{"id":319614,"date":"2023-11-27T16:54:42","date_gmt":"2023-11-27T16:54:42","guid":{"rendered":"\/forum\/forums\/reply\/319614\/"},"modified":"2023-11-27T16:54:42","modified_gmt":"2023-11-27T16:54:42","slug":"319614","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/319614\/","title":{"rendered":"Reply To: How to identify the Threshold Voltage of transistor model?"},"content":{"rendered":"<p>&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;Hello Julio,&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;According to the HiSim manual, &lt;\/span&gt;&lt;\/p&gt;&lt;p style=&#8221;padding-left: 40px;&#8221;&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;&#8221;Different from the drift approximation (see for example Eq. (30)), the drift-di usion approximation does&lt;br&gt;not require a threshold voltage parameter Vth for describing device performances. The MOSFET device&lt;br&gt;parameters such as the oxide thickness TOX and the substrate doping concentration NSUBC&lt;br&gt;determine the complete MOSFET behavior including the subthreshold characteristics automatically and&lt;br&gt;consistently.&#8221;&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;I&#8217;m not at libert to share the specific equations or specification directly (if so, we would publish them in the online help) but they can be downloaded from the the HiSim Research Center:&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;<a href=\"https:\/\/www.hisim.hiroshima-u.ac.jp\/index.php?id=121\">HiSIM Download | HiSIM Research Center (hiroshima-u.ac.jp)<\/a>&lt;br&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;You mentioned a data sheet, but your screen cap just shows our default model parameter set. Please note, that those values are set to mach the parameter defaults as defined by the HiSim model writers, and are not indicative of any physical semiconductor process. Typically you would be given in a data sheet, or more likely the model would be pre setup in a SPICE file, by the semiconductor model vendor themselves.&nbsp;&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;Best regards,&lt;\/span&gt;&lt;\/p&gt;&lt;p&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;-Dan&lt;\/span&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-319614","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/319614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/319614\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=319614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}