保險絲的熔斷器特性以及分段能力講解（干貨滿滿）_深圳順?？萍?/title> <link href='/static/themes/default/css/global.css' rel='stylesheet' type='text/css' /> <script type='text/javascript' src='/static/js/jq.min.js' ></script> <script type='text/javascript' src='/static/js/plugin/jext/jext.js' ></script> <link href='/static/js/plugin/swiper-4.5/animate.min.css' rel='stylesheet' type='text/css' /> <link href='/static/js/plugin/swiper-4.5/swiper.css' rel='stylesheet' type='text/css' /> <script type='text/javascript' src='/static/js/plugin/swiper-4.5/swiper.js' ></script> <script type='text/javascript' src='/static/js/plugin/wow/wow.min.js' ></script> <script type='text/javascript' src='/static/js/countUp.js' ></script> <script type='text/javascript' src='/static/js/jquery.lazyload.min.js' ></script> <script type='text/javascript' src='/static/themes/default/js/website.js' ></script> <link rel="stylesheet" href="/static/themes/default/css/style.css?v=1654625059">  <script type="text/javascript" charset="utf-8" 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href="/products-list/i-10/" class="tags tagsa trans"> 陶瓷管保險絲 </a> <a href="/products-list/i-17/" class="tags tagsa trans"> 精密貼片電阻 </a> <a href="/products-list/i-21/" class="tags tagsa trans"> 華德合金電阻MSTC系列 </a> <a href="/products-list/i-11/" class="tags tagsa trans"> 玻璃管保險絲 </a> <a href="/products-list/i-18/" class="tags tagsa trans"> 功率貼片電阻 </a> <a href="/products-list/i-22/" class="tags tagsa trans"> 華德合金電阻STE系列 </a> <a href="/products-list/i-14/" class="tags tagsa trans"> 車規貼片電阻 </a> <a href="/products-list/i-20/" class="tags tagsa trans"> 華德合金電阻HTE系列 </a> <a href="/products-list/i-30/" class="tags tagsa trans"> 超小型保險絲 </a> <a href="/products-list/i-19/" class="tags tagsa trans"> 溫度保險絲 </a> <a href="/products-list/i-29/" class="tags tagsa trans"> 保險電阻 </a> <a href="/products-list/i-25/" class="tags tagsa trans"> 晶圓電阻 </a> <a href="/products-list/i-26/" class="tags tagsa trans"> 防浪涌電阻 </a> <a href="/products/i-1/" class="tags tagsa trans"> 合金電阻 </a> <a href="/products/i-2/" class="tags tagsa trans"> 保險絲 </a> <a href="/products/i-3/" class="tags tagsa trans"> 貼片電阻 </a> <a href="/products/i-31/" class="tags tagsa trans"> 貼片電容 </a> <a href="/products-list/i-34/" class="tags tagsa trans"> 村田貼片電容 </a> <a href="/products/i-40/" class="tags tagsa trans"> 靜電保護器件 </a> <a href="/products-list/i-41/" class="tags tagsa trans"> 薩瑞微ESD </a> <a href="/products-list/i-42/" class="tags tagsa trans"> 薩瑞微TVS </a> <a href="/products-list/i-43/" class="tags tagsa trans"> 大毅合金電阻LRP系列 </a> <a href="/products-list/i-44/" class="tags tagsa trans"> 大毅合金電阻LRM系列 </a> </div> <div class="detail"> <span style="font-family:微軟雅黑,arial;"><span style="font-size:16px;"><span