AD350A PTFE, woven fiberglass, ceramic filled specialty material has been developed to provide high thermal conductivity and low CTE for use in higher power designs. Where temperature extremes are normal and heat rejection is a primary consideration, AD350A continues to perform.
Please see below for a sampling of data for this material formulation. For detailed material information and to use advanced features such as filtering, visit the Laminate Properties Tool.
| AD250C™ | AD255C™ | AD300D™ | AD350A™ | |
|---|---|---|---|---|
| Dielectric Constant, @10GHZ (2.5 GHz) Typical (Process) | 2.50+/-0.04 | 2.55+/-0.04 | 2.97, 3.03 +/-0.05 | 3.50+/-0.05 |
| Dielectric Constant, @10GHZ (2.5 GHz) Typical (Design) | 2.52 | 2.60 | 2.94, 3.03 | 3.54 |
| Dissipation Factor TAN @10 GHz (2.5 GHz) (Typical) | 0.0013 | 0.0013 | 0.0021 | 0.0033 |
| Thermal Coefficient εr -50°C to 150°C ppm/°C (Typical) | -117 | -110 | -73 | -57 |
| Volume Resistivity Mohm (Typical) | 4.8x108 | 7.4x108 | 1.7x108 | 1.5x109 |
| Surface Resistivity Mohm (Typical) | 4.1x107 | 3.6x107 | 5.1x107 | 9.5x107 |
| Water Absorption D48/50% (Typical) | 0.0422 | 0.0322 | 0.04 | 0.1022 |
| Thermal Conductivity W/m/°K (Typical) 50°C ASTM D5470 | 0.33 | 0.35 | 0.37 | 0.44 |
| Coefficient of Thermal Expansion -55° to 288°C ppm/°C (Typical) X | 47 | 34 | 24 | 18 |
| Coefficient of Thermal Expansion -55° to 288°C ppm/°C (Typical) Y | 29 | 26 | 23 | 18 |
| Coefficient of Thermal Expansion -55° to 288°C ppm/°C (Typical) Z | 196 | 196 | 98 | 63 |
| Peel Strength 1 oz (35um) ED Foil lbs/in. (N/mm) (Typical) | 14.8 (2.6) | 13.6 (2.4) | 18.3 (3.2) | 14.7 (2.6) |
| Density gm/cm3 (Typical) | 2.28 | 2.28 | 2.23 | 2.43 |
| Flammability Rating UL94 | V-0 | V-0 | V-0 | V-0 |
| Lead-Free Process Compatible | Y | Y | Y | Y |
| PIM dBc Typical | -164 | -164 | -159 | -164 |
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