{"id":1520,"date":"2025-04-20T09:49:00","date_gmt":"2025-04-20T01:49:00","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=1520"},"modified":"2025-10-22T17:20:27","modified_gmt":"2025-10-22T09:20:27","slug":"what-is-a-thermistor","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/","title":{"rendered":"What is a thermistor\uff1f"},"content":{"rendered":"<h2>O que \u00e9 um termistor?<\/h2>\n\n\n\n<p>Os termistores s\u00e3o sensores <a href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-resistor\/\">resistores <\/a>cujo valor de resist\u00eancia muda com a temperatura. Os diferentes coeficientes de temperatura s\u00e3o divididos em termistor de coeficiente de temperatura positivo (PTC thermistor, ou seja, termistor de coeficiente de temperatura positivo) e termistor de coeficiente de temperatura negativo (NTC thermistor, ou seja, termistor de coeficiente de temperatura negativo). O valor da resist\u00eancia dos termistores de coeficiente de temperatura positivo aumenta com o aumento da temperatura e o valor da resist\u00eancia dos termistores de coeficiente de temperatura negativo diminui com o aumento da temperatura, e eles pertencem a dispositivos semicondutores. Eles s\u00e3o amplamente usados na detec\u00e7\u00e3o de temperatura, compensa\u00e7\u00e3o de temperatura, prote\u00e7\u00e3o contra sobrecorrente e outros cen\u00e1rios.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#Thermistor_symbols_and_application_formulas\" >S\u00edmbolos de termistores e f\u00f3rmulas de aplica\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#How_Thermistors_Work\" >Como os termistores funcionam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#What_is_the_function_of_a_thermistor%EF%BC%9F\" >What is the function of a thermistor\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#Do_thermistors_have_polarity\" >Os termistores t\u00eam polaridade?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#Precautions_for_using_thermistors\" >Precau\u00e7\u00f5es ao usar termistores<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topfastpcba.com\/pt\/what-is-a-thermistor\/#Application_Areas\" >\u00c1reas de aplica\u00e7\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Thermistor_symbols_and_application_formulas\"><\/span>S\u00edmbolos de termistores e f\u00f3rmulas de aplica\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The resistance-temperature characteristics of a thermistor can be approximated by the following formula: R=R0exp{B(1\/T-1\/T0)}: R: resistance at temperature T(K), Ro: resistance at temperature T0, (K), B: B value, *T(K)=t(\u00baC)+273.15. The B value of the thermistor is not constant, and the size of its variation varies depending on the material composition. The size of the change varies depending on the material composition, and the maximum can even be up to 5K\/\u00b0C. Therefore, when applying Eq. 1 in a large temperature range, there will be a certain error between the measured value and the actual value. In this case, if the value of B in Eq. 1 is calculated as a function of temperature as shown in Eq. 2, the error between the measured value and the actual value can be reduced and considered to be approximately equal.<br>BT = CT2 + DT + E, a f\u00f3rmula acima C, D e E s\u00e3o constantes. Al\u00e9m disso, a flutua\u00e7\u00e3o do valor B causada por diferentes condi\u00e7\u00f5es de produ\u00e7\u00e3o far\u00e1 com que a constante E mude, mas as constantes C e D permanecem inalteradas. Portanto, ao explorar a quantidade de flutua\u00e7\u00e3o no valor B, somente a constante E precisa ser considerada. C\u00e1lculo das constantes C, D, E. As constantes C, D, E podem ser calculadas a partir dos dados (temperatura, valor da resist\u00eancia) de 4 pontos (T0, R0). (T1, R1), (T2, R2) e (T3, R3), calculados pelas equa\u00e7\u00f5es 3 a 6. Primeiro, encontre B1, B2, B3 da Eq. 3 com base nos valores de resist\u00eancia de T0 e T1, T2, T3 e, em seguida, substitua-os em cada uma das equa\u00e7\u00f5es a seguir.