Silicon nitride ceramic substrate processing manufacturer

---

Q: Why does my power module always fail in high temperature, high humidity, or high vibration environments? Is there a material that can conduct heat, insulate, and withstand extreme working conditions?
A: Silicon nitride (Si ∝ N ₄) ceramic substrates are designed to solve such problems. It combines high thermal conductivity (70-90 W/m · K), excellent mechanical strength (flexural strength>800 MPa), low thermal expansion coefficient (≈ 3.2 × 10 ⁻⁶/K), and outstanding electrical insulation performance, and is widely used in fields such as new energy vehicles, rail transit, photovoltaic inverters, industrial power supplies, etc. that require high reliability. Choosing a professional silicon nitride ceramic substrate processing manufacturer means you will obtain a stable, efficient, and long-lasting electronic packaging foundation platform.

Product application: Empowering high-end power electronics systems
Silicon nitride ceramic substrate, as a key material for third-generation semiconductor packaging, has been deeply integrated into the following high-tech scenarios:
-New energy vehicles: DBC (direct bonding copper) or AMB (active metal brazing) substrates for SiC/GaN power modules, supporting 800V high-voltage platforms;
-Rail transit: IGBT modules in traction inverters need to withstand long-term vibration and temperature cycling;
-Photovoltaic and energy storage inverters: improve system efficiency and thermal management capabilities, and extend equipment lifespan;
-Industrial motor drive and high-frequency power supply: meet the dual requirements of heat dissipation and insulation at high switching frequencies.

Core strengths
Thermal conductivity (W/m · K): 70-90
Bending strength (MPa): 800-1000
Fracture toughness (MPa · m ¹/²): 6-8
Thermal expansion coefficient (× 10 ⁻⁶/K):~3.2
Key conclusion: Although aluminum nitride has higher thermal conductivity, its brittleness, high cost, and reliability are questionable; Silicon nitride achieves the best balance between comprehensive mechanical properties and thermal management capabilities, making it particularly suitable for dynamic loads and harsh environments.

Customized services: flexibly meet diverse engineering needs
We provide full chain silicon nitride ceramic substrate processing services, supporting:
-Size customization: Standard sizes such as 32 × 32mm, 50 × 50mm, 100 × 140mm, can also be processed up to a maximum of 150 × 150mm according to the drawing;
-Thickness range: 0.25mm, 0.38mm, 0.5mm, 0.635mm, 1.0mm, and other multiple options are available;
-Metalization process: supports DBC (copper thickness 100-300 μ m), AMB (copper or silver layer), and can be used for graphic etching;
-Surface treatment: integrated completion of subsequent processes such as polishing, sandblasting, laser marking, edge chamfering, etc;

What key issues are being addressed?

1. Thermal failure problem: High thermal conductivity effectively reduces chip junction temperature and increases power density;
2. Mechanical fracture risk: ultra-high fracture toughness to resist thermal stress and vibration impact;
3. Hidden dangers of insulation failure: volume resistivity>10 ¹⁴Ω· cm, withstand voltage>15 kV/mm;
4. CTE mismatch cracking: The thermal expansion coefficient is close to that of Si and SiC chips, reducing welding interface fatigue;

Customer Application Case (Anonymous)
-Case 1: A leading domestic electric drive enterprise uses our 0.38mm thick AMB silicon nitride substrate for 800V SiC inverters, reducing thermal resistance by 22% and increasing module life by 40%;
-Case 2: European rail transit suppliers imported 50 × 50mm DBC silicon nitride substrates, which showed no delamination after 5000 cycles of thermal shock at -40 ℃~150 ℃;
-Case 3: The photovoltaic inverter manufacturer replaced the original AlN substrate with Si ∝ N ₄ solution, resulting in a cost reduction of 18% and an increase in yield to 99.2%.

If you are looking for the ideal ceramic substrate solution for high-power, high reliability electronic systems, please feel free to contact us for free samples and customized technical solutions!

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.