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Aluminum Nitride (AlN) ceramics are widely considered the premier substrate material for high-power Insulated Gate Bipolar Transistor (IGBT) modules, offering high thermal conductivity, electrical insulation, and a coefficient of thermal expansion (CTE) that closely matches silicon. They are critical for managing heat in advanced power electronics, particularly in electric vehicle (EV) inverters, rail traction, and renewable energy converters.

High Thermal Conductivity: AlN substrates typically feature high thermal conductivity ranging from 170 to over 200 W/mK, significantly higher than conventional Alumina (
$cap A l sub 2 cap O sub 3$
), allowing for superior heat dissipation in compact, high-power devices.
Coefficient of Thermal Expansion (CTE) Match: With a CTE of 4 to
, AlN closely matches silicon (approx.
), reducing thermal stress during high-temperature operations.
Electrical Insulation: AlN provides high electrical resistivity (
) and strong dielectric strength (43–53 kV/mm), crucial for insulating high-voltage components.
Mechanical Properties: While brittle, AlN offers high flexural strength (400–550 MPa), which can be improved in thin substrates for higher reliability in, for example, ultrasonic copper welding processes.

High-Power Modules: Used as submounts and substrates in high-density, high-voltage IGBT modules to prevent overheating.
Automotive Power Electronics: Critical for electric vehicle main drive inverters and battery management systems (BMS).
Direct Copper Bonding (DCB/AMB): AlN is commonly processed using Active Metal Brazing (AMB) or Direct Copper Bonding (DBC) to create copper-clad laminates, providing high electrical conductivity combined with ceramic insulation.
Miniaturization: The high thermal efficiency enables smaller, more compact IGBT designs.

Advantage: Significantly improved heat dissipation compared to traditional
$cap A l sub 2 cap O sub 3$
substrates, improving the efficiency and lifespan of high-power IGBTs.
Advantage: Excellent reliability under extreme temperature cycling.
Challenge: Higher cost compared to Alumina (
$cap A l sub 2 cap O sub 3$
).
Challenge: Brittleness requires careful handling and specialized manufacturing techniques (e.g., in ultrasonic welding).

Constructing a heterogeneous interlayer in relieving the ...
Recently, the aluminum nitride (AlN) ceramic is considered as the promising substrate material used in IGBT, due to its excellent ...
ScienceDirect.com
High Power IGBT Module with New AlN Substrate - IEEE Xplore
Aluminum Nitride (AlN) Ceramic Substrates for Efficient IGBT Module ...
Dec 15, 2025 — For this reason, AlN-DBC has become the preferred solution for advanced applications such as electric vehicle main drive inverters...
innovacera
Aluminum Nitride (AlN) Ceramics
We supply aluminum nitride ceramics products with excellent specifications and competitive prices. * Aluminum Nitride Ceramic Prop...
www.eticeramics.com
Metalization Ceramic
Metalization Ceramic * AMB ceramic substrate for Power Modules. AMB(Active Metal Brazing Substrate) is the further development of ...
Fujian Huaqing Electronic Material Technology Co.,Ltd
High Power IGBT Module with New AlN Substrate - IEEE Xplore
These days, some high power IGBT modules apply ultrasonic welded Cu terminal instead of soldering. Because the welded Cu interface...
IEEE

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5.5×7.5inch Aluminum Nitride Ceramic Used for IGBT module ...

huaqingcn.com

https://www.huaqingcn.com › aluminum-nitride-ceramic...

huaqingcn.com

https://www.huaqingcn.com › aluminum-nitride-ceramic...

Our Aluminum Nitride(AlN) Ceramic Substrate is an excellent material to use if you require high thermal conductivity and electrical insulation properties.

