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alumina nitride ceramic pcb quality

Custom AlN Aluminum Nitride Ceramic Substrates Sheets Plates

Custom AlN Aluminum Nitride Ceramic Substrates Sheets Plates

Aluminum Nitride (AlN) has excellent electrical insulation and high thermal conductivity, is thus considered as high performance electronic packaging material. UNIPRETEC offers a series of substrates based on AlN materials for use in various application environments.

  • Material : AlN Ceramic
  • Color : Grey
  • Density : 3.30 g/cm3
  • Thermal Conductivity : > 180 W/m.K
  • Max. Service Temperature : 1,200 degree C
  • Typical Advantages : High Thermal Conductivity

Material Description of AlN Substrates

When it comes to providing good thermal conductivity and high electrical insulation features, aluminum nitride substrate is a superb option because of its efficacy. Aluminum nitride sheets are widely used in the semiconductor application industry instead of beryllium oxide (BeO) since aluminium nitride is non-toxic and does not produce dangerous vapors when grinded and machined. Aluminum nitride ceramic substrate has a thermal expansion and isolation coefficient which closely matches the silicon wafer product, making it useful in applications in electronics that often have high temperatures and heat dissipation problems.

Features and Properties of AlN Plates

√ Small Dielectric Constant√ Good Mechanical Strength √ High Thermal Conductivity√ Good Smoothness / Flatness √ Excellent in Electrical Insulation√ Excellent in Thermal Shock Resistance √ Thermal Expansion Coefficient Similar to Silicon√ Excellent Resistance against Oil, Acid and Alkali

ITEMUNITALN
Main Content-AlN> 95%
Densityg/cm 3> 3.3
ColorGrey
Water Absorption%0
Warpage< 2‰
Standard Surface Roughness (Ra)um0.3 - 0.6
Flexural StrengthMpa440
Thermal Conductivity (25 °C)W/m.K> 175
Thermal Expansion Coefficient (25 - 300 °C)10-6 mm/°C2 - 3
Thermal Expansion Coefficient (300 - 800 °C)10-6 mm/°C2.5 - 3.5
Max. Working Temperature°C / °F1,200 / 2,190
Dielectric StrengthKV/mm> 17
Dielectric Constant 1 MHz17
Electrical Resistivity (25 °C)Ω·cm> 10 14

∆ The data is offered for reference only, exact data will vary depending on producing method and part configuration.

Properties Comparison : Thermal Conductivity
Properties Comparison : Coeffecient of Thermal Expansion
Standard Dimensions and Tolerance
Length and WidthThicknessTolerance (Thickness)
110mm x 110mm (4.3" x 4.3")0.25mm (0.010")±0.03mm(<1.0mm)
114mm x 114mm (4.5" x 4.5")0.38mm (0.015")±0.05mm(1.0mm - 1.5mm)
120mm x 120mm (4.7" x 4.7")0.50mm (0.020")±0.07mm(>1.5mm)
127mm x 127mm (5.0" x 5.0")0.63mm (0.250")±0.10mm(>2.0mm)
130mm x 140mm (5.1" x 5.5")0.76mm (0.030")
109mm x 130mm (4.3" x 5.1")1.00mm (0.390")Tolerance (Length and Width)
190mm x 140mm (7.5" x 5.5")2.00mm (0.790")+0.25mm/-0.05mm

∆ Customized dimensions are available. Laser cutting service can be provided and make customized shapes and holes.

Surface Roughness of AlN Ceramic Substrates

All substrates are grinded with surface roughness Ra0.3-0.6. We can also do surface polishing, one-side polishing or double-side polishing with surface roughness Ra0.02-0.05.

Applications of Aluminum Nitride Substrates

● LED Packages● Power Modules ● Wafer Bonding● Heat Dissipation Substrate ● Substrate for Chip Resistors● HIC Substrate/Plate for Heat Dissipation ● FAX Substrates for Thermal Printer Head● ...More

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