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SiC Materials

n-Type SiC Substrates

Keeping Pace with the World's Demand for SiC Power

Industry-Leading Flexibility and Scale

With more than 30 years of SiC development and manufacturing experience, Wolfspeed produces the industry’s broadest range of SiC materials. Offering n-type conductive SiC products and a variety of SiC epitaxy options, Wolfspeed delivers the quality and quantity necessary to support the rapidly expanding demand for high-efficiency, SiC power semiconductors.

When you partner with Wolfspeed, you get the best and most innovative materials.

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Materials Portfolio

Polytype

  • 4H

Surface Orientation

  • 4° Off-axis

Supported Diameters

  • 150 mm

SiC Epitaxy

  • n-type
  • p-type
  • Thick epitaxy

n-Type SiC Substrate Product Descriptions

The Materials Business Unit produces a wide assortment of n-type conductive SiC products ranging in wafer diameters up to 150mm. Wolfspeed's industry-leading, high-volume platform process provides our customers with the highest degree of material quality, supply assurance and economies of scale.

Part Number
Description
W4NRG4C-C1-U200
4H-SiC, n-type, Research Grade, 150mm, 4° Off-Axis, 0.015-0.028 Ω-cm, Ultra Low MPD ≤1/cm2, 350um Thick w/ 47.5mm Flat, Double-Sided Polish Si Face CMP Epi Ready, Bare Substrate
W4NPG4C-C1-U200
4H-SiC, n-type, Production Grade, 150mm, 4° Off-Axis, 0.015-0.028 Ω-cm, Ultra Low MPD ≤1/cm2, 350um Thick w/ 47.5mm Flat, Double-Sided Polish Si Face CMP Epi Ready, Bare Substrate
W4NPG4C-C1-B200
4H-SiC, n-type, Production Grade, 150mm, 4° Off-Axis, 0.015-0.028 Ω-cm, Ultra Low MPD ≤1/cm2, Low BPD ≤1500/cm2, 350um Thick w/ 47.5mm Flat, Double-Sided Polish Si Face CMP Epi Ready, Bare Substrate

*150mm LBPD substrates available upon request, lead times dependent on volume and requirements


Dimensional Properties, Terminology and Measurements

Flat Length
Linear dimension of the flat measured with automated optical micrometer.​
Primary Flat
The flat of the longest length on the wafer, oriented such that the chord is parallel with a specified low-index crystal plane.
Primary Flat Orientation
The primary flat is the (1100) plane with the flat face parallel to the [1120] direction.
Secondary Flat
Not applicable to 150 mm wafers.
Marking
For silicon face polished material, the carbon face of each individual wafer is laser-marked with OCR-compatible font, similar to the definitions and characteristics in SEMI M12. The laser markings are offset right when looking at the carbon face with the primary flat oriented down.

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