Ceramic Packages

AO700/AO800 (High Flexural Strength Aluminum Oxide)

Features

AO700/AO800(High Flexural Strength Aluminum Oxide)
・ High Flexural Strength
 The material's higher strength facilitates miniaturization and lower package profiles by enabling thinner bottom layers and narrower wall widths.
・ Hermetic sealing available

Application

AO700/AO800(High Flexural Strength Aluminum Oxide) Application
  • Crystal devices
  • Various sensors that must operate under higher pressures and mechanical forces

Material Properties

Material Name A440 AO700 AO800
Color Black purple Gray Gray
Laminating Structure Applicable Applicable Applicable
Dissimilar Material Bonding Applicable Applicable Applicable
Characteristics General-Purpose Higher flexural strength
Applications General-Purpose Smaller quartz crystals
Electrical
Characteristics
Dielectric Constant 1MHz 9.8 9.4 9.4
2GHz - 9.2 9.4
Dielectric Loss Tangent
(x1.0E-4)
1MHz 24 6 4
2GHz - 6 13
Thermal
Characteristics
CTE (ppm/K)
(RT~400℃)
7.1 7.2 7.5
Thermal Conductivity (ppm/K)
(W/(m・K))
14 21 16
Mechanical
Characteristics
Flexural Strength (MPa) 400 620 740
Young's Modulus of Elasticity (GPa) 310 315 300
Conductor Material W,Mo Mo CuW,Mo
*The above material properties are representative values. These values are subject to change due to improvements or changes in materials or processes.
A440 is the most commonly used alumina material.
AO700 and AO800 are higher-strength materials compared to A440.

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