Alumina Substrates

Alumina substrate has excellent thermal conductivity and insulation, as well as with high mechanical strength and hardness, good heat shock performance characteristics, widely used in power devices, hybrid integrated circuits and multi-chip modules and other fields.

Alumina ceramic metalized substrates are ceramic copper-clad plates with electrical conductivity, thermal conductivity, and high insulation properties, formed by metalizing alumina ceramic substrates with copper. The alumina metalized substrates can be processed through various techniques. When combined with the DBC (direct bond copper) process, they become DBC alumina ceramic copper-clad substrates. Similarly, when integrated with the DPC (direct plated copper) process, they transform into DPC alumina copper-clad substrates.

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Alumina Substrates

Properties of Al2O3 Substrates

1. Good smoothness, or flatness with less porosity, and excellent in adhesion with thin film and thick film materials.

2. Small variance in outline, plate thickness, and slit pitch, mininmal warpage, bending, and undulation.

3. Superior mechanical strength, good pressure and impact resistance, not easy to break or wear.

4. Excellent in thermal shock resistance, high thermal conductivity and coefficient of thermal expansion similar to that of silicon.

5. Excellent oil and chemical resistance.

6. Excellent in insulation properties, high breakdown voltage, and small dielectric constant.

ATCERA also provide Metalized Alumina Substrate:

1. The thermal expansion coefficient of DBC DPC alumina metalized substrates is close to that of silicon chips, eliminating the need for transition layers such as Mo sheets, thereby reducing material and processing costs.

2. DBC DPC alumina ceramic substrates reduce the number of solder layers, simplify packaging and assembly, lower thermal resistance, minimize voids, and enhance product yield.

3. Metalized alumina ceramic substrates exhibit excellent thermal conductivity and high current-carrying capacity, enabling compact chip packaging, significantly increasing power density, and improving the reliability of systems and devices.

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Technical Data Sheet

Specification of Aluminium Oxide Materials

Material	99% Alumina (AL2O3)
Thermal Conductivity	24.0w/m.k
Electrical Insulation	≤22.5KV, temperature resistance up to 1600℃
Density	3.83g/cm3
Thermal Expansion Coefficient	*710-6/℃**
Bending Strength (at room temperature)	310MPa
Compressive Strength (at room temperature)	2200MPa
Hardness (Hv)	1650
Fracture Toughness	*4.2MPam1/2**

*This chart illustrates the standard characteristics of the alumina materials commonly employed in the manufacturing of our alumina products and parts. Please be aware that the attributes of customized aluminum oxide products and parts may vary depending on the specific processes involved.

Main Applications of Alumina Substrates

Alumina substrates and plates are widely used in thick and thin film integrated circuits, LED lighting, IGBT power modules, DBC coppers, thermal printers, ozone generators, semiconductor coolers, crystal oscillators, high voltage resistors, automotive and power tools and other power electronics and optoelectronic communication fields,etc.

1. Electronic Industry

Alumina substrate has high insulation performance and excellent high temperature resistance, can meet the high reliability and high performance requirements of electronic components, mainly used in the manufacture of electronic components, such as electronic capacitors, resistors, magnetic components and so on. In addition, it can also be used to manufacture the medium layer of high-speed communication equipment to ensure the stable transmission of high-frequency signals.

2. Photoelectric Industry

Al2O3 substrates can provide good thermal performance and mechanical strength, and are widely used in the photoelectric industry, especially in the manufacture of high-power leds, ensuring the stability and life of LED components. In addition, it can also be used to manufacture support materials for solar panels to enhance their mechanical strength and chemical resistance.

3. Electrical Industry

Alumina ceramic substrate has excellent insulation performance and good heat dissipation, and can be used to manufacture various high-power electrical components, such as power modules, heating modules, etc., effectively ensuring the service life and reliability of electrical equipment.

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Customized Services

Process for Customized Request

⩟ Drawing and sample providing

⩟ Production solution and fabrication method evaluation

⩟ Cost calculation and quotation

⩟ Module cost payment

⩟ Sample delivery

⩟ Sample evaluation and confirmation

⩟ Down payment of bulk order

⩟ Mass production

⩟ Batch product delivery

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Why Choose Alumina Substrates From ATcera

Extensive Supplier Expertise

Over 20 years experience in the field of advanced industrial ceramics, ATCERA is able to provide professional technical support and the most optimized solution.

Sophisticated Production Infrastructure

Advanced processing equipment, and strict quality control system.

Assured Batch Supply

Stable production capacity and supply chain, batch delivery cab be well guaranteed.

Cost-Effective Excellence

High cost performance, and perfect after-sales service.

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FAQ

Do you supply the materials unlisted on your website?

Although our primary focus is on advanced ceramic materials such as alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and quartz ceramics, we are always exploring new materials and technologies. If you have a specific material requirement, please contact us, and we will do our best to fulfill your needs or find suitable partners.

Can you aid in material selection & ceramic product design?

Absolutely. Our technical team possesses profound knowledge of ceramic materials and extensive experience in product design. We are happy to provide you with material selection advice and product design support to ensure optimal performance for your products.

Do you have a minimum order value requirement?

We do not have a fixed minimum order value requirement. We always focus on meeting our customers' needs, and we strive to provide quality service and products regardless of the order size.

What services beyond ceramic products do you offer?

In addition to ceramic products, we also provide a range of additional services, including but not limited to: customized ceramic processing services based on your needs, using blanks or semi-finished blanks produced by yourself; if you are interested in outsourced ceramic packaging and metallization services, please contact us for further discussion. We are always committed to providing you with a one-stop solution to meet your various needs.

Do you offer international shipping services?

Yes, we do. No matter where you are located globally, we can ensure the safe and timely delivery of your order.

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