{"id":9045,"date":"2026-08-03T09:40:11","date_gmt":"2026-08-03T01:40:11","guid":{"rendered":"https:\/\/www.sic-wafers.com\/?p=9045"},"modified":"2026-08-03T09:43:58","modified_gmt":"2026-08-03T01:43:58","slug":"8-inch-sic-wafer-specifications","status":"publish","type":"post","link":"https:\/\/www.sic-wafers.com\/vi\/8-inch-sic-wafer-specifications\/","title":{"rendered":"8-Inch SiC Wafer Specifications: Diameter, Thickness, Resistivity and Defect Limits"},"content":{"rendered":"
<\/div>\n

Silicon carbide (SiC) has become one of the most important semiconductor materials for high-power, high-voltage and high-frequency applications. As electric vehicles, renewable energy systems, AI power supplies and industrial automation continue to grow, the demand for larger SiC substrates is increasing rapidly. Compared with traditional 6-inch wafers, 8-inch (200 mm) SiC wafers<\/a><\/strong> provide more usable die area, improved manufacturing efficiency and lower cost per chip, making them the preferred platform for next-generation semiconductor production.<\/p>\n\n\n\n

However, selecting an 8-inch SiC wafer involves much more than simply choosing the wafer diameter. Buyers must carefully evaluate thickness, crystal orientation, electrical properties, surface quality, defect density and mechanical tolerances to ensure compatibility with epitaxy and device fabrication processes.<\/p>\n\n\n\n

This guide explains the key specifications every semiconductor buyer should understand before requesting a quotation for 8-inch SiC wafers.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n
\n\n\n\n

Why Are 8-Inch SiC Wafers Becoming the Industry Standard?<\/h1>\n\n\n\n

For many years, 4-inch and 6-inch SiC wafers dominated the power semiconductor industry. Today, leading manufacturers are transitioning toward 8-inch substrates to increase production capacity and reduce manufacturing costs.<\/p>\n\n\n\n

The advantages of 8-inch SiC wafers include:<\/p>\n\n\n\n

    \n
  • Higher chip output per wafer<\/li>\n\n\n\n
  • Lower cost per device<\/li>\n\n\n\n
  • Improved equipment productivity<\/li>\n\n\n\n
  • Better manufacturing efficiency<\/li>\n\n\n\n
  • Reduced edge loss<\/li>\n\n\n\n
  • Greater competitiveness for mass production<\/li>\n<\/ul>\n\n\n\n

    As automotive manufacturers expand electric vehicle production and data centers require more efficient power conversion systems, the adoption of 200 mm SiC substrates is expected to accelerate significantly.<\/p>\n\n\n\n

    \n\n\n\n

    Standard Dimensions of an 8-Inch SiC Wafer<\/h1>\n\n\n\n

    Although individual manufacturers may define slightly different specifications, the following parameters are commonly accepted within the semiconductor industry.<\/p>\n\n\n\n

    Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/th><\/tr>
    Wafer Diameter<\/td>200 mm (8 inch)<\/td><\/tr>
    Diameter Tolerance<\/td>\u00b10.20 mm<\/td><\/tr>
    \u0110\u1ed9 d\u00e0y<\/td>500\u2013725 \u03bcm<\/td><\/tr>
    C\u1ea5u tr\u00fac tinh th\u1ec3<\/td>4H-SiC<\/td><\/tr>
    B\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n<\/td>SSP or DSP<\/td><\/tr>
    Bu\u1ed5i gi\u1edbi thi\u1ec7u<\/td>On-axis or 4\u00b0 Off-axis<\/td><\/tr>
    Primary Flat \/ Notch<\/td>According to SEMI Standard<\/td><\/tr>
    Edge Profile<\/td>Rounded Edge<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Different applications may require customized thicknesses or orientation angles depending on the epitaxial growth process.<\/p>\n\n\n\n

    \n\n\n\n

    Thickness Specifications<\/h1>\n\n\n\n

    Wafer thickness directly influences mechanical stability, polishing performance and compatibility with semiconductor equipment.<\/p>\n\n\n\n

