round Silver Plated Copper Braid

3rd shield Diameter (in)

3.86

3rd shield Diameter (mm)

0.152

Jacket Material

FEP

Jacket diameter (mm)

4.95

Jacket diameter (in)

0.195

Minimum Temperature °C

-55

Maximum Temperature °C

200

Weight (kg/km)

70.09

Weight (lbs/kft)

47