{"id":5733,"date":"2024-11-29T18:01:40","date_gmt":"2024-11-29T09:01:40","guid":{"rendered":"https:\/\/dtttek.com\/?p=5733"},"modified":"2025-01-14T12:26:04","modified_gmt":"2025-01-14T03:26:04","slug":"what-is-ntc-thermistor-b-value-and-how-to-calculate-it","status":"publish","type":"post","link":"https:\/\/dtttek.com\/de\/what-is-ntc-thermistor-b-value-and-how-to-calculate-it\/","title":{"rendered":"What Is NTC Thermistor B-Value And How To Calculate It"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5733\" class=\"elementor elementor-5733\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d40f833 e-flex e-con-boxed e-con e-parent\" data-id=\"d40f833\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d3ef79b elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"d3ef79b\" data-element_type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tInhaltsverzeichnis\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d3ef79b\" aria-expanded=\"true\" aria-label=\"Open table of contents\" data-no-translation-aria-label=\"\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__d3ef79b\" aria-expanded=\"true\" aria-label=\"Close table of contents\" data-no-translation-aria-label=\"\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__d3ef79b\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd681b5 elementor-widget elementor-widget-text-editor\" data-id=\"fd681b5\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><p>When you\u00a0get to know Negative Temperature Temperature (NTC thermistor), it is inevitable that you will come across a series of parameters related to it. Imagine how unfortunate it would be if the thermistor does not work properly or even malfunctions because the parameters do not correspond to each other. Among these various parameters, B-value is one of the key ones.<\/p><p>B-value is the key factor in understanding and using NTC thermistors. In general, this parameter\u00a0is the material coefficient. The B-value of a thermistor is defined as the ratio of the difference between the natural logarithm of the zero-power resistance value at two temperatures to the difference between the inverses of those two temperatures.\u00a0NTC thermistors typically have B-values in the <strong>2000K-6000K<\/strong> range, which varies depending on the application.<\/p><p>This article\u00a0will look at what the B-value of an NTC thermistor is, why it is important, and how to calculate it. The rest of the parts\u00a0will also derive the formula for deriving the B-value as well as ways to get the B-value wrong.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d8b43e e-flex e-con-boxed e-con e-parent\" data-id=\"8d8b43e\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-088fa77 elementor-widget elementor-widget-text-editor\" data-id=\"088fa77\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h2>What Is The B-Value Of Ntc Thermistor<\/h2><p>Thermistor B-value is a key parameter that affects the performance of NTC thermistors.<strong> It is a material constant (thermal index) and can be calculated by measuring the resistance of an NTC temperature sensor at 25\u00b0C and 50\u00b0C (or 85\u00b0C).<\/strong> Understanding the B-value of a thermistor is key to achieving accurate temperature measurements and selecting the right sensor for your application.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65c82ea e-flex e-con-boxed e-con e-parent\" data-id=\"65c82ea\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-35efa58 elementor-widget elementor-widget-text-editor\" data-id=\"35efa58\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3>Chart Of B-value<\/h3><p>The B-value is expressed in Kelvin temperature (K). Different temperatures exhibit different resistance values, with negative temperature coefficient thermistors (NTCs) having lower resistance values at higher temperatures.<\/p><p>Thermistor B value is expressed mathematically as follows:<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c0e614c e-flex e-con-boxed e-con e-parent\" data-id=\"c0e614c\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f7a238 elementor-widget elementor-widget-image\" data-id=\"1f7a238\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"368\" height=\"312\" src=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/B\u503c.png\" class=\"attachment-large size-large wp-image-5762\" alt=\"\" srcset=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/B\u503c.png 368w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/B\u503c-300x254.png 300w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/B\u503c-14x12.png 14w\" sizes=\"(max-width: 368px) 100vw, 368px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4efd6e6 e-flex e-con-boxed e-con e-parent\" data-id=\"4efd6e6\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9bc15f elementor-widget elementor-widget-text-editor\" data-id=\"a9bc15f\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Why Is B-value Important For Ntc Thermistors<\/h2><p>Determining a B value involves measuring resistance at 25\u00b0C and 50\u00b0C (or 85\u00b0C). A higher B-value means that the resistance drops faster as the temperature increases, indicating greater sensitivity. Conversely, a smaller B-value means a slower response. It is important to note that the B-value is not a constant in practice; it increases slightly with increasing temperature.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-87c1794 e-flex e-con-boxed e-con e-parent\" data-id=\"87c1794\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ab614a9 elementor-widget elementor-widget-text-editor\" data-id=\"ab614a9\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>The Importance of Temperature Sensing Accuracy<\/strong><\/h3><p>Accuracy is an important factor in the merit of a temperature sensor. From automotive and industrial systems to healthcare and consumer electronics, wherever temperature sensors are used, accuracy needs to be ensured.