{"id":9626,"date":"2025-12-09T12:53:50","date_gmt":"2025-12-09T03:53:50","guid":{"rendered":"https:\/\/www.nikko-company.co.jp\/?post_type=ceramics&#038;p=9626"},"modified":"2025-12-09T12:53:51","modified_gmt":"2025-12-09T03:53:51","slug":"995alumina","status":"publish","type":"ceramics","link":"https:\/\/www.nikko-company.co.jp\/en\/functional-ceramics-product\/ceramic-board\/995alumina\/","title":{"rendered":"High-Purity Alumina Substrate (99.5% Alumina)"},"content":{"rendered":"\n<div class=\"l-section wp-block-bhw-wp-blocks-wrapper l-wrapper u-stack-8 m:u-stack-12\">\n<div class=\"l-row__outer\"><div class=\"l-row _gap-4 m:_gap-6 s:_column-reverse wp-block-bhw-wp-blocks-column-row\">\n<div class=\"l-col _col-12 m:_col-8 wp-block-bhw-wp-blocks-column-col\">\n<div class=\"wp-block-bhw-wp-blocks-wrapper l-wrapper u-stack-6 m:u-stack-8\"><div class=\"lazyblock-product-details-tags-1X4qDS wp-block-lazyblock-product-details-tags\">\r\n<div>\r\n  <ul class=\"c-tags u-column-stack\">\r\n    \r\n    <li class=\"c-tags__items\">\r\n      <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/ceramic-board\">\r\n        <span class=\"inner\"><span>Ceramic Substrates<\/span><\/span>\r\n      <\/a>\r\n    <\/li>\r\n\r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/use\/#vehicle\">\r\n            <span class=\"inner\"><span>Automotive<\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/use\/#oa\">\r\n            <span class=\"inner\"><span>Office Electronics<\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/use\/#tph\">\r\n            <span class=\"inner\"><span>Thermal Printer Head (TPH) Substrates <\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n    \r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/feature\/#insulation\">\r\n            <span class=\"inner\"><span>Insulation<\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/feature\/#surface-smoothness\">\r\n            <span class=\"inner\"><span>Surface Flatness<\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n            <li class=\"c-tags__items\">\r\n          <a class=\"c-tags__tag c-tag\" href=\"\/en\/functional-ceramics-product\/feature\/#high-thermal\">\r\n            <span class=\"inner\"><span>High Thermal Conductivity<\/span><\/span>\r\n          <\/a>\r\n        <\/li>\r\n    \r\n  <\/ul>\r\n<\/div><\/div>\n\n\n<p>With an alumina purity of 99.5% or higher, this ceramic substrate offers exceptional surface smoothness, making it ideal for fine-pitch wiring patterns and thin-film circuit formation. It also provides outstanding electrical insulation, high heat resistance, and high mechanical strength. These properties make it suitable for demanding applications such as power devices, automotive components, LED lighting, and various electronic devices requiring insulated heat-dissipation substrates.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"l-col _col-12 m:_col-4 wp-block-bhw-wp-blocks-column-col\">\n<figure class=\"wp-block-image size-full c-image _full\"><img loading=\"lazy\" decoding=\"async\" width=\"560\" height=\"373\" src=\"http:\/\/www.nikko-company.co.jp\/wp\/wp-content\/uploads\/2025\/11\/alumina_NA995.jpg\" alt=\"\" class=\"wp-image-9614\"\/><\/figure>\n<\/div>\n<\/div><\/div>\n\n\n<div class=\"lazyblock-page-anchors-Z23nwsr wp-block-lazyblock-page-anchors\"><div class=\"c-page-anchors\">\n  <div class=\"c-page-anchors__inner\">\n    <ul class=\"c-page-anchors__items\">\n      <li class=\"c-page-anchors__item\"><a class=\"c-page-anchors__link\" href=\"#feature\"><span