Carbide substrate

DCBaluminum nitridefor the electronics industry

Product overview
High-performance ceramic substrates (including alumina (Al2O3), aluminum nitride (AlN), zirconia-toughened alumina (ZTA), silicon nitride (Si3N4), etc.) designed for power electronics, EV modules and high-voltage systems. Engineered to provide combined thermal management and electrical insulation solutions.

Why engineers select these substrates

• Efficient thermal management: high thermal conductivity removes heat from active devices and reduces junction temperature.
• Robust electrical insulation: high dielectric strength supports high-voltage operation and reduces leakage/breakdown risk.
• Mechanical reliability: high flexural strength and fracture toughness withstand vibration and thermal cycling.
• Long-term stability: chemically inert materials maintain performance in harsh industrial environments.

Materials handled (examples)

• Alumina (Al2O3)
• Aluminum nitride (AlN)
• Silicon nitride (Si3N4)
• Zirconia-toughened alumina (ZTA)
• Zirconia (ZrO2)
• Silicon carbide (SiC)
• Boron nitride (BN), sapphire, porous ceramics, machinable glass-ceramics, etc.

Material-specific notes
Alumina (Al2O3)
Cost-effective standard substrate with high stability, suitable for general power modules and industrial electronics.

Aluminum nitride (AlN)
High thermal conductivity and coefficient of thermal expansion (CTE) close to silicon; ideal for high heat-flux designs such as IGBT/MOSFET modules and EV inverters.

ZTA (zirconia-toughened alumina)
Improved fracture toughness and mechanical durability for environments requiring greater structural resistance.

Silicon nitride (Si3N4)
Balanced strength and thermal performance, appropriate for severe thermal cycling and automotive EV power modules.

Applications
Used in power electronics modules, EV inverters/converters, renewable energy systems, industrial motor drives, high-voltage power systems and RF/high-frequency equipment.

Custom manufacturing capabilities

• Precision machining and laser cutting
• Metallization (e.g., Mo/Mn), DBC compatibility
• Custom thickness, shapes and tight tolerance control
• Reliability-focused design support at system level

INNOVACERA strengths
Custom design and manufacturing that consider both material properties and production processes. Solutions aimed at reducing thermal risk and improving lifetime performance for high-power, high-voltage, high-reliability applications.

Frequently asked questions (summary)

• Which substrate is best for power electronics?: AlN and Si3N4 are commonly recommended for high thermal conductivity and mechanical strength.
• Difference between alumina and AlN?: AlN offers significantly higher thermal conductivity and a CTE closer to silicon.
• Can ceramic substrates withstand high voltage?: Yes. Their high dielectric strength suits high-voltage applications.

Features / Technical specifications

• Main materials: Al2O3, AlN, Si3N4, ZTA, ZrO2, SiC, etc.
• Key properties: high thermal conductivity (material-dependent), high dielectric strength, high flexural strength, chemical stability
• Surface treatments / additional processes: metallization (Mo/Mn, etc.), DBC compatibility
• Processing: precision machining, laser cutting, custom hole patterns, tight tolerance control
• Applications: EV power modules, industrial power electronics, high-voltage systems, RF equipment
• Custom options: thickness, shape, dimensional tolerances, reliability assessment from design stage