Low dielectric loss tangent ceramics for high frequency applications

Low dielectric loss ceramics for high frequency applications

Features 

  • N-99DLT (Low dielectric loss tangent Alumina ceramics) has Low dielectric loss tangent (10-4) in GHz or MHz band.
  • Variety of  Low dielectric constant type(ε), low dielectric loss tangent type, stronger type, etc.
  • We can produce simple shape parts such as plates, but also small and complex shape parts. Moreover, we can supply it as filler.

Applications 

  • Parts for Plasma process like etcher, CVD process
  • 5G Mobile communication devices 
  • Aerospace industries, Rader, Microwave, etc.
  • Medical market
  • Parts for high-frequency board with high heat resistance and high durability, Parts for antennas, RF Windows, Parts for semiconductor manufacturing equipment

Properties 

Products No. N-99DLT N-999DLT N-75 N-600
Materials Alumina
(Aℓ2O399.7%)
Alumina
(Aℓ2O399.9%)
Forsterite Cordierite
Bulk desity g/cm3 3.93 3.95 3.0 2.5
Water adsorption 0 0 0 0
Flexural Strength MPa 289 348 150 150
Young’s module GPa 388 392
Linear expansion
coefficient(30~300℃)
×10-6/℃     8.97 0.98
Volume resistivity Ω・cm > 1016 > 1016 > 1013 > 1014
Dielectric constant ε 1MHz 6.5 4.9
1GHz 9.5 9.6 6.6 4.8
5GHz 9.5 9.6 6.7 4.8
10GHz 9.5 9.6 6.6 4.7
Dielectric loss tanδ
(×10-4)
1MHz 3.0 9.0
1GHz 0.7 0.7 2.3 28
5GHz 1.1 1.0 4.7 24
10GHz 2.7 2.5 4.1 23
Symbols used in the graph below

※The above numbers are only representative values and not guaranteed value.

Graph1 Relative permittivity(ε), and Dielectric loss (tanδ) of each ceramics in 1-10GHz.

 

Related pages

Properties comparison list : Compare by dielectric constant

Material list

 

For inquiries and further information:

Nishimura Porcelain Co., Ltd.
npc-e3@nishimuratougyou.co.jp 
Please feel free to contact us on any matters concerning industrial ceramics.
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