Sheet aluminum nitride

insulatinghigh thermal conductivity

Innovacera’s Aluminum Nitride (AlN) Substrates deliver exceptional thermal conductivity, a thermal expansion coefficient closely matched to silicon, and excellent electrical insulation, making them an ideal choice for high-power electronic applications. With superior mechanical strength, high breakdown voltage, and outstanding thermal shock resistance, AlN substrates ensure reliable performance in demanding environments. Their precision machining capability and customizable specifications make them well-suited for IGBT power modules, high-power LEDs, and advanced heat dissipation components. - Features: - High thermal conductivity - Thermal expansion coefficient close to silicon wafer - High breakdown voltage - Application: - High power IGBT power module - High-power LED - High power heat sink Material Properties Table: Project | Test conditions | Unit | AN-170 | AN-200 | AN-230 ---|---|---|---|---|--- Material | – | – | AlN | AlN | AlN Appearance | – | – | Light blue | beige | beige Surface roughness | Ra | μm | 0.2~0.75 | 0.2~0.75 | 0.2~0.75 Density | – | g/cm³ | ≥3.3 | ≥3.3 | ≥3.3 Physical properties | Bending strength | 3-point bending resistance | MPa | ≥400 | ≥350 | ≥300 | Vickers hardness | Load 4.9 | GPa | ≥10 | ≥10 | ≥10 | Water absorption | – | % | – | – | – Thermal performance | Thermal conductivity | 25℃ | W/(m·k) | ≥170 | ≥200 | ≥230 | Linear thermal expansion coefficient | 25-500℃ | x10⁻⁶ mm/℃ | 4~6 | 4~6 | 4~6 | Thermal shock resistance | 800℃ | Time | ≥10 | ≥10 | ≥10 | Specific heat | – | J/(kg·K) | 720 | 720 | 720 Electrical properties | Dielectric constant | 1MHz/25℃ | – | 8~9 | 8~9 | 8~9 | Dielectric loss | 1MHz/25℃ | x10⁻⁴ | ≤3 | ≤3 | ≤3 | Volume resistivity | 25℃ | Ω·cm | > 10¹⁴ | > 10¹⁴ | > 10¹⁴ | Breakdown voltage | – | kV/mm | > 17 | > 17 | > 17 Light performance | Reflectivity | Reflectivity meter | – | – | – | – | Whiteness | Whiteness meter | – | – | – | – Specifications and Dimensions: Size (mm) / Thickness (mm) | 0.25 | 0.38 | 0.5 | 0.635 | 0.76 | 1.0 | 1.2 | 1.5 | 2.0 ---|---|---|---|---|---|---|---|---|--- 101.6*101.6 | √ | √ | √ | √ | √ | √ | √ | √ | √ 114.3*114.3 | √ | √ | √ | √ | √ | √ | √ | √ | √ 120*120 | √ | √ | √ | √ | √ | √ | √ | √ | √ 138*190 | | | √ | √ | √ | √ | √ | √ | √ - Processing: - Laser processing - Grinding and polishing sheet roughness table Project | Qualified | Special Grade ---|---|--- Internal dimension tolerance | ±0.05mm | ±0.03mm External dimension tolerance | ±0.15mm | ±0.1mm Hole tolerance (φ0.07-0.15mm) | ±0.05mm | ±0.02mm Hole tolerance (φ ＞ 0.15mm) | ±0.1mm | ±0.02mm Surface roughness (μm) | Qualified | Special Grade Grinding | 0.3-0.6 | 0.3-0.5 Fine grinding | 0.1-0.4 | 0.1-0.3 Polishing | ≤0.1 | ≤0.05 Technical Specifications / Characteristics: - Material: Aluminum Nitride (AlN) - Thermal conductivity: ≥170 to ≥230 W/(m·k) depending on grade - Thermal expansion coefficient: 4~6 x10⁻⁶ mm/℃ - Dielectric constant: 8~9 (1MHz/25℃) - Breakdown voltage: >17 kV/mm - Volume resistivity: >10¹⁴ Ω·cm - Density: ≥3.3 g/cm³ - Bending strength: ≥300 to ≥400 MPa - Vickers hardness: ≥10 GPa - Surface roughness: 0.2~0.75 μm (Ra) - Available sizes: 101.6x101.6 mm, 114.3x114.3 mm, 120x120 mm, 138x190 mm - Available thicknesses: 0.25, 0.38, 0.5, 0.635, 0.76, 1.0, 1.2, 1.5, 2.0 mm - Processing: Laser cutting, grinding, polishing