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High Purity Electronic Grade Spherical Alumina Powder

This product is high-purity electronic-grade spherical aluminum oxide powder (Al2O3), prepared by an advanced high-temperature melting spray method. It features excellent sphericity, high purity, and a narrow particle size distribution (D50 adjustable from 0.5 to 50μm). The product exhibits superior thermal conductivity, insulation, and chemical stability, making it widely used in high-end electronic packaging, semiconductors, 5G communications, and thermal interface materials.

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Product Description

 
 Product Description 
This product is high-purity electronic-grade spherical aluminum oxide powder (Al2O3), prepared by an advanced high-temperature melting spray method. It features excellent sphericity, high purity, and a narrow particle size distribution (D50 adjustable from 0.5 to 50μm). The product exhibits superior thermal conductivity, insulation, and chemical stability, making it widely used in high-end electronic packaging, semiconductors, 5G communications, and thermal interface materials. 

 Application Fields 
Semiconductor Packaging: Used for chip packaging and IC substrates to enhance heat dissipation performance. 
Thermal Interface Materials: A key filler for thermal silicone rubber and thermal pads. 
5G Communication Materials: Insulating and thermal conductive layers for high-frequency substrates and RF devices. 
LED Packaging: Improves the heat dissipation efficiency and reliability of LED devices. 
Precision Electronic Ceramics: Multilayer Ceramic Capacitors (MLCC) and electronic substrates. 

 Product Advantages 
High purity and low metal impurities, meeting stringent requirements. 
Perfect sphericity (≥95%): Good fluidity, high filling rate, and reduced internal stress in materials. 
Excellent thermal conductivity (30-35 W/m·K): Significantly enhances heat dissipation performance of electronic devices. 
Narrow particle size distribution: Customizable from 0.5 to 50μm to adapt to different application needs. 
High insulation: Stable dielectric constant, suitable for high-frequency electronic components. 

 Packaging and Storage 

Packaging: Customized according to customer requirements.
Storage: Store in a sealed container in a dry, cool place to avoid moisture.

 Why Choose Us? 
Strict quality control: Compliant with ISO 9001 & ROHS standards. 
Customized services: Surface modification and special particle size customization available. 
Stable supply: Monthly production capacity of 50 tons, supporting large-scale orders. 
Technical support: Professional application solutions and after-sales support provided. 

 Applicable Industry Standards 

Electronic Packaging: JIS K1469
Thermal Materials: ASTM D5470

 Contact Us: Get free samples and technical consultation! 

Project	Related indicators	Explain
Purity	A1.03	More than 99%
Impurities	Na,0	Can be as low as below 300ppm
Appearance	0-A1z03 content	Up to 90% or more
Particle Size Distribution	D50	Optional within 2um-50um
	Di₀0	Can be as low as 10um or less
	Particle size distribution	Adjustments can be made based on the typical distribution according to the requirements of the palace household, including multi-modal distribution and narrow distribution

Project	Unit	Typical values
Appearance	/	White pink wood
Particle Shaped Ni	/	Spherical
Density	kg/m³	3.7×103
Mohs Hardness	/	6-9
Dielectric Constant	Er	9
Dielectric Loss	lgδ	0.0003
Linear expansion coefficient	1/K	0.7x10-6
Thermal conductivity	W/Kam	30