Pyralux® TK

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Pyralux® TK Kapton® & fluoropolymer bond ply


Pyralux® TK Kapton® & fluoropolymer bond ply features Kapton® polyimide film, coated on both sides with a proprietary B-staged modified acrylic adhesive. This bond ply can be used to encapsulate etched details for environmental protection and electrical insulation. Using bond ply can eliminate a layer of Kapton® dielectric and a layer of adhesive in low-layer count multilayer constructions.

Features & Benefits

  • Fluoropolymer film provides low-loss dielectric constant loss tangent
  • Low moisture absorption for consistent performance
  • Designed for use with Pyralux® TK Kapton® & fluoropolymer double-sided copper-clad laminate

Pyralux® TK Technical Documents

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    Pyralux® TK Product Series Properties

    Property Group Property Name Value Test Method
    Dielectric Dielectric Constant (Dk) 10GHz 2.3 Normal, 2.6 In-plane ASTM D2520 / IPC-TM-650 2.5.5.3
    Dielectric Strength (V/μm) 190 ASTM D149
    Loss Tangent (Df) 10GHz 0.0015 ASTM D2520 / IPC-TM-650 2.5.5.3
    Environmental Moisture Absorption (%) 0.3 IPC-TM-650 2.6.2

    Pyralux® TK Product Properties

    Property Name Form Factor Package Adhesive Type Dielectric Thickness (μm) Dielectric Thickness (mil) Adhesive Thickness (μm) Adhesive Thickness (mil)
    TK252525 Bond ply Roll Adhesive-less all polyimide 25.0 1.00 25.0 1.0
    TK255025 Bond ply Roll Adhesive-less all polyimide 25.0 1.00 50.0 2.0
    TK445044 Bond ply Roll Adhesive-less all polyimide 44.0 1.75 50.0 2.0