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Al2O3 ceramic substrate/plate

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The main performance parameters
Substrate material	Alumina ceramic plate/substrate
Purity	Alumina(Al2O3) 96%, 99% and 99.7%
Density (g/cm³)	>3.75
Thermal conductivity (w/m.k)	>24
Thermal expansion (x10 ^-6 / ℃)	6.5~7.5(20~300℃) 6.5~8.0(300~800℃)
Dielectric Strength (Kv/mm)	>17
Dielectric Constant (at 1MHZ)	9~10
Loss tangent (x10 ^-4 @1MHZ)	4
Flexural strength (N/mm² )	>350 Mpa
Water absorption	0 %
Other options	Silicon Nitride(Si3N4) ceramic, Zirconia(YSZ) ceramic, Aluminum Nitride(AlN) ceramic

Standard specifications
Product Name	Purity / Method	Size	Thickness	Polishing
Alumina Ceramic substrate	96% 99% 99.7%	114.3 x 114.3mm 101.6 x 101.6mm 100 x 100mm 76.2 x 76.2mm 50 x 50mm 10 x 10mm φ50.8mm φ100mm Or others	0.1mm 0.25mm 0.385mm 0.5mm 0.635mm 1.0mm 2.0mm Or others	Un-polished surface Single side polished Double side polished Unpolished: Ra 0.2~0.75um Polished: Ra 0.02~0.05um Best Polished: Ra <10 nm	Inquiry Online

Alumina ceramic substrate has lots of advantages, it has good thermal conductivity, stable insulation, thermal shock resistance, wear resistance, Anti-acid and Anti-alkali etc. Can be used in thick film hybrid integrated circuits HTC, LED ceramic heat sink, power modules, semiconductor devices and other fields. Commonly used ceramic substrates are Al2O3, AlN, SiC, BeO, BN, ZrO2 and glass ceramics. Although the thermal conductivity of Al2O3 ceramic substrate is not high (20W/m.K), it is the most widely used ceramic substrate because of its relatively simple production process, low cost and low price.

Application:

1) Thick film hybrid integrated circuit (HIC), mainly used in automotive and communication thick film circuits (communication, automotive).

2) Mold stamping sheet: It is mainly used for substrate for crystal oscillator, potentiometer, refrigerator and various types of shaped substrates, military and medical substrates,

3) Laser perforated sheet

4) Substrate for printer and semiconductor equipment: The largest size printer substrate we can provide is 380mm*100mm and the thickness is between 0.38-1.2.

96% alumina ceramic substrate has better wear resistance, insulation at normal temperature and high temperature, thermal shock resistance, chemical resistance .

99.6% alumina ceramic substrate has a higher thermal conductivity(about 28W/m·K) than 96% purity, can be used as a high-performance heat sink substrate.

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BIOTAIN CRYSTAL CO., LIMITED
Tel: (+86) 1506 0796 451
Fax: (+86) 0597 2212602
Email: sales@crystal-material.com
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Main office: A7, No. 501, Denggaoxi Road, Xipi street, Xinluo District, Longyan, Fujian, China

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Al2O3 ceramic substrate/plate

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