<br>Resistance value calculation example: Try to find the resistance value of a thermistor with a resistance value of 5(k\u03a9) at 25\u00b0C and a B deviation of 50(K) at 10\u00b0C to 30\u00b0C based on the resistance-temperature characteristic table. Steps (1) From the resistance-temperature characteristics table, find the constants C, D, and E. To=25+273.15T1=10+273.15T2=20+273.15T3=30+273.15 (2) Substitute BT=CT2+DT+E+50 to find BT.(3) Substitute the values for R=5exp {(BT1\/T -1\/298.15)}, and find R. *T:10+273.15 to 30+273.15.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"687\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor-1.jpg\" alt=\"\" class=\"wp-image-1523\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor-1.jpg 637w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor-1-278x300.jpg 278w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor-1-150x162.jpg 150w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Thermistors_Work\"><\/span>Como os termistores funcionam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os termistores operam com base nas caracter\u00edsticas de resist\u00eancia \u00e0 temperatura dos materiais semicondutores:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Classifica\u00e7\u00e3o e caracter\u00edsticas:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coeficiente positivo de temperatura (PTC): A resist\u00eancia aumenta com o aumento da temperatura (usado principalmente para prote\u00e7\u00e3o contra sobrecorrente e fus\u00edveis com rearme autom\u00e1tico)<\/li>\n\n\n\n<li>Coeficiente de temperatura negativo (NTC):A resist\u00eancia diminui com o aumento da temperatura (tipo mais comum, amplamente usado para detec\u00e7\u00e3o de temperatura)<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Princ\u00edpio operacional:<br>Em condi\u00e7\u00f5es normais, os termistores permanecem em um estado est\u00e1vel com resist\u00eancia pr\u00f3xima aos valores de temperatura ambiente. Quando a temperatura ambiente e a corrente atingem a zona cr\u00edtica (Regi\u00e3o C), o dispositivo entra em um estado metaest\u00e1vel em que a dissipa\u00e7\u00e3o de calor se aproxima da gera\u00e7\u00e3o de calor, o que pode desencadear a ativa\u00e7\u00e3o.<br>Principais recursos operacionais:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Em temperatura ambiente constante, o tempo de resposta diminui exponencialmente com o aumento da corrente<\/li>\n\n\n\n<li>Temperaturas ambientes mais altas resultam em tempos de resposta mais r\u00e1pidos e correntes de reten\u00e7\u00e3o\/acionamento mais baixas<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Mecanismo de prote\u00e7\u00e3o:<br>Durante a opera\u00e7\u00e3o normal:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A temperatura do termistor se aproxima da temperatura ambiente<\/li>\n\n\n\n<li>A baixa resist\u00eancia apresenta imped\u00e2ncia insignificante para a corrente do circuito<br>Durante condi\u00e7\u00f5es de falha:<\/li>\n\n\n\n<li>A sobrecorrente causa aumento da dissipa\u00e7\u00e3o de energia<\/li>\n\n\n\n<li>A temperatura sobe al\u00e9m do limite de comuta\u00e7\u00e3o (Ts)<\/li>\n\n\n\n<li>A resist\u00eancia aumenta drasticamente (ordens de magnitude)<\/li>\n\n\n\n<li>A corrente do circuito \u00e9 rapidamente reduzida a n\u00edveis seguros<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Recursos avan\u00e7ados do Polymer PTC:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A temperatura de comuta\u00e7\u00e3o ajust\u00e1vel (Ts) permite o ajuste preciso da sensibilidade<\/li>\n\n\n\n<li>Opera\u00e7\u00e3o