Aluminum Oxide Ceramic Substrates Porperties

Item No.

AO95

AO96

Purity (wt%)

95%

96%

Density (g/cm³)

>3.65

>3.75

Thermal conductivity (W/m. K)

27

24

Thermal Expansion (x10^-6/^oC)

<7.7

<7.7

Dielectric Strength (Kv/mm)

>15

>14

Dielectric Constant (at 1MHZ)

9.2

9.8

Loss Tangent (x10^-4 @1MHZ)

3

4

Volume Resistivity (ohm-m)

>10¹² at 20^oC
>10⁸ at 500^oC

>10¹³ 20^oC
>3x10⁷ at 500^oC

Flexural Strength (N/mm²)

>280

>330

Substrate Specification

Maximum Dimension (mm)

100 x 200

Thickness (mm)

0.63 - 0.30?0.1mm

Surface Roughness

as fired 0.3?  as lapped 0.075?  as polished 0.025?

Flatness

           0.1016/25.4                                                       0.076/25.4