High Purity Al2O3 Alumina Lapped or Polished Automotive Ceramic Substrate

• Customization: Available
• Application: Electronic Devices, Lighting, Power Supply, Semiconductors, Refractory, Structure Ceramic, Industrial Ceramic
• Material: Al2O3
• Model NO.: JJBP-0111-0018
• Forming Method: Tape Casting
• Features: High Mechanical Strength, Small Dielectric Loss
• Usage: Blank Ceramic Circuit Board
• Optional Color: White, Ivory, Pink, Black
• Density: Over 3.70g/cm3
• Standard Thickness: 0.1-0.635mm Available
• Thickness Tolerance: ±0.03 (Standard) / ±0.01 (Best)
• Length and Width Tolerance: ±2mm
• Type: Ceramic Plates
• Transport Package: Individual Package
• Specification: Max. up to 114.3mm x 114.3mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000

Product Description

High Purity Al2O3 Alumina Lapped or Polished Automotive Ceramic Substrate

 

Product Description

 

About the Thickness

The thicker the alumina ceramic substrate, the better the strength and the stronger the pressure resistance, but the thermal conductivity is worse than that of the thinner one.

On the contrary, the thinner the substrate, the weaker the strength and pressure resistance than the thicker one, but the thermal conductivity is stronger.

 

The specification

Product Specification

Products of various specifications can be produced. The table below shows our standard thicknesses and sizes.

Alumina Ceramic Substrate
99.6% Al2O3
Thickness (mm)	Maximum Size (mm)			Shape			Molding Technique
	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.
96% Al2O3
Thickness (mm)	Maximum Size (mm)			Shape			Molding Technique
	As Fired	Lapped	Polished	Rectangular	Square	Round
0.25	120	114.3	114.3		√		Tape Casting
0.3	120	114.3	114.3		√		Tape Casting
0.38	140×190			√			Tape Casting
0.5	140×190			√			Tape Casting
0.635	140×190			√			Tape Casting
0.76	130×140			√			Tape Casting
0.8	130×140			√			Tape Casting
0.89	130×140			√			Tape Casting
1	280×240			√			Tape Casting
1.5	165×210			√			Tape Casting
2	500×500			√			Tape Casting
Other special thicknesses within the thickness range of 0.1-2.0mm can be achieved by lapping.

 
 

Product Parameters

Product Parameters

 

Alumina Ceramic Substrate
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

Product Inspection


 

We also produce

 

Beside bare ceramic substrates, we also manufacture metallized ceramic PCBs. Metallized ceramics is one of our advantageous products.