    Typical thickness options include:<\/p>\n\n\n\n

    \u0110\u1ed9 d\u00e0y<\/td>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td><\/tr>
    500 \u03bcm<\/td>Thin wafer processing<\/td><\/tr>
    600 \u03bcm<\/td>Standard production<\/td><\/tr>
    650 \u03bcm<\/td>Power devices<\/td><\/tr>
    725 \u03bcm<\/td>High rigidity applications<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Thickness tolerance is generally controlled within a few micrometers to maintain excellent flatness during lithography and epitaxy.<\/p>\n\n\n\n

    \n\n\n\n

    Electrical Specifications<\/h1>\n\n\n\n

    Electrical properties are determined by the wafer type and intended application.<\/p>\n\n\n\n

    N-Type Conductive SiC Wafer<\/h2>\n\n\n\n

    Typical parameters include:<\/p>\n\n\n\n

      \n
    • Polytype: 4H-SiC<\/li>\n\n\n\n
    • Dopant: Nitrogen (N)<\/li>\n\n\n\n
    • \u0110i\u1ec7n tr\u1edf su\u1ea5t:\n
        \n
      • 0.015\u20130.028 \u03a9\u00b7cm<\/li>\n\n\n\n
      • 0.018\u20130.025 \u03a9\u00b7cm<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Carrier Concentration:\n
          \n
        • Approximately 1\u00d710\u00b9\u2078 cm\u207b\u00b3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

          These wafers are widely used for:<\/p>\n\n\n\n

            \n
          • MOSFET SiC<\/li>\n\n\n\n
          • Schottky Barrier Diodes<\/li>\n\n\n\n
          • Power Modules<\/li>\n\n\n\n
          • Fast Chargers<\/li>\n\n\n\n
          • Solar Inverters<\/li>\n<\/ul>\n\n\n\n
            \n\n\n\n

            Semi-Insulating SiC Wafer<\/h2>\n\n\n\n

            C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ti\u00eau bi\u1ec3u bao g\u1ed3m:<\/p>\n\n\n\n

              \n
            • Resistivity:1\u00d710\u2075 \u03a9\u00b7cm<\/li>\n<\/ul>\n\n\n\n

              ho\u1eb7c<\/p>\n\n\n\n

              \n

              1\u00d710\u2078 \u03a9\u00b7cm<\/p>\n<\/blockquote>\n\n\n\n

              depending on the application.<\/p>\n\n\n\n

              Semi-insulating substrates are commonly used for:<\/p>\n\n\n\n

                \n
              • Thi\u1ebft b\u1ecb RF<\/li>\n\n\n\n
              • GaN-on-SiC Epitaxy<\/li>\n\n\n\n
              • Microwave Devices<\/li>\n\n\n\n
              • H\u1ec7 th\u1ed1ng radar<\/li>\n\n\n\n
              • Tr\u1ea1m g\u1ed1c 5G<\/li>\n<\/ul>\n\n\n\n
                \n\n\n\n

                Surface Quality Specifications<\/h1>\n\n\n\n

                Surface quality has a direct impact on epitaxial growth and device yield.<\/p>\n\n\n\n

                Important specifications include:<\/p>\n\n\n\n

                Tham s\u1ed1<\/td>Y\u00eau c\u1ea7u th\u00f4ng th\u01b0\u1eddng<\/td><\/tr>
                \u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t (Ra)<\/td>\u22640.2 nm<\/td><\/tr>
                TTV<\/td>\u226410 \u03bcm<\/td><\/tr>
                Bow<\/td>\u226420 \u03bcm<\/td><\/tr>
                Bi\u1ebfn d\u1ea1ng<\/td>\u226430 \u03bcm<\/td><\/tr>
                Edge Chips<\/td>Kh\u00f4ng c\u00f3<\/td><\/tr>
                V\u1ebft x\u01b0\u1edbc<\/td>According to customer specification<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                A high-quality polished surface minimizes crystal defects during epitaxial deposition and improves device reliability.<\/p>\n\n\n\n

                \n\n\n\n

                Defect Limits Buyers Should Pay Attention To<\/h1>\n\n\n\n

                Crystal defects significantly affect semiconductor yield and long-term device reliability.<\/p>\n\n\n\n

