{"id":29633,"date":"1999-11-04T18:42:01","date_gmt":"1999-11-04T18:42:01","guid":{"rendered":"https:\/\/silvaco.com\/uncategorized\/modeling-bidirectional-thyristors-using-atlas\/"},"modified":"2026-10-15T14:39:14","modified_gmt":"2026-10-15T21:39:14","slug":"modeling-bidirectional-thyristors-using-atlas","status":"publish","type":"post","link":"https:\/\/silvaco.com\/ja\/simulation-standard\/modeling-bidirectional-thyristors-using-atlas\/","title":{"rendered":"Modeling Bidirectional Thyristors Using ATLAS"},"content":{"rendered":"

Modeling Bidirectional Thyristors Using\u00a0ATLAS<\/i><\/h1>\n

Introduction<\/p>\n

Thyristors are semiconductor devices that exhibit multi-stable or bi-stable electrical characteristics, and can be switched between a high-impedance OFF state and a low-impedance ON state. Bidirectional thyristors are particularly useful for ac applications because they operate in the first and third quadrants of the I-V curve, depending on the anode and cathode polarities. It is useful to simulate and predict the important electrical characteristics of these devices, so they can be optimized for figures-of-merit such as breakover voltage, holding current, and switching speed.<\/p>\n

In Part 1, we examine the principal voltage-current characteristics of two diac (diode ac switch) structures: the\u00a0ac trigger diode<\/em>\u00a0and the\u00a0p-n-p-n diode<\/em>\u00a0switch. In the next issue of the\u00a0Simulation Standard<\/em>, we will examine the transient electrical behavior of the\u00a0p-n-p-n diode switch<\/em>\u00a0for large current pulses typically associated with ESD and other discharge phenomena. This characterization typically requires 3-D simulation of z-plane effects due to asymmetry of the electric fields in the device.<\/p>\n

\"\"<\/p>\n

Download Simulation Standard<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Thyristors are semiconductor devices that exhibit multi-stable or bi-stable electrical characteristics, and can be switched between a high-impedance OFF state and a low-impedance ON state. Bidirectional thyristors are particularly useful for ac applications because they operate in the first and third quadrants of the I-V curve, depending on the anode and cathode polarities. It is useful to simulate and predict the important electrical characteristics of these devices, so they can be optimized for figures-of-merit such as breakover voltage, holding current, and switching speed.<\/p>\n","protected":false},"author":12,"featured_media":22304,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[7570],"tags":[],"class_list":["post-29633","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-simulation-standard","entry","has-media"],"yoast_head":"\nModeling Bidirectional Thyristors Using ATLAS - Silvaco<\/title>\n<meta name=\"description\" content=\"Thyristors are semiconductor devices that exhibit multi-stable or bi-stable electrical characteristics, and can be switched between a high-impedance OFF state and a low-impedance ON state\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/silvaco.com\/ja\/simulation-standard\/modeling-bidirectional-thyristors-using-atlas\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modeling Bidirectional Thyristors Using ATLAS\" \/>\n<meta property=\"og:description\" content=\"Thyristors are semiconductor devices that exhibit multi-stable or bi-stable electrical characteristics, and can be switched between a high-impedance OFF state and a low-impedance ON state\" \/>\n<meta property=\"og:url\" content=\"https:\/\/silvaco.com\/ja\/simulation-standard\/modeling-bidirectional-thyristors-using-atlas\/\" \/>\n<meta property=\"og:site_name\" content=\"Silvaco\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SilvacoSoftware\/\" \/>\n<meta property=\"article:published_time\" content=\"1999-11-04T18:42:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-15T21:39:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_nov_1999_a4.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1286\" \/>\n\t<meta property=\"og:image:height\" content=\"1669\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Casey Molver\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:site\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Casey Molver\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/\"},\"author\":{\"name\":\"Casey Molver\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/#\\\/schema\\\/person\\\/2763eb741ca5ac04477fdff50ed84c80\"},\"headline\":\"Modeling Bidirectional Thyristors Using ATLAS\",\"datePublished\":\"1999-11-04T18:42:01+00:00\",\"dateModified\":\"2026-10-15T21:39:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/\"},\"wordCount\":172,\"image\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/silvaco.com\\\/wp-content\\\/uploads\\\/simulationstandard\\\/simstd_nov_1999_a4.jpg\",\"articleSection\":[\"Simulation Standard\"],\"inLanguage\":\"ja\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/\",\"url\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/modeling-bidirectional-thyristors-using-atlas\\\/\",\"name\":\"Modeling Bidirectional Thyristors Using ATLAS - 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