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Aluminum Nitride Products

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The Aluminium Nitride product is a new material having such characteristics as superior thermal conductivity, high electric insulation, and coefficient of thermal expansion similar to that of silicon (Si) and is drawing attention as a next-generation material with high thermal conductivity.

• High thermal conductivity about 7 times that of Alumina
• Having coefficient of thermal expansion similar to that of silicon, it realizes a high
reliability against installation of a large Si chip and heat cycle
• High electric insulation, and low dielectric constant
• Mechanical strength higher than that of Alumina
• Superior corrosion resistance against molten metal
• Very small content of impurities, no toxicity, high purity.

Board, general tolerance
Item
Sheet formed product
Press molded product
Dimension
Max. 5"x7"
Max. 2"x2"
Thickness
0.5~1.5
(as fired)
0.3~1.0
(lapped)
1~8 mm
Dimensional tolerance
±1%NLT
±0.1 mm
±1%NLT
±0.1 mm
Thickness tolerance *
±10%
±10%
Warp tolerance **
≤0.003mm/mm
≤0.003mm/mm
*Thickness tolerance of both-side polished product : ±0.05 mm
** Warp of both-sided polished product: ±0.0015 mm/mm
Thermal Conductivity
Coefficient of thermal expansion
Physical properties (principal values)
Characteristic value
Unit
Sheet formed product
Press molded product
Density
g/cm3
3.3
3.3
Thermal conductivty
W/m•k (R.T.)
170
160
Coefficient of thermal expansion
x10-6/ºC (R.T.~400ºC)
4.6
4.6
Dielectric strength
KV/mm (R.T.)
15
15
Volume resistivity
Ω•cm (R. T.)
1014
1014
Dielectric constant
1MHz (R.T.)
9.0
9.0
Bending strength
MPa (R.T.)
450
300
Application

•   Power transistor module board
•   High-frequency device board
•   Radiating/insulating plate for thyristor
•   Mount board for semiconductor laser and light emission diode
•   Hybrid module, ignition module
•   IC package
•   Thermo-module board
•   Parts of semiconductor manufacturing equipment

Power Module