Description Packaging 1, 5 ea in rigid mailer Features and Benefits Common substrate for III-V nitrides as well as many other epitaxial films. Physical properties thermal expansion = 7.5 × 10-6 /°C; specific heat = 0.10 cal/°C; thermal conductivity = 46.06 @ 0 °C, 25.12 @ 100 °C, 12.56 @ 400 °C (W/m,K); dielectric constant = ~9.4 @ 300 K at A axis, ~11.58 @ C axis; loss tangent at 10 GHz < 2 × 10-5 at A axis, 5 × 10-6 at C axis Physical form Crystalline, hexagonal (a = 4.758 Å, c = 12.992)