99.6% Aluminum Oxide Al2O3 Ceramic Alumina Thin film Substrate for Electronic Industry

Product Description

99.6% Aluminum Oxide Al2O3 Ceramic Plate Alumina Substrate for Electronic Industry

Product Introduction

Characteristics of Alumina Substrates

1. High Wear & Chemical Resistance

2. Heat Resistant

3. High Mechanical Strength

4. Small Dielectric Loss

5. Low Coefficient of Thermal Expansion (CTE)

6. High Light Reflection

7. 0% Water Absorption

Introduction of Alumina Substrates

The ceramic substrate material is widely used in electronic packaging substrate for its advantages such as high strength, good insulation, good thermal conductivity and heat resistance, small thermal expansion coefficient (CTE) and good chemical stability.

Alumina ceramics are in a dominant position in the fields of microelectronics, power electronics, hybrid microelectronics, and power modules due to their superior comprehensive performance, and are widely used.
 

99.6% Alumina Substrate
Item	Unit		99.6% Al2O3
Mechanical Properties
Color	/	/	Ivory
Density	Drainage Method	g/cm^3	≥3.95
Light Reflectivity	400nm/1mm	%	83
Flexural Strength	Three Point Bending	MPa	>500
Fracture Toughness	Indentation Method	MPa·m^1/2	3.0
Vickers Hardness	Load 4.9N	GPa	16
Young's Modulus	Stretching Method	GPa	300
Water Absorption		%	0
Camber	/	Length‰	≤3‰
Thermal Properties
Max. Service Temperature (Non-loading)	/	ºC	1400
CTE (Coefficient of Thermal Expansion)	20-800ºC	1×10^-6/ºC	7.9
Thermal Conductivity	25ºC	W/m·K	>29
Thermal Shock Resistance	800ºC	≥10 Times	No Crack
Specific Heat	25ºC	J/kg·k	780
Electrical Properties
Dielectric Constant	25ºC, 1MHz	/	9.8
Dielectric Loss Angle	25ºC, 1MHz	×10^-4	≤2
Volume Resistivity	25ºC	Ω·cm	≥10^14
Dielectric Strength	DC	KV/mm	≥15

Manufacturing Capacity

1. Product Specification

We can make various specifications. The table below shows our standard sizes.

99.6% Alumina Substrate
Thickness (mm)	Maximum Size (mm)			Shape			Forming Process
	As Fired	Lapped	Polished	Rectangular	Square	Round
0.1-0.2		50.8	50.8		√	√	Tape Casting
0.25		114.3	114.3		√		Tape Casting
0.38	120	114.3	114.3		√		Tape Casting
0.5	120	114.3	114.3		√		Tape Casting
0.635	120	114.3	114.3		√		Tape Casting
Other special thicknesses within the thickness range of 0.1-0.635mm can be achieved by lapping.

2. Product Tolerances
 

99.6% Alumina Substrate
Item	Substrate Thickness (mm)	Standard Tolerance (mm)	Best Tolerance (mm)	Laser Cutting Tolerance (mm)
Length and Width Tolerance	/	±2		±0.15
Thickness Tolerance	T<0.3	±0.03	±0.01
	0.30-1.0	±0.05	±0.01
	T>1.0	±10%	±0.01

3. Surface Roughness
 

99.6% Alumina Substrate
Surface Roughness (μm)
As Fired	Lapped	Polished
Ra 0.05-0.15	Ra 0.1-0.5	Ra ≤0.05

4. Laser Processing

(1) Hole Size
 

99.6% Alumina Substrate
Hole Diameter (mm)	Standard Tolerance (mm)
φ≤0.5	0.08
φ>0.5	0.2

(2) Laser Scribing
 

99.6% Alumina Substrate
Substrate Thickness (mm)	the Percentage of Laser Scribe Line Depth to Thickness (%)
0.2-0.3	40%±5%
0.3<T≤0.5	50%±3%
0.5<T≤1.0	43%±3%
1.2	55%±3%
1.5	55%±3%
2.0	55%+10%
The scribing spot can be in different sizes. Generally there are small spot 0.03-0.04mm (Substrate Thickness≤0.5mm ) and large spot 0.08-0.1mm (Substrate Thickness>0.5mm), and the accuracy is ±0.01mm.

 

Applications

Why Choose Us?

Thank you very much for your interest in our alumina substrates. In order to meet different market requirements, we put our unceasing efforts to promote quality control.

Product Recommendations

We offer bare ceramic substrates in various raw materials, sizes, and shapes. Welcome to contact us for quotation.