96% 99.6% as Fired Blank Al2O3 Substrate Aluminum Oxide Alumina Ceramic Plate

• Customization: Available
• Application: Electronic Devices, Lighting, Power Supply, Semiconductors
• Material: Al2O3
• Model NO.: JJBP-0111-0002
• Forming Method: Tape Casting
• Purity of Material: 96%, 99.6% Alumina
• Feature: High Mechanical Strength, Small Dielectric Loss
• Optional Color: White, Ivory, Pink, Black
• Density: Over 3.70g/cm3
• Standard Thickness: 0.25-2.0mm Available
• Thickness Tolerance: ±0.03/0.05mm (Depending on Thickness)
• Length and Width Tolerance: ±2mm
• Customized Service: OEM, ODM, Prototyping, Mass Production
• Transport Package: Individual Packaging
• Trademark: Jinghui
• Origin: China
• HS Code: 6914100000
• Production Capacity: 50000 Pieces/Month
• Package Size: 27.00cm * 17.00cm * 20.00cm
• Package Gross Weight: 2.000kg

Product Description

96% 99.6% As Fired Blank Al2O3 Substrate Aluminum Oxide Alumina Ceramic Plate

Product Features

96% and 99.6% alumina ceramics share all the essential excellent genes as "high-end electronic ceramic substrates". The following are their most common characteristics.

1. Excellent electrical insulation
This allows them to effectively isolate circuits, prevent short circuits, and withstand high voltages-essential requirements for electronic substrates.

2. Excellent thermal conductivity
Ceramic substrates effectively conduct heat away from heat-generating components such as chips, preventing device failure due to overheating. This is the core reason why ceramic substrates are widely used in power electronics.

3. High mechanical strength and hardness
They have a sturdy structure, can withstand certain mechanical stresses, are not easily bent or deformed, and can support and protect the chips, components, and circuits mounted on them.

4. Excellent thermal stability and thermal shock resistance
This is crucial for power modules that require high-temperature sintering of thick-film pastes or operate under repeated switching conditions.

5. High chemical stability
Can operate stably and long-term in harsh environments, and is not susceptible to aging, oxidation, or rust.

6. Low dielectric constant and relatively low dielectric loss
This facilitates high-speed signal transmission within circuits, reducing signal delay and energy loss, making it particularly suitable for high-frequency applications.
 

Product Parameters

Alumina Ceramic Plate
Item	Unit		96% Al2O3	99.6% Al2O3
Mechanical Properties
Color	/	/	White	Ivory
Density	Drainage Method	g/cm^3	≥3.70	≥3.95
Light Reflectivity	400nm/1mm	%	94	83
Flexural Strength	Three Point Bending	MPa	>350	>500
Fracture Toughness	Indentation Method	MPa·m^1/2	3.0	3.0
Vickers Hardness	Load 4.9N	GPa	14	16
Young's Modulus	Stretching Method	GPa	340	300
Water Absorption		%	0	0
Camber	/	Length‰	T≤0.3: ≤5‰, Others: ≤3‰	≤3‰
Thermal Properties
Max. Service Temperature (Non-loading)	/	ºC	1200	1400
CTE (Coefficient of Thermal Expansion)	20-800ºC	1×10^-6/ºC	7.8	7.9
Thermal Conductivity	25ºC	W/m·K	>24	>29
Thermal Shock Resistance	800ºC	≥10 Times	No Crack	No Crack
Specific Heat	25ºC	J/kg·k	750	780
Electrical Properties
Dielectric Constant	25ºC, 1MHz	/	9.4	9.8
Dielectric Loss Angle	25ºC, 1MHz	×10^-4	≤3	≤2
Volume Resistivity	25ºC	Ω·cm	≥10^14	≥10^14
Dielectric Strength	DC	KV/mm	≥15	≥15

Manufacturing Capacity

1. Product Tolerances
 

Alumina Ceramic Plate
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

2. Surface Roughness
 

Alumina Ceramic Plate
Material	Surface Roughness (μm)
	As Fired	Lapped	Polished
96% Al2O3	Ra 0.2-0.75	Ra 0.3-0.7	Ra ≤0.05
99.6% Al2O3	Ra 0.05-0.15	Ra 0.1-0.5	Ra ≤0.05

Packaging & Shipping

Because ceramics are hard and brittle materials, each of our products will be packed in a safe and reliable way to avoid damage during transportation.

FAQ

Q1: Can the size be customized?
Yes, we can customize alumina ceramic plates for you. Customization options include size, thickness, surface treatment, etc.

Q2: What is the maximum service temperature of the alumina ceramic plates?
Alumina ceramic plates can withstand high temperature of 1200-1400 ºC.

Q3: What is the minimum thickness of the alumina ceramic plates?
Our standard thickness: 0.25mm, 0.30mm, 0.38mm, 0.50mm, 0.635mm, 0.76mm, 0.80mm, 0.89mm, 1.0mm, 1.5mm and 2.0mm. Minimum thickness to be 0.1mm. Welcome to inquire about customized services.

Q4: What is the depth of the laser scribing?
The depth of the laser scribing of our alumina ceramic plate is about 35%-65% of the plate thickness. 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.

Q5: Can the alumina ceramic plates be polished?
Yes, lapping and polishing will provide the desired flatness and thickness tolerance, with a surface roughness generally below Ra0.05.

Q6: What is the camber of the alumina ceramic plates?
Our alumina ceramic plates are 100% inspected for camber. The camber is less than 5‰ for 96% alumina with a thickness below 0.3mm. For 96% alumina with other thicknesses and for other purities, the camber is less than 3‰.

If your question is not listed here, please for more information.