style="line-height:200%;">原標題:<strong>保險絲的熔斷器特性以及分段能力講解（干貨滿滿）</strong></span></span></span><br /> <img alt="保險絲" src="/u_file/photo/20200504/784eedc813.jpg" /><br /> <span style="font-family:微軟雅黑,arial;"><span style="font-size:16px;"><span style="line-height:200%;"><strong>一、熔斷特性</strong><br /> 1）也稱作<a href="http://www.cppestcontrol.com/products/i-2/">保險絲</a>的時間-電流特性或I-T特性或安秒特性, 是保險絲最主要的電性能指標，它表明了保險絲在不同過載電流負載下熔斷的時間范圍。 z 當流經保險絲的電流超過額定電流時, 熔體溫度逐漸上升，以至最后保險絲被燒斷,我們把這都歸屬為一種過載狀態。<br /> 2）保險絲需要有一定的過載能力：<br /> UL規范保險絲的最大不熔斷電流是110%In； IEC規范保險絲的最大不熔斷電流是150%In或120%In z 保險絲也要求在超過限量的過載電流時能及時地燒斷。<br /> UL規范保險絲的最小熔斷電流在130%In 左右； IEC規范保險絲的最小熔斷電流在180%In 左右。<br /> 3）根據熔斷特性不同，可以把保險絲分為快速型和延時型等。<br /> 4）快速保險絲常用在阻性電路中，保護一些對電流變動特別敏感的元器件。<br /> 5）延時保險絲常用在電路狀態變化時有較大浪涌電流的感性或容性電路中，它能承受開關機時浪涌脈沖的沖擊，而真正出現故障時仍能較快的斷開電路。<br /> 6）每一條曲線代表了一個規格保險絲的熔斷特性，對應每一個負載電流都能找到它的熔斷時間。<br /> 7）不同類型保險絲具有不同形狀的特性曲線。<br /> 時間/電流特性曲線最好地描繪了保險絲的過載性能，供設計師選用保險絲規格時主要的參考。<br /> 時間-電流特性表<br /> 通常規定用曲線中的幾個關鍵點來考核保險絲的過載性能。是對保險絲進行質量評判或驗收時的主要依據。<br /> <strong>二、分斷能力---Ir</strong><br /> 1）分斷能力也稱為最大分斷能力或短路分斷能力或遮斷電流。<br /> 2）分斷能力是保險絲最主要的安全指標。它表明了在規定的電壓下, 保險絲能安全地切斷的最大電流。<br /> 3）當流經保險絲的電流相當大以至短路的時侯，仍要求保險絲能安全分斷電路，且不帶來任何破壞性。<br /> 4）當超過額定分斷電流值時, 保險絲有可能出現破碎，爆炸，噴濺，引起周圍人身或其他元器件的燃燒和破壞等不安全現象。<br /> 5）保險絲的分斷能力取決于保險絲的結構和所用的材質, 一般來說低分斷能力保險絲大部份都是玻璃殼體的, 高分斷能力保險絲通常有陶瓷殼體, 其中許多還填充有純凈顆粒狀石英材料。<br /> 6）按照常規, 當被保護系統是直接聯接到電源輸入電路和保險絲被置于電源輸入部份時, 一定要使用高分斷能力保險絲。<br /> 7）在大部分二次電路中, 特別是電壓低于電源電壓時, 選用低分斷能力保險絲就足以能勝任了。<br /> <strong>三、熔化熱能值—I2t</strong><br /> 1）熔斷器的熔化熱能值(If2t)是指熔體熔斷所需要的能量值, 通常被用于熔斷器承受浪涌能力的技術指標,其中 I為過載電流，t為熔斷時間 z 電路中出現浪涌時所釋放出來的能量值(Ir2t)。<br /> 2）原則: 選用熔斷器時必須考慮 If2t>Ir2t, 即熔斷器的熔化熱能應大于浪涌電流釋放的熱能。<br /> 3）熔斷器的熔斷時間跟電流產生的熱量, 散熱條件及熔斷器的熱容特性等都有關,許多因素都會影響熔斷器的熔斷時間,所以熔斷器在不同的分斷電流或分斷時間會有不同的If2t,也就是說If2t并不是一個常數。<br /> 4）能量/時間曲線最好地描繪了保險絲的熔化熱能變化情況，供設計師選用保險絲耐脈沖能力時主要的參考。<br /> 5）耐脈沖沖擊次數。<br /> 6）當If2t > Ir2t時,熔斷器應能承受脈沖的沖擊,不會被熔斷但會受到一些損傷,從而略微降低它的If2t。<br /> 7）通過計算和選擇 If2t 和Ir2t的關系,可以知道熔斷器能夠承受的脈沖次數,反過來說需要熔斷器能夠承受多少次以上的浪涌沖擊,就必須選擇熔斷器的 If2t與電路脈沖的Ir2t關系.<br /> 8）熔斷器的If2t 和Ir2t的大概關系<br /> Ir2t <= 30% If2t 100,000次<br /> Ir2t <= 38% If2t 10,000次<br /> Ir2t <= 48% If2t 1,000次<br /> 深圳市<a href="http://www.cppestcontrol.com/">順?？萍?/a>有限公司代理銷售華德全系列貼片保險絲，溫度保險絲，陶瓷管保險絲，玻璃管保險絲，塑料保險絲以及電力保險絲與合金金品電阻，大量現貨銷售，歡迎咨詢合作。<br /> 標簽:保險絲、熔斷器、保險絲熔斷器特性、保險絲熔斷器分段能力、順?？萍?/span></span></span> 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class="attr fl "> 安規：齊全 </div> <div class="attr fl "> 材質：陶瓷 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-16/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.2s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/3d8f113a7172fb8c382fcf796c50d6ff.