<\/p><p>Accurate temperature monitoring ensures that systems operate within safe and optimal limits, preventing overheating, inefficiency and even catastrophic failure. For example, in medical devices such as thermometers and imaging equipment, accurate temperature data is critical for reliable diagnosis and treatment. High-accuracy sensors improve energy efficiency, safety and performance. And accuracy is intrinsically linked to the thermistor&#8217;s B-value, a key parameter that determines how a thermistor&#8217;s resistance changes with temperature.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b50c44f e-flex e-con-boxed e-con e-parent\" data-id=\"b50c44f\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dad2114 elementor-widget elementor-widget-text-editor\" data-id=\"dad2114\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h2><strong>How B value affect accuracy of NTC thermistor<\/strong><\/h2><p>As you can see from the previous section, B-value and accuracy are closely related. A higher B-value NTC thermistor increases sensitivity, resulting in more accurate temperature readings.<\/p><p><strong>E.g B25\/50=3435K\u00b11.0%<\/strong><\/p><p><strong>B value 3435K at T1=25\u2103, T2=50\u2103, accuracy 1%.<\/strong><\/p><p>The following factors demonstrate how B-value affects accuracy:<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b5bca94 e-flex e-con-boxed e-con e-parent\" data-id=\"b5bca94\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22572bc elementor-widget elementor-widget-text-editor\" data-id=\"22572bc\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>Sensitivity<\/strong><\/h3><p>The B-value of an NTC thermistor affects the sensitivity of the measurement. In general, higher B-values enable more accurate temperature measurements.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a67341e e-flex e-con-boxed e-con e-parent\" data-id=\"a67341e\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ceebe06 elementor-widget elementor-widget-text-editor\" data-id=\"ceebe06\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>Linearit\u00e4t<\/strong><\/h3><p>The thermistor B-value also affects the linearity of the resistance-temperature relationship. Linearity and accuracy can be improved by stabilizing the NTC thermistor B value over the entire operating range.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ffd07b1 e-flex e-con-boxed e-con e-parent\" data-id=\"ffd07b1\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-151c3c6 elementor-widget elementor-widget-text-editor\" data-id=\"151c3c6\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>Temperaturbereich<\/strong><\/h3><p>The accuracy of the mapping between resistance and temperature is highly dependent on the B-value of the thermistor. An incorrect B-value may:<\/p><ul><li>Result in accurate readings at the calibration point but different readings at other temperatures.<\/li><li>Result in non-linear readings.<\/li><\/ul><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cd8f4df e-flex e-con-boxed e-con e-parent\" data-id=\"cd8f4df\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7baa092 elementor-widget elementor-widget-text-editor\" data-id=\"7baa092\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><p>This error can lead to serious errors, especially in critical environments where accuracy is essential.<\/p><p>As for products designed for temperature measurement, compensation, and surge suppression resistance, the larger the B value, the better.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-711d499 e-flex e-con-boxed e-con e-parent\" data-id=\"711d499\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7136c9c elementor-widget elementor-widget-text-editor\" data-id=\"7136c9c\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h2>How To Calculate The B-value Of Ntc Thermistor<\/h2><p>At this point, you know that the thermistor B value is a key parameter that affects the accuracy of temperature measurement. Then, it is necessary to understand how to calculate the NTC thermistor Beta value. Therefore, a method is needed to specify not only the resistance at a specific temperature (i.e., the nominal resistance), but also the shape of the curve through that point. Most datasheets provide Beta (\u03b2) values in K. The B values of common NTC materials range is from 3000K to 5000K. But sometimes these B values don&#8217;t seem obvious. For example, is a 3500K thermistor a suitable replacement for a 3650K thermistor?<\/p><p>This article provides 2 generalized algorithms for measuring B-values.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8a12583 e-flex e-con-boxed e-con e-parent\" data-id=\"8a12583\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-42d15b0 elementor-widget elementor-widget-text-editor\" data-id=\"42d15b0\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>1. Basic two-point method<\/strong><\/h3><p>The B-value of an NTC thermistor is calculated using resistance measurements at two different temperatures:<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dd3055a e-flex e-con-boxed e-con e-parent\" data-id=\"dd3055a\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1aaf82f elementor-widget elementor-widget-image\" data-id=\"1aaf82f\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"145\" src=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/\u5c4f\u5e55\u622a\u56fe-2024-11-26-163944-3-300x145.png\" class=\"attachment-medium size-medium wp-image-5778\" alt=\"\" srcset=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/\u5c4f\u5e55\u622a\u56fe-2024-11-26-163944-3-300x145.png 