Definition

Taconic TLY-5 is a PTFE-based laminate matching RT/duroid 5880's electrical performance at a lower price point for commercial applications. Dk 2.20, Df 0.0009 (matching the lowest reinforced PTFE values). Like all PTFE materials, TLY-5 requires surface treatment for copper adhesion and careful processing for through-hole reliability. Use TLY-5 for commercial satellite, radar, and high-frequency applications where RT/duroid's aerospace heritage isn't required. The lower cost compared to Rogers makes it attractive for volume commercial production. Confirm your fabricator is qualified on TLY-5 specifically, as PTFE processing experience varies.