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Ptfe Insulated Wires Ptfe Insulated Wires
Ptfe Insulated Wires Ptfe Insulated Wires Ptfe Insulated Wires

PTFE INSULATED RF- COAXIAL CABLES

PTFE is known to be the best dielectric for RF (Radio frequency) coaxial cables. The essential function of coaxial cables is to transmit high frequency energy and signals with low loss, with reflection less matching and without Phase and Amplitude distortion.

The problem in high-energy transmission is the losses because of i) cable dielectric, ii) cable construction, iii) radiation, and iv) interference with adjoining circuits.
The coaxial cable construction has been invented to overcome these problems, in which signals and energy are contained within an enclosed space. It consists of a core conductor, surrounded by pure PTFE dielectric covered with a metal shield, and finally encased in an overall jacket. The shield provides the return path as well as the confinement for RF energy, and is generally grounded.

TECHNICAL PARAMETERS OF RG COAXIAL CABLES WITH PTFE DIELECTRIC.

RG Cable Characteristic
Impedance
Core Conductor (mm) Core Dia (mm) Shield Outer Dia (mm) Continuous Working Voltage Max Operating Frequency Operating Temperature Nominal Capacitance (pf/mtr) Attenuation at 400 MHz DB/ 100m (Max)
196 A/U 50 Ohm 7 / 0.10 SPCW 0.863 PTFE 1SPC Braid 1.800 PTFE 750 VRMS 3 GHz Cryogenic to 200°C 95.0 103.00
188 A/U 50 Ohm 7 / 0.17 SPCW 1.524 PTFE 1SPC Braid 2.490 PTFE 900 VRMS 3 GHz Cryogenic to 200°C 95.0 65.60
187 A/U 75 Ohm 7 / 0.10 SPCW 1.600 PTFE 1SPC Braid 2.540 PTFE 900 VRMS 3 GHz Cryogenic to 200°C 65.6 68.90
195 A/U 95 Ohm 7 / 0.10 SPCW 2.591 PTFE 1SPC Braid 3.580 PTFE 1100 VRMS 3 GHz Cryogenic to 200°C 52.5 55.80
142 B/U 50 Ohm 1 / 1.00 SPCW 2.946 PTFE 2 SPC Braid 4.950 PTFE 1400 VRMS 12 GHz Cryogenic to 200°C 93.5 29.50
141 A/U 50 Ohm 1 / 1.00 SPCW 2.946 PTFE 1SPC Braid 4.830 VFG-1 1400 VRMS 3 GHz Cryogenic to 200°C 93.5 29.50
115 A/U 50 Ohm 7 / 0.71 SPC 6.350 PTFE 2SPC Braid 9.530 VFG-3 3700 VRMS 12 GHz Cryogenic to 200°C 93.5 17.10




PTFE SLEEVES


PTFE sleeves are made by tape wrapping and sintering process as per JSS and other specifications. PTFE sleeves/ tubings find there application in various sectors such as :-

  • Defence,space, aerospace, radars etc.

  • Electronic communication and controls equipments.

  • Insulation over electrical joints wherever connections are likely to be  heated.

  • To cover lead wires coming out of equipments.

  • In Switchgears.

  • To cover and protect hot joints in proximity with chemicals

  • PTFE sleeves are made available in various bore sizes ranging from 0.50 mm to 25.00 mm in different wall thicknesses. Common wall thicknesses are 0.25 mm, 0.30 mm, 0.40 mm and0.50 mm. PTFE sleeves are available in 11 solid colours and various combinations in bi-colour and tri-colour as per requirement.


    S. No. Nominal ID
    (mm)
    Nominal wall
    Thickness (mm)
    Overall Dia.
    (mm)
      S. No. Nominal ID
    (mm)
    Nominal wall
    Thickness (mm)
    Overall Dia.
    (mm)
    1 0.50 0.25 1.00 10 3.50 0.50 4.50
    2 0.75 0.25 1.25 11 4.00 0.50 5.00
    3 1.00 0.30 1.60 12 5.00 0.50 6.00
    4 1.50 0.30 2.10 13 6.00 0.50 7.00
    5 1.50 0.40 2.30 14 7.00 0.50 8.00
    6 2.00 0.30 2.60 15 8.00 0.50 9.00
    7 2.00 0.40 2.80 16 9.00 0.50 10.00
    8 2.50 0.40 3.30 17 10.00 0.50 11.00
    9 3.00 0.40 3.80 18 12.00 1.00 14.00

    * PTFE SLEEVES CONFORMING TO JSS SPECIFICATIONS





    PTFE Equipment WiresPTFE Insulated Multi-Core CablesPTFE High Voltage CablesPTFE High Temperature Cables
    PTFE Insulated RF Coaxial cablesPTFE SleevesRTD and Compensating Cables

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