KAELEN MICROWAVE

KL-851APreliminary

Low-Loss Coaxial Cable — Low-Loss, Extended-Temperature Coaxial Cable — Flexible Construction

Preliminary data. The figures for this part come from supplier source data and are pending verification on Kaelen production units. Please contact us to confirm values before design-in.

Frequency
DC–18 GHz
Series
KL-A · Flexible, low-loss, phase-stable
Outer diameter
8.51 mm
Attenuation @ 1 GHz
15.7 dB/100 m
Operating temperature
–55°C ~ +200°C

Structure & Materials

ElementDimension (mm)Material
Center Conductor2.26Silver-Plated Copper, Solid
Dielectric6.35Expanded PTFE Tape
Inner Shield6.55Silver-Plated Copper Strip (Flat Braid)
Interlayer6.71Aluminum-Polyester Tape (Metallized Shield)
Outer Shield7.21Silver-Plated Copper Braid (Round Wire)
Outer Jacket8.51FEP (Custom Colors Available)

Electrical Properties

ParameterValue
Operating FrequencyDC – 18 GHz
Characteristic Impedance50 Ω
Velocity of Propagation80%
Shielding Effectiveness> 95 dB

Attenuation (Typical, 25°C)

Frequency (MHz)Attenuation (dB/100m)
4007.9
100015.7
200022.3
300027.6
500033.8
1000055.8
1800072.2

Mechanical & Environmental

ParameterValue
Static Bend Radius43.18 mm
Weight0.1845 kg/m
Operating Temperature–55°C ~ +200°C
Peak Power Rating18.0 kW

Features & benefits

  • Low attenuation — 20–35% below comparable mil-spec cables of similar size
  • Extended operating temperature range (–55°C to +200°C)
  • High shielding effectiveness (> 95 dB)
  • Thermally stable expanded-PTFE dielectric — low phase shift vs. temperature

Typical applications

  • Phased-array & airborne radar
  • Electronic warfare (EW) systems
  • Military communication systems
  • High-temperature RF environments

Related parts

Need this cable terminated? Request a custom assembly using KL-851A.