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Aluminum Nitride Ceramic Sheets
Aluminum nitride ceramic substrates are a new type of substrate material. The lattice constants of aluminum nitride crystals are a = 0.3110 nm and c = 0.4890 nm, with a hexagonal crystal structure. As a wurtzite-type covalent compound based on an aluminum nitride tetrahedral structural unit, it exhibits excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxicity, and a thermal expansion coefficient that matches that of silicon—among other outstanding properties. Consequently, it is regarded as an ideal material for next-generation high-integration semiconductor substrates and electronic packaging.
DETAILS
- 产品描述
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Product Features
- High insulation
- Shape stability
- High thermal conductivity
- Strong mechanical stress
- Strong bonding strength, corrosion resistance,
- Excellent thermal cycling performance
Aluminum nitride ceramic substrates represent a new class of substrate materials. The lattice constants of aluminum nitride crystals are a = 0.3110 nm and c = 0.4890 nm, with a hexagonal crystal structure; they are a wurtzite-type covalent compound based on tetrahedral AlN structural units. Aluminum nitride exhibits excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxicity, and a thermal expansion coefficient that matches that of silicon, among other outstanding properties. Consequently, it is regarded as an ideal material for next-generation high-integration semiconductor substrates and electronic packaging.
Technical Specifications for Aluminum Nitride Ceramic Substrates
Technical Indicators Unit Parameters Thermal conductivity (W/m·K) ≥170 Volume resistivity (Ω·cm) 1.5×10¹⁴ Dielectric constant [1 MHz, 25°C] 9 Dielectric loss [1 MHz, 25°C] 4.6×10⁻⁴ Dielectric strength (kV/mm) ≥15 Bulk density (g/cm³) ≥3.30 Surface roughness Ra (μm) 0.3~0.8 Coefficient of thermal expansion [20℃ to 300℃] (10⁻⁶/℃) 4.6 Flexural strength (MPa) 300~400 Elastic modulus (GPa) 310~320 Water absorption rate (%) 0 Warping degree (~/25 (length) 0.003~0.005 Melting point 2500 Appearance Color Grayish white
Application Fields
Communications field
Aerospace
Rail Transit
Household appliances
LED lighting
Aluminum Nitride Ceramic Sheets
Aluminum nitride ceramic substrates are a new type of substrate material. The lattice constants of aluminum nitride crystals are a = 0.3110 nm and c = 0.4890 nm, with a hexagonal crystal structure. As a wurtzite-type covalent compound based on an aluminum nitride tetrahedral structural unit, it exhibits excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxicity, and a thermal expansion coefficient that matches that of silicon—among other outstanding properties. Consequently, it is regarded as an ideal material for next-generation high-integration semiconductor substrates and electronic packaging.
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