8 Layer Board
8 Layer Board
8 Layer Board
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Jämförelse mellan Thermount® och FR4-material<br />
Mechanical Properties of Nonwoven Aramid Laminate<br />
Proberty Units Test Method 1080 Nonwoven<br />
E-glass Aramid<br />
Resin Content Weight % Basis weight 50 52<br />
Density g/cc Archimedes 1.7 1.34<br />
Cu Peel Strength pli 1/8" etched 7.1 5.2<br />
Peel (ther.shock) pli 1/8" etched 6.4 5.5<br />
Tg °C TMA 129 165<br />
CTE: X ( 0-100 C ) ppm/°C TMA 17 7<br />
CTE: Y ( 0-100 C ) ppm/°C TMA 18 8<br />
CTE: Z ( 0-100 C ) ppm/°C TMA 54 115<br />
Dim. Stability % IPC TM-650 0.04 0.02<br />
Electrical properties<br />
Dielectric Strength Volts/mil 1665 2081<br />
Dielectric Constant 1 Mhz 4.6 3.9<br />
Dissipation Factor 1 Mhz 0.023 0.015<br />
Physical properties<br />
Water Absorption % 0.15 0.44<br />
Thermal Conductivity W/m°K 0.35 0.20<br />
Laminate Smoothness ( Å ) 4200 2200<br />
Laser Ablation CO 2 Laser Molten glass Uniform<br />
residue consistent
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