de dupla fun\u00e7\u00e3o: prote\u00e7\u00e3o simult\u00e2nea contra sobretemperatura e sobrecorrente<\/li>\n\n\n\n<li>Excelente flexibilidade de design para solu\u00e7\u00f5es de prote\u00e7\u00e3o personalizadas<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Vantagens de desempenho:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Resposta r\u00e1pida a condi\u00e7\u00f5es anormais (normalmente milissegundos)<\/li>\n\n\n\n<li>Reinicializa\u00e7\u00e3o autom\u00e1tica ap\u00f3s a elimina\u00e7\u00e3o da falha<\/li>\n\n\n\n<li>Estabilidade e confiabilidade de longo prazo<\/li>\n\n\n\n<li>Tamanho compacto para aplica\u00e7\u00f5es com restri\u00e7\u00f5es de espa\u00e7o<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_function_of_a_thermistor%EF%BC%9F\"><\/span>What is the function of a thermistor\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"760\" height=\"642\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor2.jpg\" alt=\"\" class=\"wp-image-1524\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor2.jpg 760w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor2-300x253.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor2-150x127.jpg 150w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Medi\u00e7\u00e3o e controle de temperatura<\/strong><br>Sensores de temperatura: Os termistores s\u00e3o comumente usados em sensores de temperatura para obter informa\u00e7\u00f5es sobre a temperatura de um ambiente ou objeto medindo as altera\u00e7\u00f5es em seu valor de resist\u00eancia. Por exemplo, em sistemas de controle de temperatura, os termistores detectam mudan\u00e7as de temperatura e as convertem em sinais el\u00e9tricos que s\u00e3o transmitidos ao controlador para regular o equipamento de aquecimento ou resfriamento.<br>Medi\u00e7\u00e3o de alta precis\u00e3o:O termistor NTC tem um alto coeficiente de temperatura e uma resposta sens\u00edvel \u00e0 mudan\u00e7a de temperatura, podendo ser usado para medi\u00e7\u00e3o de temperatura de alta precis\u00e3o, como term\u00f4metro digital e compensa\u00e7\u00e3o de termopar.<\/li>\n\n\n\n<li><strong>Prote\u00e7\u00e3o contra superaquecimento<\/strong><br>Termistor PTC: Quando a temperatura excede o limite definido, o valor da resist\u00eancia do termistor PTC aumenta drasticamente, limitando assim a corrente ou cortando a fonte de alimenta\u00e7\u00e3o para evitar danos ao equipamento devido ao superaquecimento. Por exemplo, ele \u00e9 usado para prote\u00e7\u00e3o do motor em ferramentas el\u00e9tricas, ventiladores el\u00e9tricos e outros equipamentos.<br>Termistores NTC:Em circuitos de bateria ou de fonte de alimenta\u00e7\u00e3o, os termistores NTC podem ser usados para monitorar a temperatura e acionar o mecanismo de prote\u00e7\u00e3o contra superaquecimento.<\/li>\n\n\n\n<li><strong>Limita\u00e7\u00e3o de corrente e supress\u00e3o de surtos<\/strong><br>Termistor NTC: Quando a fonte de alimenta\u00e7\u00e3o \u00e9 inicializada, o valor frio e de alta resist\u00eancia do termistor NTC suprime a corrente de irrup\u00e7\u00e3o e protege o circuito contra choques. \u00c0 medida que a temperatura aumenta, o valor da resist\u00eancia diminui e a corrente se estabiliza gradualmente.<br>Termistor PTC:Na prote\u00e7\u00e3o contra sobrecorrente, o valor da resist\u00eancia do termistor PTC aumenta com o aumento da corrente, limitando assim a corrente e atuando como um fus\u00edvel de autorrecupera\u00e7\u00e3o.<\/li>\n\n\n\n<li><strong>Compensa\u00e7\u00e3o de temperatura<\/strong><br>Estabilidade do circuito: Os termistores podem ser usados para compensar o efeito das mudan\u00e7as de temperatura no desempenho do circuito. Por exemplo, em transistores, osciladores ou baterias, o desvio de temperatura \u00e9 neutralizado por altera\u00e7\u00f5es na resist\u00eancia do termistor, melhorando a precis\u00e3o e a confiabilidade do circuito.