class=\"inner\"><span>Features<\/span><\/span><\/a><\/li>\n      <li class=\"c-page-anchors__item\"><a class=\"c-page-anchors__link\" href=\"#quality\"><span class=\"inner\"><span>Material Characteristics<\/span><\/span><\/a><\/li>\n      <li class=\"c-page-anchors__item\"><a class=\"c-page-anchors__link\" href=\"#guideline\"><span class=\"inner\"><span>Design Guidelines<\/span><\/span><\/a><\/li>\n      <li class=\"c-page-anchors__item\"><a class=\"c-page-anchors__link\" href=\"#catalog\"><span class=\"inner\"><span>Catalog Download<\/span><\/span><\/a><\/li>\n      <li class=\"c-page-anchors__item\"><a class=\"c-page-anchors__link\" href=\"#use\"><span class=\"inner\"><span>Product Use Cases<\/span><\/span><\/a><\/li>\n    <\/ul>\n  <\/div>\n<\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading c-heading _h2\">Features<\/h2>\n\n\n\n<section class=\"l-section wp-block-bhw-wp-blocks-wrapper l-wrapper\">\n<div class=\"wp-block-bhw-wp-blocks-wrapper l-wrapper u-stack-8\">\n<div class=\"l-row__outer\"><div class=\"l-row wp-block-bhw-wp-blocks-column-row\">\n<div class=\"l-col _col-12 wp-block-bhw-wp-blocks-column-col\">\n<div class=\"wp-block-bhw-wp-blocks-wrapper l-wrapper u-stack-8\">\n<p>With a high alumina purity of 99.5% and minimal internal porosity, this substrate offers excellent electrical properties and mechanical strength. It features high dielectric breakdown voltage, high volume resistivity, and low dielectric loss, making it well-suited for high-frequency applications. Its high flexural strength allows for thin substrates that resist cracking, providing excellent handling. The fine particle structure ensures a smooth surface, ideal for fine circuit formation and coating. Even under high-temperature conditions, its physical and chemical properties remain stable, and with a thermal expansion coefficient close to silicon, it also offers superior thermal conductivity.<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/section>\n\n\n\n<section class=\"l-section wp-block-bhw-wp-blocks-wrapper l-wrapper\">\n<h2 class=\"wp-block-heading c-heading _h2\" id=\"quality\">Material Characteristics<\/h2>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table is-scroll-on-mobile is-style-stripes\"><table class=\"has-fixed-layout\" style=\"width:100%\"><tbody><tr><th rowspan=\"2\" colspan=\"2\" style=\"text-align:center\"><strong>ITEM<\/strong><\/th><th rowspan=\"2\" style=\"text-align:center\"><strong>UNIT<\/strong><\/th><th rowspan=\"2\" style=\"text-align:center\"><strong>TEST<\/strong><br><strong>CONDITIONS<\/strong><\/th><th style=\"text-align:center\">99.5% Alumina Substrate<\/th><th style=\"text-align:center\">96% Alumina Substrate<\/th><\/tr><tr><th style=\"text-align:center\">NA-995<\/th><th style=\"text-align:center\">NA-96<\/th><\/tr><tr><td colspan=\"2\" style=\"text-align:center;vertical-align:middle\">MATERIAL<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">99.5%Al<sub>2<\/sub>O<sub>3<\/sub><\/td><td style=\"text-align:center;vertical-align:middle\">96%Al<sub>2<\/sub>O<sub>3<\/sub><\/td><\/tr><tr><td colspan=\"2\" style=\"text-align:center;vertical-align:middle\">COLOR<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">WHITE<\/td><td style=\"text-align:center;vertical-align:middle\">WHITE<\/td><\/tr><tr><td colspan=\"2\" style=\"text-align:center;vertical-align:middle\">DENSITY<\/td><td style=\"text-align:center;vertical-align:middle\">g\/cm<sup>3<\/sup><\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">3.9<\/td><td