Tape Casting Pink Alumina Ceramic Substrate Aluminum Oxide PCB Board

• Application: Refractory, Structure Ceramic, Industrial Ceramic, Functional Ceramic
• Material: Alumina Ceramic
• Type: Ceramic Plates
• Forming Method: Tape Casting
• Features: High Mechanical Strength, Small Dielectric Loss
• Optional Color: White, Ivory, Pink, Black
• Model NO.: JJBP-0111-0007
• 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
• Transport Package: Individual Package
• Specification: Max. up to 500mm x 500mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000

Product Description

Tape Casting Pink Alumina Ceramic Substrate Aluminum Oxide PCB Board

Product Introduction

How to Obtain Alumina Substrates of Different Colors

Alumina often needs to be colored in practical applications. We add colored ionic compounds to make alumina products in different colors.

- For example, in semiconductor integrated circuits, alumina used as a package shell should have light-shielding properties. Therefore, the Al2O3 on the back panel of the digital tube is also required to be black to ensure a clear digital display. For this purpose, Fe2O3, CoO.Cr2O3, TiO2, MnO and other colored oxides can be added into Al2O3.

- Another example, the pink alumina product is to add Cr2O3 into Al2O3 ceramics, because the Cr3+ ions in the solid solution α-Al2O3 lattice have a strong selective absorption of the blue-green color of visible light, showing a blue-green complementary color, that is, pink.

So far, the alumina substrate is the most commonly used substrate material in the electronics industry, because of its mechanical, thermal, and electrical properties compared to most other oxide ceramics. It has high strength and chemical stability, and is rich in raw materials. It is suitable for various technical manufacturing and can be produced in different shapes.

Manufacturing Capacity

Since the first step in the preparation process of alumina PCB boards is to make bare alumina substrates. Below we will focus on our production capabilities on bare substrate products. After the bare alumina substrate is prepared, we can print circuits on it through DBC, DPC, TPC and other production processes and finally obtain an alumina PCB board. You are welcome to contact us for customization.

1. Product Specification

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

Bare 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.

2. Product Tolerances
 

Bare Alumina Ceramic 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. Material Properties

Bare 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
Dielectric Strength	DC	KV/mm	≥15	≥15

 

Applications

Product Inspection

FAQ

Q1: Can the Size be Customized?
Yes, most of the alumina ceramic substrates are rectangular, square or round in shapes. Our rectangular shapes for as-fired alumina ceramic substrates are available up to 500mm×500mm. We offer customized products for special requirements.

Q2: What is the Maximum ServiceTemperature of the Alumina Ceramic Substrates?
Alumina ceramic substrates can withstand high temperature of 1200-1400 ºC.

Q3: Can You Produce Alumina Ceramic Substrates in Different Colors?
Currently, we have been producing alumina ceramic substrates in optional colors such as white, ivory, pink, and black.

Q4: What is the Minimum Thickness of the Alumina Ceramic Substrates?
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.

Q5: Do the Bare Ceramic Substrates Meet the Requirements for Metallized Ceramic Circuit Boards?
Yes. Metallized ceramic substrates, also known as metallized ceramic circuit boards, include bare ceramic substrates and metal circuit layers. Bare ceramic substrates are widely used in integrated circuit packaging, LED lighting, heat dissipation substrates and other fields in the electronic industry due to their advantages of thinness, high temperature resistance, high electrical insulation performance, low dielectric loss, and good chemical stability.

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