4H-N SiC Wafer 2 Inch & 4 Inch – Advanced Substrate for Power Electronics

Introduction

The demand for high-performance semiconductors grows rapidly because industries such as electric vehicles, renewable energy, and 5G communication need materials that handle extreme conditions. Traditional silicon wafers cannot always deliver the required efficiency, thermal stability, and reliability. Therefore, many manufacturers and research centers now choose SiC wafer as the foundation for advanced devices.

4H-N Silicon Carbide (SiC) wafer represents the most reliable and cost-effective solution for power electronics. It combines excellent electrical properties with outstanding mechanical strength, and it provides superior thermal conductivity compared to traditional silicon. Because of these advantages, engineers and designers across the world invest in 2 inch and 4 inch SiC wafer production to achieve breakthroughs in efficiency and performance.

Product Overview

We offer high-quality 4H-N SiC wafer products in 2 inch and 4 inch diameters. These wafers follow strict industry standards and provide consistent performance for both research and mass production.

The 4H polytype is particularly important because it delivers high electron mobility, wide bandgap, and strong thermal stability. These features allow devices to operate at higher voltages, higher frequencies, and elevated temperatures. Moreover, our wafers ensure a smooth transition from laboratory-scale experiments to commercial production lines.

Technical Specifications

Our wafers comply with demanding specifications that ensure reliability. Each parameter plays a crucial role in the final device performance.

• Diameter: 99.5 mm – 100.0 mm (for 4 inch wafers).

• Polytype: 4H structure, known for high electron saturation velocity.

• Thickness: 350 µm ± 15 µm, which provides mechanical strength and ease of processing.

• Wafer Orientation: Off-axis 4° ± 0.5° or On-axis ± 0.5°, supporting both epitaxial growth and research use.

• Micropipe Density: ≤ 0.2 cm⁻² for production grade wafers, which ensures high device yield.

• Resistivity: 0.015 – 0.024 Ω·cm, which enables consistent doping control.

• Primary Flat Orientation: (0-1-1-0) ± 5.0°.

• Primary Flat Length: 32.5 mm ± 2.0 mm.

• Secondary Flat Orientation: ± 90° CW from primary flat.

• Edge Exclusion: 3 mm.

• LTV / TTV / Bow / Warp: 2.5 µm / 5 µm / 15 µm / 30 µm maximum.

• Roughness: Polished Ra ≤ 1 nm.

• Defect Inspection: No cracks, no visible contamination, and low dislocation density ≤ 5,000 cm⁻².

• Packaging: Multi-wafer cassette or single wafer container for safe global shipping.

Because each wafer passes through strict quality inspection, customers gain confidence in stable supply and consistent device performance.

Grade Options: Zero MPD vs Dummy

We provide two clear grade options so that customers can choose the most suitable wafer for their project.

1. Zero MPD Production Grade (Z Grade)

   • Designed for high-volume production.

   • Micropipe density ≤ 0.2 cm⁻².

   • Optimized for epitaxy and device fabrication.

   • Low defect density ensures high device yield.

   • Ideal for commercial applications in power electronics.

2. Dummy Grade (D Grade)

   • Designed for research, testing, and process calibration.

   • Cost-effective option for universities and laboratories.

   • Surface quality supports training and pilot experiments.

   • Useful for etching tests, equipment calibration, and coating development.

Because customers often run parallel R&D and production, both grades serve complementary roles. Therefore, we recommend combining Z Grade wafers for final devices and Dummy Grade wafers for preliminary research.

Advantages of Our SiC Wafers

Choosing our SiC wafer products gives your projects multiple advantages:

• High Quality Control: Every wafer undergoes detailed inspection under high-intensity light to detect cracks, hex pits, polytype inclusions, or scratches.

• Low Surface Defects: Ra ≤ 1 nm guarantees smooth epitaxy growth.

• Excellent Flatness: Low TTV, bow, and warp values improve lithography alignment and device yield.

• Thermal Stability: The wide bandgap of 4H-SiC allows devices to run in harsh environments.

• Global Shipping: Secure packaging ensures wafers arrive safely, ready for immediate use.

• Customer Support: Our team provides technical guidance and fast response to inquiries.

Moreover, our wafers provide consistent results across different batches. This stability reduces variation in final devices and helps customers save both time and cost.

Applications

The use of sic wafer continues to expand because industries require efficient solutions. The main application fields include:

• Power Devices: MOSFETs, Schottky diodes, and thyristors benefit from high voltage and high frequency capability.

• Electric Vehicles: On-board chargers, inverters, and DC/DC converters require robust substrates for efficiency.

• Renewable Energy: Solar inverters and wind power converters achieve higher reliability with SiC wafers.

• 5G and RF Devices: High-frequency components demand low loss substrates.

• LEDs and Optoelectronics: SiC supports GaN epitaxy for advanced optoelectronic devices.

• Aerospace and Defense: Harsh environment electronics need wide bandgap semiconductors.

Because of these versatile applications, the demand for 2 inch and 4 inch sic wafer products continues to rise globally.

Packaging and Delivery

Each wafer is packaged in a multi-wafer cassette or single wafer container. The packaging protects the wafer surface from scratches, contamination, and mechanical stress. Moreover, we guarantee cleanroom handling procedures to keep every wafer in top condition. Because reliable logistics are critical, we partner with trusted carriers for on-time delivery worldwide.

Conclusion and Call to Action

In summary, the 4H-N SiC wafer offers unmatched performance for power electronics and next-generation devices. With strict quality standards, advanced specifications, and secure packaging, our wafers meet the needs of research labs, device manufacturers, and industrial production lines.

If you need sic wafer solutions in 2 inch or 4 inch sizes, contact our sales team today. We provide fast quotations, technical support, and global delivery. Because your success depends on reliable materials, we dedicate ourselves to supplying wafers that help you innovate and lead in your industry.