Aluminium Nitride

Aluminium Nitride Features & Benefits

Aluminium Nitride is a high purity ceramic with superior microstructural and chemical uniformity resulting in very consistent properties. It is manufactured with tightly distributed thermal and electrical properties that provide reliable performance in a variety of applications. AlN can be readily metallized and has been qualified by major users in high power and high frequency microelectronic packages as a cost-effective alternative to beryllia.

Aluminium Nitride Properties

Aluminium Nitride has excellent thermal conductivity, eight times higher than alumina and approaching beryllia at higher temperatures. It offers thermal expansion match to silicon and dielectric loss can be modified for specific customer applications.

Aluminium Nitride offers excellent resistance to wafer processing gases and plasma erosion.
Aluminium Nitride components can be custom fabricated as thin substrates or large structural shapes. Dielectric loss can be modified for specific applications.

Markets & Applications

Aluminium Nitride is the material of choice for a variety of high performance applications in markets worldwide as outlined here.

Power Semiconductor Devices

Ideal substrate for Direct Bond Copper and Active Metal Braze, metallization, power transistors, high power electric transformers, and more.

RF/Microwave Components

RF/Microwave- Active and passive power devices with thermal management needs

Cable Television – Digital amps, amp doublers. Replaces beryllium oxide and eliminates disposal hazard.

Opto-Electronics

High power and high frequency microelectronic packages and others requiring superior heat dissipation.

Laser diode sub-mounts. Optical switches.

Aluminium Nitride & Alumina

Property
Units
AlN
Alumina (99.5%)
 

Thermal Conductivity

W/m°K
170
190
36
 

Electrical Resistivity

ohm-cm
1014
1014
Dielectric Constant
RT – 1 MHz
8.9
9.8
 

Dielectric Loss

RT – 1MHz
0.0001-0.001
0.0002
 

Coefficient of
Thermal Expansion

10-6/°C
(RT – 400°C)
4.6
8.2
Density
g/cm3
3.30
3.89
 

 

Bending Strength

MPa
290
380
Hardness (Knoop)
GPa
11.8
14.1
 

 

Youngs Modulus

GPa
331
372

The sizes available are – 2″ X 2″ & 4″ X 4″ in 0.015″, 0.020″, 0.025″, & 0.040″ thickness.


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