<br>Instrumentos de precis\u00e3o:Em equipamentos que exigem opera\u00e7\u00e3o est\u00e1vel, os termistores ajudam a manter uma temperatura operacional constante.<\/li>\n\n\n\n<li><strong>Outros aplicativos<\/strong><br>Aquecimento de temperatura constante: Os termistores PTC podem ser usados como elementos de aquecimento, como aquecedores de ar, ferros de solda, etc., com ambas as fun\u00e7\u00f5es de controle de temperatura.<br>Filtragem e supress\u00e3o de ru\u00eddo:Em alguns circuitos de alta frequ\u00eancia, os termistores podem ser usados para suprimir ru\u00eddos e sinais de ultrapassagem.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_thermistors_have_polarity\"><\/span>Os termistores t\u00eam polaridade?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os termistores n\u00e3o t\u00eam polaridade.A principal caracter\u00edstica dos termistores \u00e9 que eles mudam seu valor de resist\u00eancia \u00e0 medida que a temperatura externa muda, e essa caracter\u00edstica torna os termistores muito importantes em v\u00e1rias aplica\u00e7\u00f5es. Especificamente, os termistores s\u00e3o categorizados em dois tipos: coeficiente de temperatura positivo (PTC) e coeficiente de temperatura negativo (NTC):<br>NTC thermistors: Their resistance value decreases significantly with increasing temperature, with a typical rate of change of 3% to 7% per degree Celsius. For example, an NTC sensor with a resistance value of 10k\u03a9 at room temperature (25\u00b0C) may drop to 3k\u03a9~5k\u03a9 when the temperature rises to 50\u00b0C.<br>Termistor PTC:Seu valor de resist\u00eancia aumenta com a temperatura.Essa caracter\u00edstica torna os termistores PTC muito \u00fateis em aplica\u00e7\u00f5es como prote\u00e7\u00e3o contra sobrecorrente, compensa\u00e7\u00e3o de temperatura etc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Precautions_for_using_thermistors\"><\/span>Precau\u00e7\u00f5es ao usar termistores<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os seguintes pontos devem ser observados ao usar termistores:<br>Conex\u00e3o do circuito: Os termistores precisam ser conectados a circuitos externos, como uma fonte de alimenta\u00e7\u00e3o e um amplificador de sinal. Ao fazer a conex\u00e3o, \u00e9 necess\u00e1rio verificar cuidadosamente o diagrama do circuito para garantir que a polaridade da fonte de alimenta\u00e7\u00e3o esteja correta e que os fios de sinal estejam conectados corretamente para evitar danos causados por choque de sobrecorrente.<br>Faixa de temperatura:Os termistores t\u00eam sua pr\u00f3pria faixa de temperatura espec\u00edfica, e modelos diferentes t\u00eam faixas de temperatura diferentes.Ao usar o termistor, voc\u00ea deve verificar sua faixa de temperatura para garantir que ele seja usado nas condi\u00e7\u00f5es de temperatura adequadas, para evitar danos ou medi\u00e7\u00f5es imprecisas causadas por exceder a faixa aplic\u00e1vel.<br>Press\u00e3o mec\u00e2nica: os termistores s\u00e3o sens\u00edveis \u00e0 press\u00e3o mec\u00e2nica, portanto, devem ser manuseados com cuidado durante a instala\u00e7\u00e3o ou o uso para evitar press\u00e3o mec\u00e2nica excessiva ou impacto, de modo a n\u00e3o afetar a precis\u00e3o e a estabilidade da medi\u00e7\u00e3o.<br>Impacto ambiental: Os termistores devem evitar o ambiente de mudan\u00e7as r\u00e1pidas de temperatura para evitar o processo de envelhecimento. Ao mesmo tempo, deve-se prestar aten\u00e7\u00e3o \u00e0 impermeabilidade, \u00e0 resist\u00eancia \u00e0 umidade, \u00e0 resist\u00eancia ao frio e a outras propriedades, para garantir resultados de medi\u00e7\u00e3o est\u00e1veis e precisos<br>Measurement conditions: Measurement should ensure that the ambient temperature is close to 25\u2103 to ensure the credibility of the test. Measurement power shall not exceed the specified value to avoid the error caused by the current thermal effect<br>Indu\u00e7\u00e3o eletromagn\u00e9tica:O valor da resist\u00eancia do termistor \u00e9 grande e suscet\u00edvel \u00e0 indu\u00e7\u00e3o eletromagn\u00e9tica.Um fio blindado ou dois cabos podem ser torcidos em um para reduzir o impacto da indu\u00e7\u00e3o eletromagn\u00e9tica.