                The most important defects include:<\/p>\n\n\n\n

                Micropipes (MP)<\/h2>\n\n\n\n

                Micropipes are hollow-core crystal defects that can cause catastrophic device failure. Modern production-grade wafers typically require extremely low micropipe densities.<\/p>\n\n\n\n

                \n\n\n\n

                S\u1ef1 d\u1ecbch chuy\u1ec3n m\u1eb7t ph\u1eb3ng c\u01a1 s\u1edf (BPD)<\/h2>\n\n\n\n

                BPDs may expand during bipolar device operation, reducing device lifetime and reliability.<\/p>\n\n\n\n

                \n\n\n\n

                S\u1ef1 d\u1ecbch chuy\u1ec3n v\u00edt ren (TSD)<\/h2>\n\n\n\n

                TSDs influence leakage current and overall crystal quality.<\/p>\n\n\n\n

                \n\n\n\n

                S\u1ef1 d\u1ecbch chuy\u1ec3n m\u00e9p s\u1ee3i (TED)<\/h2>\n\n\n\n

                Although less harmful than micropipes, excessive TED density can still affect epitaxial uniformity.<\/p>\n\n\n\n

                \n\n\n\n

                Typical defect specifications are summarized below.<\/p>\n\n\n\n

                Lo\u1ea1i l\u1ed7i<\/td>Y\u00eau c\u1ea7u th\u00f4ng th\u01b0\u1eddng<\/td><\/tr>
                \u0110\u1ed9 d\u00e0y c\u1ee7a \u1ed1ng vi m\u00f4<\/td>Extremely Low or Zero<\/td><\/tr>
                BPD Density<\/td>According to Grade<\/td><\/tr>
                TSD Density<\/td>Controlled<\/td><\/tr>
                TED Density<\/td>Controlled<\/td><\/tr>
                Surface Defects<\/td>Customer Specification<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                Different grades such as Production Grade, Research Grade and Dummy Grade have different defect limits.<\/p>\n\n\n\n

                \n\n\n\n

                SSP vs DSP Surface Finish<\/h1>\n\n\n\n

                Surface finish selection depends on downstream manufacturing requirements.<\/p>\n\n\n\n

                SSP (Single Side Polished)<\/h2>\n\n\n\n

                \u0110\u1eb7c \u0111i\u1ec3m:<\/p>\n\n\n\n

                  \n
                • One polished surface<\/li>\n\n\n\n
                • Lower cost<\/li>\n\n\n\n
                • Suitable for epitaxy<\/li>\n<\/ul>\n\n\n\n

                  \u1ee8ng d\u1ee5ng:<\/p>\n\n\n\n

                    \n
                  • Device manufacturing<\/li>\n\n\n\n
                  • Epitaxial growth<\/li>\n<\/ul>\n\n\n\n
                    \n\n\n\n

                    DSP (Double Side Polished)<\/h2>\n\n\n\n

                    \u0110\u1eb7c \u0111i\u1ec3m:<\/p>\n\n\n\n

                      \n
                    • Both surfaces polished<\/li>\n\n\n\n
                    • Better flatness<\/li>\n\n\n\n
                    • Higher alignment accuracy<\/li>\n<\/ul>\n\n\n\n

                      \u1ee8ng d\u1ee5ng:<\/p>\n\n\n\n

                        \n
                      • Wafer bonding<\/li>\n\n\n\n
                      • MEMS<\/li>\n\n\n\n
                      • Optical devices<\/li>\n\n\n\n
                      • Advanced packaging<\/li>\n<\/ul>\n\n\n\n
                        \n\n\n\n

                        Typical Applications of 8-Inch SiC Wafers<\/h1>\n\n\n\n

                        As production capacity expands, 8-inch SiC wafers are increasingly used in:<\/p>\n\n\n\n