300w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/\u5c4f\u5e55\u622a\u56fe-2024-11-26-163944-3-18x9.png 18w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/\u5c4f\u5e55\u622a\u56fe-2024-11-26-163944-3.png 579w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f3ab0fd e-flex e-con-boxed e-con e-parent\" data-id=\"f3ab0fd\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c3381b2 elementor-widget elementor-widget-text-editor\" data-id=\"c3381b2\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><p>Notes:<\/p><p><strong>T1<\/strong> is the first temperature point in Kelvin=<strong>Temperature 1 (K)<\/strong><\/p><p><strong>T2<\/strong> is the second temperature point in Kelvin=<strong>Temperature 2 in (K)<\/strong><\/p><p><strong>Rt1<\/strong> is the thermistor resistance at temperature <strong>T1 in ohms<\/strong><\/p><p><strong>Rt2<\/strong> is the thermistor resistance at temperature <strong>T2 in ohms<\/strong><\/p><p>This calculation method is relatively simple. However, it assumes that the NTC thermistor Beta value is constant over the entire temperature range, which can lead to inaccurate measurements and ultimately to incorrect accuracy.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0b53d0d e-flex e-con-boxed e-con e-parent\" data-id=\"0b53d0d\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-29a0cae elementor-widget elementor-widget-text-editor\" data-id=\"29a0cae\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h3><strong>2. Steinhart-Hart Equation<\/strong><\/h3><p>What&#8217;s better than knowing the resistance of two points on a curve? Well, obviously, it&#8217;s better to know <strong>the resistance at 3 points<\/strong>, and that&#8217;s exactly what the Steinhart-Hart coefficients (<strong>A, B, and C<\/strong>) are for. With these parameters, it is possible to more accurately approximate the curve at the entire operating temperature. This equation is given below:<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6580551 e-flex e-con-boxed e-con e-parent\" data-id=\"6580551\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40f0a23 elementor-widget elementor-widget-image\" data-id=\"40f0a23\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"78\" src=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/steinhart-hart-equation-removebg-preview-300x78.jpg\" class=\"attachment-medium size-medium wp-image-5782\" alt=\"\" srcset=\"https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/steinhart-hart-equation-removebg-preview-300x78.jpg 300w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/steinhart-hart-equation-removebg-preview-768x199.jpg 768w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/steinhart-hart-equation-removebg-preview-18x5.jpg 18w, https:\/\/dtttek.com\/wp-content\/uploads\/2024\/11\/steinhart-hart-equation-removebg-preview.jpg 786w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7fce0e8 e-flex e-con-boxed e-con e-parent\" data-id=\"7fce0e8\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3341168 elementor-widget elementor-widget-text-editor\" data-id=\"3341168\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><p>This method allows for a more accurate calculation of the NTC thermistor Beta value and gives a better indication of the thermistor&#8217;s behavior at different temperatures.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0b29066 e-flex e-con-boxed e-con e-parent\" data-id=\"0b29066\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec0d3cc elementor-widget elementor-widget-text-editor\" data-id=\"ec0d3cc\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"H9KhdaGvyoRTNhxR24FcCn53nde\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div data-page-id=\"C6kkdGtLXo7xAIxN9n9cxdCenRb\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><h2><strong>Abschluss<\/strong><\/h2><p>The thermistor B-value is critical for temperature measurement of NTC thermistors. It affects accuracy, sensitivity and linearity, so measuring an accurate B-value is critical to selecting the right thermistor for a particular application.<\/p><p>The B-value of an NTC thermistor determines the thermistor&#8217;s performance under various conditions. There are generally two ways to make this measurement. The simpler one allows easy calculation of the result. However, when it comes to parameters that are currently constant, a more precise method (such as the Steinhart-Hart equation) is required to ensure accurate readings over a wide temperature range.<\/p><p>Understanding calculation methods and B-value variations can help achieve accurate temperature readings and improve overall system performance. For high-precision applications, understanding and selecting the correct thermistor B-value is critical to achieving reliable and accurate temperature measurements.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Table of Contents When you\u00a0get to know Negative Temperature Temperature (NTC thermistor), it is inevitable that you will come across a series of parameters related to it. Imagine how unfortunate it would be if the thermistor does not work properly or even malfunctions because the parameters do not correspond to each other. Among these various&hellip;&nbsp;<a href=\"https:\/\/dtttek.com\/de\/what-is-ntc-thermistor-b-value-and-how-to-calculate-it\/\" rel=\"bookmark\">Weiterlesen \u00bb<span class=\"screen-reader-text\">What Is NTC Thermistor B-Value And How To Calculate It<\/span><\/a><\/p>","protected":false},"author":2,"featured_media":7105,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","om_disable_all_campaigns":false,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-5733","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v26.5) - 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