Industrial Custom High Thermal Conductivity Aluminum Nitride AlN
Ceramic Disc
The specification of the AlN Ceramic disc
1. We are supplying with many round ceramic wafers, square &
rectangular ceramic substrates
2. The typical thickness of AlN wafers covers 0.38mm, 0.5mm,
0.635mm, 1.0mm, 1.2mm, 1.5mm
3. The biggest diameter of the round ceramic wafer can be up to
400mm in 3mm, 4mm, 5mm thick
4. The max. side-length of the square and rectangular ceramic wafer
can be 400mm by 500mm
5. Surface treatment: it can be one-side, or double side polished,
metalizing or sandblasting
6. The checklist of standard size with the typical thickness as
below:
| S/N | Thickness | Size |
| 1 | 0.38 | 50.8 x 50.8mm 76.2 x 76.2mm 101.6 x 101.6mm 110 x 110mm 114.3 x 114.3mm 120 x 120mm 127 x 127mm |
| 2 | 0.50 |
| 3 | 0.635 |
| 4 | 1.0 |
| 5 | 1.2 |
| 6 | 1.5 |
The prime features of the AlN ceramic disc
1. High thermal conductivity (170 ~220) W/m.k, it's 5~8.5 times
higher than that of alumina
2. Similar coefficient of thermal expansion to that of silicon
(Si), it helps to achieve high reliability of Si chip
3. High insulation resistance and voltage resistance strength, but
low dielectric constant and dielectric loss
4. High mechanical strength, it's up to 450MPa and very dense
ceramic body without any porosity
5. It offers very high purity up to 99%, also it's free of toxicity
and meets RoHS, REACH regulation
The description of the AlN ceramic plate
Aluminum nitride ceramic (AlN) has excellent properties such as
high thermal conductivity, high strength, high resistivity, small
density, low dielectric constant, non-toxic, and thermal expansion
coefficient matching with Si. It is a new type of ceramic material
with excellent comprehensive performance. Due to its extremely high
thermal conductivity, aluminum nitride can meet the heat
dissipation requirements of high-power devices such as optical
communication, microwave communication, LED, and high-speed rail.
It is considered to be an ideal material for the packaging of new
generation semiconductor substrates and electronic devices.
Property Datasheet of AlN Ceramic Wafers and Ceramic Plates
| General | Properties | Unit | Value |
| Mechanical | Purity | % | ≥99 |
| Volume Density | g/cm3 | ≥3.30 |
| Color | | Gray |
| Porosity | % | 0 |
| Compressive Strength | MPa | - |
| Bending Strength | MPa | 450 |
| Elastic Modulus | MPa | 330 |
| Fracture toughness | Mpam1/2 | 3 |
| Thermal | Max. service temperature (Non-loading) | ℃ | 1800 |
| Thermal Conductivity (25℃) | W/m.k | ≥170 |
| Coefficient of Thermal Expansion (CTE) | 1*10-6 m/k | 4.6 |
| Specific heat | 1 x 103J/(kg·K) | 0.74 |
| Electrical | Volume Resistivity (25℃) | ohm.cm | 1*1014 |
| Insulation Breakdown | KV/mm | 25 |
| Dielectric constant (1Mhz) | (E) | 8.7 |
Why choose us?
1.With 15 years of manufacturing experience in OEM, ODM
2. Powerful R&D, customized and mass production capability
3. In-house comprehensive manufacturing types of equipment
4. Rigorous quality control system and processes
FAQs (Frequently Asked Questions)
Q1: When can I get the price?
A: We regularly quote within 12 hours after we get your inquiry. If
you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed
with your inquiry as a priority.
Q2: Is it available to provide customized products?
A: We always support custom-made demand as per different materials,
dimensions, and designs.
Q3. Are you a factory or trading company?
A: We are a direct manufacturer of technical ceramic components.
You are welcome to visit our factory.
Q4: How to ensure quality?
A: We have a complete strict quality-control system, including IQC,
IPQC, QA, OQC per ISO9001: 2008
Q5: What other products are you dealing with?
A: We also focus on a variety of metalized ceramics, high precision
zirconia ceramic parts, ceramic seals.