                          \n
                        • Electric Vehicle Power Modules<\/li>\n\n\n\n
                        • High-Voltage MOSFETs<\/li>\n\n\n\n
                        • Schottky Barrier Diodes<\/li>\n\n\n\n
                        • AI Server Power Supplies<\/li>\n\n\n\n
                        • H\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o<\/li>\n\n\n\n
                        • Industrial Motor Drives<\/li>\n\n\n\n
                        • Railway Traction Systems<\/li>\n\n\n\n
                        • Aerospace Electronics<\/li>\n\n\n\n
                        • Thi\u1ebft b\u1ecb RF<\/li>\n\n\n\n
                        • High-Power Converters<\/li>\n<\/ul>\n\n\n\n

                          The larger wafer size enables manufacturers to increase chip output while reducing overall production costs.<\/p>\n\n\n\n

                          \n\n\n\n

                          RFQ Checklist for 8-Inch SiC Wafers<\/h1>\n\n\n\n

                          To receive an accurate quotation, buyers should provide as much technical information as possible.<\/p>\n\n\n\n

                          A complete RFQ typically includes:<\/p>\n\n\n\n

                            \n
                          • \u0110\u01b0\u1eddng k\u00ednh t\u1ea5m wafer<\/li>\n\n\n\n
                          • \u0110\u1ed9 d\u00e0y<\/li>\n\n\n\n
                          • Polytype (4H-SiC)<\/li>\n\n\n\n
                          • Conductive or Semi-Insulating<\/li>\n\n\n\n
                          • \u0110i\u1ec7n tr\u1edf su\u1ea5t<\/li>\n\n\n\n
                          • Crystal orientation<\/li>\n\n\n\n
                          • Off-axis angle<\/li>\n\n\n\n
                          • Surface finish (SSP\/DSP)<\/li>\n\n\n\n
                          • TTV requirement<\/li>\n\n\n\n
                          • Bow requirement<\/li>\n\n\n\n
                          • Warp requirement<\/li>\n\n\n\n
                          • \u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t<\/li>\n\n\n\n
                          • Defect limits<\/li>\n\n\n\n
                          • Wafer grade<\/li>\n\n\n\n
                          • Quantity<\/li>\n\n\n\n
                          • Packaging requirements<\/li>\n\n\n\n
                          • Delivery schedule<\/li>\n<\/ul>\n\n\n\n

                            Providing complete specifications helps suppliers recommend the most suitable products and reduces unnecessary communication.<\/p>\n\n\n\n

                            \n\n\n\n

                            How to Choose the Right Supplier<\/h1>\n\n\n\n

                            When evaluating an SiC wafer supplier, buyers should consider more than just pricing.<\/p>\n\n\n\n

                            Key evaluation factors include:<\/p>\n\n\n\n

                              \n
                            • Manufacturing capability<\/li>\n\n\n\n
                            • Crystal quality consistency<\/li>\n\n\n\n
                            • Defect inspection reports<\/li>\n\n\n\n
                            • Traceability<\/li>\n\n\n\n
                            • Quality management system<\/li>\n\n\n\n
                            • Packaging standards<\/li>\n\n\n\n
                            • Technical support<\/li>\n\n\n\n
                            • Customization capability<\/li>\n\n\n\n
                            • Stable long-term supply<\/li>\n<\/ul>\n\n\n\n

                              A supplier capable of providing detailed inspection reports, customized specifications and responsive engineering support is often more valuable than one offering only the lowest price.<\/p>\n\n\n\n

                              \n\n\n\n

                              Frequently Asked Questions<\/h1>\n\n\n\n

                              What is the standard diameter of an 8-inch SiC wafer?<\/h2>\n\n\n\n

                              The standard diameter is 200 mm<\/strong>, commonly referred to as an 8-inch wafer.<\/p>\n\n\n\n

                              \n\n\n\n

                              What thickness is commonly available?<\/h2>\n\n\n\n

                              Standard thicknesses range from 500 \u03bcm to 725 \u03bcm<\/strong>, with customized options available for specific applications.<\/p>\n\n\n\n

                              \n\n\n\n

                              What is the difference between conductive and semi-insulating SiC wafers?<\/h2>\n\n\n\n

                              Conductive wafers are primarily used for power semiconductor devices, while semi-insulating wafers are widely used in RF and microwave applications.<\/p>\n\n\n\n

