polymer_dielectric_constant_125

polymer

This is a polymer-based dielectric material engineered or formulated to achieve a dielectric constant of approximately 1.25, positioning it in the low-permittivity category useful for high-frequency and microwave applications. Polymers with controlled dielectric constants in this range are used in RF/microwave substrates, printed circuit boards, antenna systems, and insulation layers where minimizing signal loss and maintaining dimensional stability under thermal cycling are critical. Its appeal lies in combining the processability and cost advantages of polymeric systems with the low-loss characteristics needed for signal integrity—making it an alternative to rigid ceramic substrates in applications where mechanical flexibility, lighter weight, or ease of integration with existing manufacturing processes provide value.

RF/microwave substrateshigh-frequency PCBsantenna and radome materialswireless communication systemslow-loss dielectric insulation

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Dielectric Constant (Relative Permittivity)(εr)
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median of 2 measurements
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Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.