High Thermal Conductivity Superior Insulation Low Thermal Expansion High-Temperature Resistance Exceptional Flatness

High Thermal Conductivity Superior Insulation Low Thermal Expansion High-Temperature Resistance Exceptional Flatness

Product Introduction

Alumina ceramic substrates are electronic ceramic base plates manufactured from high-purity alumina (Al₂O₃ content 96%-99.9%), featuring excellent insulation properties, high thermal conductivity and low dielectric loss. With precision-polished surfaces achieving roughness below Ra 0.1μm, these substrates are ideal for high-end applications including power electronic devices, LED packaging, and semiconductor modules.

Primary Applications

• Power Electronics: IGBT module substrates, power MOSFET heat dissipation bases

• LED Lighting: High-power LED chip packaging substrates

• Semiconductors: RF/microwave circuit substrates, MEMS device carriers

• Automotive Electronics: New energy vehicle electronic control system heat sinks

• 5G Communications: Base station power amplifier heat dissipation substrates

Key Advantages

✅ High Thermal Conductivity: 24-30W/(m·K), 10× better than standard PCB materials
✅ Superior Insulation: Volume resistivity >10¹⁴Ω·cm
✅ Low Thermal Expansion: 7.2×10⁻⁶/℃, excellent match with silicon wafers
✅ High-Temperature Resistance: Continuous operation up to 850℃
✅ Exceptional Flatness: ≤0.02mm/50mm surface flatness

Technical Specifications

Manufacturing Process

1. Powder Preparation: High-purity alumina powder (D50≤1μm)

2. Tape Casting: Precise slurry viscosity and thickness control

3. Isostatic Pressing: 200MPa high-pressure densification

4. High-Temp Sintering: 1600℃ atmosphere-protected sintering

5. Precision Machining: Double-side grinding + laser cutting

6. Surface Treatment: Chemical mechanical polishing (CMP)

7. Full Inspection: Automated optical inspection (AOI)

Usage Guidelines

⚠ Installation Notes:

• Recommended soldering temperature <300℃

• Avoid mechanical impact and localized stress concentration

• Storage humidity should be <60% RH

• Consider CTE matching when assembling with other materials

• Recommend using silver paste or AuSn solder for mounting

Service Commitment

• Technical Support: Thermal simulation analysis services

• Rapid Response: 72-hour expedited delivery for standard sizes

• Customization: Special shapes and metallization treatments available

• Failure Analysis: Equipped with SEM+EDS testing equipment

Technical FAQ

Q: How to select proper substrate thickness?
A: 0.63mm recommended for general power devices, ≥1.0mm for high-power applications

Q: Is multilayer wiring possible?
A: LTCC multilayer co-fired substrate solutions available

Q: What metallization options exist?
A: Supports thick-film printing, thin-film sputtering, DBC and other processes

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.