                              \n\n\n\n

                              Which surface finish should I choose?<\/h2>\n\n\n\n

                              SSP is suitable for most epitaxial processes, while DSP is preferred for wafer bonding, MEMS and applications requiring both surfaces to be polished.<\/p>\n\n\n\n

                              \n\n\n\n

                              Which specifications are most important when purchasing 8-inch SiC wafers?<\/h2>\n\n\n\n

                              The most critical specifications include diameter, thickness, resistivity, crystal orientation, surface finish, TTV, bow, warp, defect limits and wafer grade.<\/p>\n\n\n\n

                              \n\n\n\n

                              K\u1ebft lu\u1eadn<\/h1>\n\n\n\n

                              The transition from 6-inch to 8-inch SiC wafers<\/strong> represents a major milestone in semiconductor manufacturing. Larger substrates enable higher productivity, lower production costs and greater scalability for power electronics and advanced semiconductor devices.<\/p>\n\n\n\n

                              Before placing an order, buyers should carefully review key specifications such as wafer dimensions, electrical properties, crystal orientation, surface quality and defect limits. Providing complete RFQ information not only accelerates supplier evaluation but also helps ensure that the selected wafer meets the performance and reliability requirements of the final application.<\/p>\n\n\n\n

                              Whether your project involves power devices, RF components or advanced packaging, selecting the appropriate 8-inch SiC wafer specifications is essential for achieving consistent manufacturing quality and long-term device performance.<\/p>","protected":false},"excerpt":{"rendered":"

                              Silicon carbide (SiC) has become one of the most important semiconductor materials for high-power, high-voltage and high-frequency applications. As electric vehicles, renewable energy systems, AI power supplies and industrial automation continue to grow, the demand for larger SiC substrates is increasing rapidly. Compared with traditional 6-inch wafers, 8-inch (200 mm) SiC wafers provide more usable […]<\/p>\n","protected":false},"author":2,"featured_media":9046,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[12,27],"tags":[2666,2723,2721,2720,2722,1168,2725,2295,2724,1266],"class_list":["post-9045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-companynews","tag-200mm-sic-wafer","tag-4h-sic-wafer","tag-8-inch-sic-wafer-2","tag-conductive-sic-wafer","tag-semi-insulating-sic-wafer","tag-sic-substrate","tag-sic-wafer-diameter","tag-sic-wafer-specifications","tag-sic-wafer-thickness","tag-silicon-carbide-wafer"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications.webp",1536,1024,false],"thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-150x150.webp",150,150,true],"medium":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-300x200.webp",300,200,true],"medium_large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-768x512.webp",768,512,true],"large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-1024x683.webp",800,534,true],"1536x1536":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications.webp",1536,1024,false],"2048x2048":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications.webp",1536,1024,false],"trp-custom-language-flag":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-18x12.webp",18,12,true],"woocommerce_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-300x300.webp",300,300,true],"woocommerce_single":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-600x400.webp",600,400,true],"woocommerce_gallery_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/08\/8-Inch-SiC-Wafer-Specifications-100x100.webp",100,100,true]},"uagb_author_info":{"display_name":"lydia","author_link":"https:\/\/www.sic-wafers.com\/vi\/author\/lydia\/"},"uagb_comment_info":0,"uagb_excerpt":"Silicon carbide (SiC) has become one of the most important semiconductor materials for high-power, high-voltage and high-frequency applications. As electric vehicles, renewable energy systems, AI power supplies and industrial automation continue to grow, the demand for larger SiC substrates is increasing rapidly. Compared with traditional 6-inch wafers, 8-inch (200 mm) SiC wafers provide more usable…","_links":{"self":[{"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/posts\/9045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/comments?post=9045"}],"version-history":[{"count":1,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/posts\/9045\/revisions"}],"predecessor-version":[{"id":9047,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/posts\/9045\/revisions\/9047"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/media\/9046"}],"wp:attachment":[{"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/media?parent=9045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/categories?post=9045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/vi\/wp-json\/wp\/v2\/tags?post=9045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}