style=\"text-align:center;vertical-align:middle\">3.7<\/td><\/tr><tr><td colspan=\"2\" style=\"text-align:center;vertical-align:middle\">WATER ABSORPTION<\/td><td style=\"text-align:center;vertical-align:middle\">%<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">0<\/td><td style=\"text-align:center;vertical-align:middle\">0<\/td><\/tr><tr><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">MECHANICAL PROPERTIES<\/td><td style=\"text-align:center;vertical-align:middle\">3 POINT BENDING STRENGTH<\/td><td style=\"text-align:center;vertical-align:middle\">MPa<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">450<\/td><td style=\"text-align:center;vertical-align:middle\">400<\/td><\/tr><tr><td style=\"text-align:center;vertical-align:middle\">SURFACE ROUGHNESS Ra<\/td><td style=\"text-align:center;vertical-align:middle\">\u03bcm<\/td><td><\/td><td style=\"text-align:center;vertical-align:middle\">0.1<\/td><td style=\"text-align:center;vertical-align:middle\">0.3<\/td><\/tr><tr><td rowspan=\"3\" style=\"text-align:center;vertical-align:middle\">THERMAL<br>PROPERTIES<\/td><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">THERMAL<br>EXPANSION COEFFICIENT<\/td><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">10<sup>-6<\/sup>\/\u2103<\/td><td style=\"text-align:center;vertical-align:middle\">RT\uff5e400\u2103<\/td><td style=\"text-align:center;vertical-align:middle\">6.2<\/td><td style=\"text-align:center;vertical-align:middle\">6.8<\/td><\/tr><tr><td style=\"text-align:center;vertical-align:middle\">RT\uff5e800\u2103<\/td><td style=\"text-align:center;vertical-align:middle\">7.5<\/td><td style=\"text-align:center;vertical-align:middle\">7.8<\/td><\/tr><tr><td style=\"text-align:center;vertical-align:middle\">THERMAL<br>CONDUCTIVITY<\/td><td style=\"text-align:center;vertical-align:middle\">W\/(m\u30fbK)<\/td><td style=\"text-align:center;vertical-align:middle\">20\u2103<\/td><td style=\"text-align:center;vertical-align:middle\">32<\/td><td style=\"text-align:center;vertical-align:middle\">23<\/td><\/tr><tr><td rowspan=\"6\" style=\"text-align:center;vertical-align:middle\">ELECTRICAL PROPERTIES<\/td><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">DIELECTRIC<br>CONSTANT<\/td><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">1MHz<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">9.2<\/td><\/tr><tr><td style=\"text-align:center\">10GHz<\/td><td style=\"text-align:center;vertical-align:middle\">9.8<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><\/tr><tr><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">DIELECTRICTANGENT<\/td><td rowspan=\"2\" style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">1MHz<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">10\u00d710<sup>-4<\/sup><\/td><\/tr><tr><td style=\"text-align:center\">10GHz<\/td><td style=\"text-align:center;vertical-align:middle\">3\u00d710<sup>-5<\/sup><\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><\/tr><tr><td style=\"text-align:center;vertical-align:middle\">VOLUME RESISTIVITY<\/td><td style=\"text-align:center;vertical-align:middle\">\u03a9\u30fbcm<\/td><td style=\"text-align:center;vertical-align:middle\">25\u2103<\/td><td style=\"text-align:center;vertical-align:middle\">&gt;10<sup>14<\/sup><\/td><td style=\"text-align:center;vertical-align:middle\">&gt;10<sup>14<\/sup><\/td><\/tr><tr><td style=\"text-align:center;vertical-align:middle\">WITHSTANDING VOLTAGE<\/td><td style=\"text-align:center;vertical-align:middle\">kV\/mm<\/td><td