<br>Calibra\u00e7\u00e3o regular:Calibre o termistor regularmente para garantir a precis\u00e3o da medi\u00e7\u00e3o.Evite danos mec\u00e2nicos, como flex\u00e3o excessiva ou impacto.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"798\" height=\"478\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor1.jpg\" alt=\"\" class=\"wp-image-1525\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor1.jpg 798w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor1-300x180.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor1-768x460.jpg 768w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/thermistor1-150x90.jpg 150w\" sizes=\"auto, (max-width: 798px) 100vw, 798px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Application_Areas\"><\/span>\u00c1reas de aplica\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os termistores s\u00e3o amplamente utilizados em v\u00e1rios campos devido \u00e0s suas caracter\u00edsticas exclusivas de sensibilidade \u00e0 temperatura:<br>Medi\u00e7\u00e3o e controle de temperatura: Usado para medi\u00e7\u00e3o e controle de temperatura em eletrodom\u00e9sticos, autom\u00f3veis, equipamentos m\u00e9dicos, automa\u00e7\u00e3o industrial e outros campos. Por exemplo, temperatura do motor do autom\u00f3vel, temperatura do sistema de ar condicionado, temperatura do aquecedor de \u00e1gua, etc.<br>Monitoramento ambiental: para monitoramento da temperatura interna, sistemas de controle clim\u00e1tico, monitoramento da temperatura de estufas, etc.<br>Prote\u00e7\u00e3o de equipamentos eletr\u00f4nicos: usado em equipamentos eletr\u00f4nicos para prote\u00e7\u00e3o contra superaquecimento, quando a temperatura do equipamento ultrapassa o limite definido, o valor da resist\u00eancia do termistor muda, acionando o mecanismo de prote\u00e7\u00e3o para evitar o superaquecimento e os danos ao equipamento.<br>\u00c1rea m\u00e9dica: usado em term\u00f4metros, monitores de press\u00e3o arterial, equipamentos de infus\u00e3o e outros equipamentos m\u00e9dicos para medir e monitorar a temperatura<br>Automa\u00e7\u00e3o industrial: para controle de temperatura de fornos, medi\u00e7\u00e3o de l\u00edquidos, sistemas de resfriamento, etc.<br>Gerenciamento de energia: usado em sistemas de gerenciamento de energia, como aquecedores solares de \u00e1gua, sistemas de energia solar, etc., para monitorar e controlar a gera\u00e7\u00e3o e o uso de energia.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Os termistores s\u00e3o resistores de sensor cujo valor de resist\u00eancia muda com a temperatura. De acordo com os diferentes coeficientes de temperatura, eles s\u00e3o divididos em termistor de coeficiente de temperatura positivo (PTC thermistor, ou seja, Positive Temperature Coefficient thermistor) e termistor de coeficiente de temperatura negativo (NTC thermistor, ou seja, Negative Temperature Coefficient thermistor)<\/p>","protected":false},"author":2,"featured_media":1521,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[143],"class_list":["post-1520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-thermistor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a thermistor\uff1f - Topfastpcba<\/title>\n<meta name=\"description\" content=\"Thermistors are sensor resistors whose resistance value changes with temperature. 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