TLG/TPG Laminate und Prepregs für High-Speed Digital-und HF-Multilayer


Eigenschaften
  • Bromfrei
  • Ermöglicht Herstellung von 20- und höherlagigen Multilayern zu FR4-Preßtemperaturen und -Drücken
  • Prepreg & Kupferfolie als Außenlagen für dickengesteuerte HF-Multilayer
  • Alternative zu thermoplastischen Verbundfolien in Militärleiterplatten
  • Homogene Laminate für High-Speed-Datenübertragung
Anwendungen
  • High-Speed Digital
  • HF-Multilayer
  • Militär

TLG Laminate/TPG Prepregs für Multilayer

The multilayer package TLG laminates/TPG prepregs was designed to reduce electrical loss and to improve ease of fabrication. TLG/TPG are based on BT/epoxy/woven fiberglass/PTFE components.

TLG/TPG offer the following benefits to high speed designs due to the reduced dielectric constant:

  • Faster signal propagation speed/reduced propagation delay
  • Thinner cores reduce overall multilayer thickness
  • Wider traces/thinner spacings between edge coupled pairs reduce crosstalk
  • Attenuation is proportional to the square root of dielectric constant * frequency * dissipation factor

TLG/TPG offer the following additional features:
  • Reduced loss at higher frequencies resulting in lower rise-time degradation
  • More uniform construction resulting in less dielectric variation within the prepreg and laminate
  • Reduced z-axis expansion (less temperature dependent dielectric constant variation)
  • Improved prepreg flow for buried and blind via applications where through holes are not desired
  • Impedance variation along a 24" microstrip of +/- 0.5 ohms

TLG/TPG have the following benefits standard to the TacPreg/TacLam family of products:
  • Good copper adhesion on flat reverse treated foils
  • The ability to laminate at conventional FR-4 temperatures enabling Taconic to offer these products with FR-4 like economies of scale
  • TLG/TPG are dimensionally stable due to the woven glass design and show predictable movement when laminated at FR-4 conditions


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