style=\"text-align:center;vertical-align:middle\">\u2015<\/td><td style=\"text-align:center;vertical-align:middle\">&gt;20<\/td><td style=\"text-align:center;vertical-align:middle\">&gt;20<\/td><\/tr><\/tbody><\/table><figcaption>\u203bValues are typical, not guaranteed<\/figcaption><\/figure>\n<\/section>\n\n\n\n<section class=\"l-section wp-block-bhw-wp-blocks-wrapper l-wrapper\">\n<h2 class=\"wp-block-heading c-heading _h2\" id=\"guideline\">Design Guidelines<\/h2>\n\n\n\n<figure class=\"wp-block-flexible-table-block-table is-scroll-on-mobile is-style-stripes\"><table class=\"has-fixed-layout\" style=\"width:100%\"><thead><tr><th style=\"text-align:center;vertical-align:middle\"><strong>ITEM<\/strong><\/th><th style=\"text-align:center;vertical-align:middle\"><strong>UNIT<\/strong><\/th><th style=\"text-align:center;vertical-align:middle\"><strong>STANDARD<\/strong> <strong>PROCESSED<\/strong><\/th><\/tr><\/thead><tbody><tr><td style=\"text-align:center\">DIMENSIONS<\/td><td style=\"text-align:center\">mm<\/td><td style=\"text-align:center\">170\u00d7170<\/td><\/tr><tr><td style=\"text-align:center\">THICKNESS<\/td><td style=\"text-align:center\">mm<\/td><td style=\"text-align:center\">0.25\uff5e1.0<\/td><\/tr><\/tbody><\/table><figcaption>\u203bPlease inquire about designs other than those mentioned above<\/figcaption><\/figure>\n<\/section>\n\n\n\n<h2 class=\"wp-block-heading c-heading _h2\" id=\"catalog\">Catalog Download<\/h2>\n\n\n\n<div class=\"wp-block-bhw-wp-blocks-button\"><a class=\"c-button _md\" href=\"https:\/\/sgfm.jp\/f\/NikkoDocumentDownloadEn \" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"c-button__text\"><span class=\"inner\">Catalog Download<\/span><\/span><svg class=\"c-button__icon\" aria-label=\"\u65b0\u898f\u30a6\u30a3\u30f3\u30c9\u30a6\" viewBox=\"0 0 12 12\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M3 3V0.6C3 0.257143 3.25714 0 3.6 0H11.4C11.7429 0 12 0.257143 12 0.6V8.4C12 8.74286 11.7429 9 11.4 9H9V11.4C9 11.7429 8.74286 12 8.4 12H0.6C0.257143 12 0 11.7429 0 11.4V3.6C0 3.25714 0.257143 3 0.6 3H3ZM4.2 3H8.4C8.74286 3 9 3.25714 9 3.6V7.8H10.8V1.2H4.2V3ZM1.2 4.2V10.8H7.8V4.2H1.2Z\" fill=\"currentColor\"><\/path><\/svg><\/a><\/div>\n\n\n\n<section class=\"l-section wp-block-bhw-wp-blocks-wrapper l-wrapper\">\n<h2 class=\"wp-block-heading c-heading _h2\" id=\"use\">Product Use Cases<\/h2>\n\n\n\n<ul class=\"wp-block-list c-list u-stack-2\">\n<li>Thin-Film Fine-Pitch Wiring Substrate<\/li>\n\n\n\n<li>Plasma Generation Equipment<\/li>\n\n\n\n<li>Chip Resistors<\/li>\n<\/ul>\n<\/section>\n","protected":false},"featured_media":0,"parent":4054,"menu_order":57,"template":"single_ceramics-details.php","format":"standard","class_list":["post-9626","ceramics","type-ceramics","status-publish","format-standard","hentry","en-US"],"_links":{"self":[{"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/ceramics\/9626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/ceramics"}],"about":[{"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/types\/ceramics"}],"version-history":[{"count":8,"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/ceramics\/9626\/revisions"}],"predecessor-version":[{"id":9691,"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/ceramics\/9626\/revisions\/9691"}],"up":[{"embeddable":true,"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/ceramics\/4054"}],"wp:attachment":[{"href":"https:\/\/www.nikko-company.co.jp\/wp-json\/wp\/v2\/media?parent=9626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}