High Power IGBT Module with New AlN Substrate

IEEE

https://ieeexplore.ieee.org › document

IEEE

https://ieeexplore.ieee.org › document

by H Nogawa2016Cited by 7 — To apply new thin AlN insulated substrates to the high power IGBT module, we developed thin AlN ceramic substrate with high strength for higher reliability in ...Read more

AlN Substrate Ceramic: Everything You Should Know

bstceramicpcb.com

https://www.bstceramicpcb.com › industry-knowledge

bstceramicpcb.com

https://www.bstceramicpcb.com › industry-knowledge

An AlN substrate is a ceramic base material made from Aluminum Nitride, designed for electronic circuits that demand both thermal and electrical performance ...

Aluminum Nitride Ceramic

Edgetech Industries

https://www.edge-techind.com › category › Aluminum-...

Edgetech Industries

https://www.edge-techind.com › category › Aluminum-...

Aluminum nitride (AlN) ceramics have a series of excellent properties, including excellent thermal conductivity, reliable electrical insulation, ...

Constructing a heterogeneous interlayer in relieving the ...

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

by C Lu2023Cited by 39 — Recently, the aluminum nitride (AlN) ceramic is considered as the promising substrate material used in IGBT, due to its excellent thermal conductivity and low ...Read more

AMB Ceramic Substrate for IGBT Modules | Edgetech Industries

eticeramics.com

https://www.eticeramics.com › products › amb-ceramic-s...

eticeramics.com

https://www.eticeramics.com › products › amb-ceramic-s...

Edgetech Industries, Advanced Ceramics Division supplies high-quality Active Metal Brazing (AMB) Ceramic Substrate for IGBT Modules at competitive price.

Aluminum nitride substrate - AlN - CERcuits - Ceramic PCB

ceramic-pcb.com

https://ceramic-pcb.com › Bare substrates

ceramic-pcb.com

https://ceramic-pcb.com › Bare substrates

Aluminum Nitride (AlN) is the best available thermally conductive material (170 W/mK) that is also a strong electric insulator. Click here to buy online.

€45.00 to €210.00

Revolutionizing IGBT Module Applications in Power Electronics

Shaanxi Puwei Electronic Technology Co., Ltd

https://www.pwceramic.com › Industry News

Shaanxi Puwei Electronic Technology Co., Ltd

https://www.pwceramic.com › Industry News

AlN ceramics possess high electrical insulation characteristics, ensuring minimal leakage current and providing reliable isolation between different electrical ...

How to Protect IGBT from Heat: Ceramic PCB for IGBT Module

pcbonline.com

https://www.pcbonline.com › blog › ceramic-pcb-for-igb...

pcbonline.com

https://www.pcbonline.com › blog › ceramic-pcb-for-igb...

Jul 12, 2021 — Ceramic PCBs are used for IGBT packaging to protect the chip from overheating. Alumina PCBs, AlN PCBs, and SiC PCBs are used for the thermal ...

Reliability of AlN substrates and their solder joints in IGBT ...

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

ScienceDirect.com

https://www.sciencedirect.com › article › abs › pii

by G Mitic1999Cited by 77 — The paper presents experimental and numerical results on different test vehicles with a number of DCB substrates with AlN ceramic and different copper ...Read more

Scholarly articles for IGBT AlN ceramics
High Power IGBT Module with New AlN Substrate - ‎Nogawa - Cited by 7 … of AlN substrates and their solder joints in IGBT power … - ‎Mitic - Cited by 77

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Web results

5.5×7.5inch Aluminum Nitride Ceramic Used for IGBT module ...

High Power IGBT Module with New AlN Substrate

AlN Substrate Ceramic: Everything You Should Know

Aluminum Nitride Ceramic

Constructing a heterogeneous interlayer in relieving the ...

AMB Ceramic Substrate for IGBT Modules | Edgetech Industries

Aluminum nitride substrate - AlN - CERcuits - Ceramic PCB

Revolutionizing IGBT Module Applications in Power Electronics

How to Protect IGBT from Heat: Ceramic PCB for IGBT Module

Reliability of AlN substrates and their solder joints in IGBT ...

Scholarly articles for IGBT AlN ceramics

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