Overview
Silicon nitride (SiN) substrates are high-performance ceramic wafers valued for their outstanding mechanical strength, thermal stability, and electrical insulation. They are widely used in power electronics, RF and microwave devices, optoelectronics, and advanced packaging. Standard sizes are stocked for fast turnaround, and every parameter — diameter, thickness, crystal orientation, and surface finish — can be tailored to a customer's process requirements.
Why Silicon Nitride
- • High thermal conductivity for efficient heat dissipation in high-power assemblies
- • High mechanical strength with excellent resistance to wear, impact, and fracture
- • Outstanding electrical insulation, suited to high-voltage and high-frequency designs
- • Thermal expansion closely matched to Si, GaN, and SiC, reducing stress at material interfaces
- • Strong chemical resistance to acids and bases under demanding process conditions
- • Fully customizable — dimensions, thickness, crystal orientation, and surface roughness
Specifications
|
Parameter |
Standard Spec |
Custom Range |
|
Wafer Diameter |
2" / 4" / 6" |
1" - 8", custom shapes available |
|
Thickness |
0.3 mm / 0.5 mm / 1.0 mm |
0.1 - 2 mm |
|
Surface Roughness (Ra) |
< 1 nm (polished grade) |
Polished / lapped / double-side polished, to spec |
|
Crystal Structure |
Single crystal / Polycrystalline |
Available on request |
|
Purity |
≥ 99.9% |
Higher purity grades available |
|
Thermal Conductivity |
High (process-dependent) |
— |
|
Volume Resistivity |
> 10^14 Ω·cm |
— |
|
Dimensional Tolerance |
± 0.1 mm |
Tighter tolerances available |
Applications
- • Power semiconductor substrates (IGBT, MOSFET, and similar devices)
- • RF and millimeter-wave components
- • LED and optoelectronic packaging
- • MEMS and sensor fabrication
- • Advanced packaging — carrier substrates and interposers
- • R&D and process development wafers
Custom Capabilities
Why Work With Us
- • Years of experience in semiconductor material development and volume production
- • Robust quality control system ensuring lot-to-lot consistency
- • End-to-end technical support, from initial samples through mass production
- • Responsive engineering team and flexible lead times for custom orders
