The 310 × 310 mm alumina ceramic heat sink plate is a high-performance thermal management component made from high-purity aluminum oxide (Al₂O₃). It is designed for applications requiring efficient heat dissipation, electrical insulation, and long-term stability under high temperature and high voltage environments.
Compared with metal heat sinks, alumina ceramic offers superior electrical insulation, excellent corrosion resistance, and stable performance in harsh operating conditions.
This large-format ceramic plate is suitable for power electronics, LED modules, semiconductor equipment fixtures, and precision industrial systems.
Các tính năng chính
- High thermal conductivity for efficient heat dissipation
- Excellent electrical insulation performance
- Độ bền cơ học cao và khả năng chống mài mòn tốt
- Stable performance under high temperature environments
- Good chemical and corrosion resistance
- Precision ground surface available for high-flatness applications
Các lựa chọn vật liệu
- 95% Al₂O₃ (Standard industrial grade)
- 96% Al₂O₃ (Improved mechanical strength option)
- 99% Al₂O₃ (High purity, enhanced insulation & thermal stability)
Thông số kỹ thuật
| Mặt hàng | Thông số kỹ thuật |
|---|---|
| Chất liệu | Gốm alumina (Al₂O₃) |
| Kích thước | 310 × 310 mm |
| Thickness | 0.5 – 10.0 mm (customizable) |
| Mật độ | 3,6 – 3,9 g/cm³ |
| Độ dẫn nhiệt | 20 – 30 W/m·K |
| Độ bền điện môi | ≥ 10 – 15 kV/mm |
| Volume Resistivity | ≥ 10¹⁴ Ω·cm |
| Độ bền uốn | ≥ 300 – 350 MPa |
| Độ cứng | ≥ 80 HRA |
| Độ nhám bề mặt | Ra ≤ 0.4 – 0.8 μm (ground surface option) |
| Flatness | ≤ 0.05 – 0.10 mm (depending on thickness) |
| Màu sắc | Ivory / White |
Ứng dụng
- LED high-power lighting modules
- Power semiconductor devices (IGBT, MOSFET cooling)
- RF and microwave equipment
- High-voltage insulation systems
- Industrial heat dissipation platforms
- Precision electronic assemblies
Các tùy chọn tùy chỉnh
- Size and thickness customization
- Surface polishing / lapping / metallization (Ag, Au, Ni plating support)
- Laser cutting and CNC machining
- Drilling and precision slotting
- High-flatness grade for optical/semiconductor use
Câu hỏi thường gặp (FAQ)
Q1: Is alumina ceramic better than aluminum for heat sink applications?
A: Alumina ceramic offers lower thermal conductivity than aluminum, but it provides superior electrical insulation, higher temperature resistance, and better corrosion stability. It is ideal for high-voltage and precision electronic environments where metal heat sinks may fail due to conductivity risks.
Q2: Can the 310 × 310 mm ceramic plate be customized into different shapes or hole patterns?
A: Yes. The alumina ceramic plate can be CNC machined, laser cut, drilled, or slotted according to design requirements. Custom geometries, mounting holes, and surface patterns are available for specific device integration needs.
Q3: Will the ceramic heat sink crack under high temperature or rapid temperature changes?
A: High-purity alumina ceramics have excellent thermal stability and can withstand high operating temperatures. However, like all ceramics, they are brittle under mechanical shock. Proper mounting design and controlled thermal cycling help ensure long-term reliability in practical applications.
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