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Alumina is widely used in various technical applications due to its excellent characteristics. Alumina substrates which Leatec provides are produced with high quality raw materials and strick quality control system.
For specific type, these alumina ceramics feature a variety of properties:
 .png) Good mechanical strength
Good heat conductivity and fire resistance
Good corrosion and wear resistance
Very good electric insulation |
The alumina substrates also possess several unique features:
Good surface with high smoothness/flatness and less porosity
High resistance to heat shock
Low warpage and camber
Stable in very high temperature and corrosive chemical
Very stable breaking strength and shape/dimension variance
Characteristics of Material:
|
Item |
Material |
96%Al2O3 |
|
Appearance |
- |
White |
|
Bulk Density |
g/c.c. |
>3.72 |
|
Grain Size Average |
μm |
3~4 |
|
Water Absorption |
- |
Nil |
|
Thermal Characteristics |
Thermal Conductivity |
W/mk |
24 |
|
Coefficient of Linear Thermal Expansion |
×10-6/℃RT~800℃ |
8.0 |
|
Electrical Characteristics |
Dielectric Strength |
KV/mm |
15 |
|
Volume Resistivity |
Ohm．cm |
>1014 |
|
Dielectric Constant |
1MHz |
9.8 |
|
Dielectric Loss Angle |
1MHz(×10-4) |
3 |
|
Mechanical Characteristics |
Flexure Strength |
Mpa |
>350 |
|
Surface Morphology |
96%Al2O3
 |
|
The presented value are typical material properties and were determined for test samples and follow testing standard. It may vary according to production configuration and manufacturing process. It do not a guarantee for certain properties. Leatec reserve the right to make technical changes.
Chip Resistor Substrate:
Applications:
Thick and thin film chip resistors substrate and resistor arrays substrate
High dissipated ceramic circuit board for LED
Power module for the automotive industry
RF modules
General Dimensional Specification:
Substrate for Chip Resistors
|
Chip Resistor size |
Part No. |
Dimension |
Thickness |
Unit Size |
|
L*W(mm) |
(mm) |
L*W(mm) |
|
2512 |
CRM180 |
70.00×60.00 |
0.50±0.05 |
6.30×3.10 |
|
70.00×60.00 |
0.635±0.05 |
6.30×3.10 |
|
2010 |
CRM312 |
70.00×60.00 |
0.50±0.05 |
4.90×2.40 |
|
70.00×60.00 |
0.635±0.05 |
4.90×2.40 |
|
1812 |
CRM270 |
70.00×60.00 |
0.50±0.05 |
4.40×3.15 |
|
1218 |
CRM264 |
70.00×60.00 |
0.50±0.05 |
3.00×4.50 |
|
1210 |
CRM506 |
70.00×60.00 |
0.50±0.05 |
3.00×2.50 |
|
1206 |
CR0874 |
69.46×60.00 |
0.50±0.04 |
3.02×1.49 |
|
69.46×60.00 |
0.635±0.04 |
3.02×1.49 |
|
0612 |
CR0792 |
70.00×60.00 |
0.50±0.05 |
1.49×3.02 |
|
0805 |
CR1598 |
70.00×60.00 |
0.50±0.04 |
1.94×1.21 |
|
0603 |
CR3080 |
70.00×60.00 |
0.40±0.04 |
1.50×0.80 |
|
0402 |
CR7910 |
70.00×60.00 |
0.28±0.03 |
0.95×0.48 |
|
0201 |
HR7465 |
74.00×65.00 |
0.20±0.02 |
withoutpunch |
|
01005 |
HR7060 |
70.00×60.00 |
0.10±0.01 |
withoutpunch |
Substrate for Resistor Arrays
|
Resistor Array size |
Part No. |
Dimension |
Thickness |
Unit Size |
|
L*W(mm) |
(mm) |
L*W(mm) |
|
0603×4 |
CA504A |
60×49.5 |
0.50±0.05 |
1.50×3.20 |
|
0603×8 |
CA429B |
60×49.5 |
0.50±0.05 |
1.50×3.20 |
|
0402×4 |
CA1276 |
60×49.5 |
0.40±0.04 |
0.92×2.0 |
|
