Alumina Ceramic Substrates Unmatched Insulation And Thermal Conductivity For High-End Applications
Alumina Ceramic Substrates Unmatched Insulation And Thermal Conductivity For High-End Applications
Product Overview
Alumina ceramic heat sink substrates are advanced electronic cooling materials manufactured from high-purity aluminum oxide (Al₂O₃). These substrates feature excellent thermal conductivity, electrical insulation, and mechanical strength. Utilizing cutting-edge ceramic processing technology, they offer superior surface flatness and thermal expansion coefficients that match semiconductor materials, making them ideal heat dissipation carriers for power electronic devices.
Key Applications
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LED Lighting: Heat sinks for high-power LED chips
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Power Electronics: IGBT modules and power semiconductor devices
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Telecom Equipment: 5G base station power amplifiers
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Automotive Electronics: New energy vehicle control systems
Product Advantages
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Exceptional Thermal Conductivity: 24-28W/(m·K)
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High Insulation Performance: Breakdown voltage >15kV/mm
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Low Thermal Expansion: Matches chip expansion (7.2×10⁻⁶/℃)
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High-Temperature Resistance: Continuous operation up to 1000℃
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Superior Mechanical Strength: Flexural strength >300MPa
Technical Specifications
| Parameter | Specification |
|---|---|
| Material Purity | 96%/99% Al₂O₃ options |
| Thermal Conductivity | 24-28W/(m·K) |
| Breakdown Voltage | >15kV/mm |
| Surface Roughness | Ra≤0.2μm |
| Thermal Expansion | 7.2×10⁻⁶/℃(20-300℃) |
| Standard Sizes | 50×50mm to 150×150mm |
| Thickness Range | 0.3-3.0mm |
Manufacturing Process
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Powder Preparation: Fine grinding of high-purity alumina
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Tape Casting: Producing high-precision green tapes
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High-Temp Sintering: 1600-1700℃ densification
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Precision Machining: Laser cutting, surface polishing
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Metallization: Screen printing/sputtering
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Quality Control: Thermal/insulation testing
Usage Guidelines
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Maintain clean surfaces during installation
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Use thermal paste for better heat transfer
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Avoid mechanical impacts to prevent cracking
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Regularly inspect surface conditions
Service Commitment
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18-month quality guarantee
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Professional technical support
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Rapid response to inquiries
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Sample testing and small-batch customization
FAQ
Q: Advantages vs aluminum substrates?
A: Better insulation, heat resistance, and dimensional stability
Q: Minimum achievable thickness?
A: 0.3mm (0.5mm recommended)
Q: Custom shapes available?
A: Yes, with minimum 0.5mm hole diameter
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.