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">低阻值貼片電阻</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0402~2512 </div> <div class="attr fl "> 阻值：2mR~990mR </div> <div class="attr fl "> 功率：0.125W~3W </div> <div class="attr fl "> 精度：0.5%,1%,5% </div> <div class="attr fl w100"> 溫漂：100ppm及其他 </div> <div class="attr fl w100"> 材質：厚膜電阻,薄膜電阻 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-17/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.3s" data-wow-duration="2s"> <div class="img m-pic"> <img 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<div class="attr fl w100"> 精度：0.1%,0.5%,1%,5% </div> <div class="attr fl w100"> 溫漂：100ppm及其他 </div> <div class="attr fl w100"> 材質：厚膜電阻,薄膜電阻 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-22/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.5s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/9c56177cacd8b04a4c17858db6198e6a.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">華德合金電阻STE系列</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0603~4527 </div> <div class="attr fl "> 阻值：2mR~750mR </div> <div class="attr fl "> 功率：0.5W~5W </div> <div class="attr fl "> 精度：0.5%，1% </div> <div class="attr fl "> 溫漂：50ppm </div> <div class="attr fl "> 材質：陶瓷合金 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-14/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.6s" 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電流：100mA~10A </div> <div class="attr fl "> 電壓：125V~250V </div> <div class="attr fl "> 特性：一次性 </div> <div class="attr fl "> 安規：認證齊全 </div> <div class="attr fl "> 材質：塑料 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-19/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.8s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/e218575befe15df8fca8109a1d020d43.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">溫度保險絲</div> <div class="brief clear-both"> <div class="attr fl w100"> 尺寸范圍：4.3*11~6*6*2 </div> <div class="attr fl "> 電流：2A~15A </div> <div class="attr fl "> 電壓：250V </div> <div class="attr fl "> 特性：一次性 </div> <div class="attr fl "> 安規：認證齊全 </div> <div class="attr fl "> 材質： </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-4/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="0.9s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/2161c7528e53d7e860c56beb3b6b459c.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">天二合金電阻MA系列</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：1206~4527 </div> <div class="attr fl "> 阻值：0.2mR~1R </div> <div class="attr fl "> 功率：0.5W~4W </div> <div class="attr fl "> 精度：0.5%，1% </div> <div class="attr fl "> 溫漂：50ppm </div> <div class="attr fl "> 材質：金屬合金 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-28/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/b5ffcfb4edf5abeb605e4cc34181ce1c.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">排阻，貼片排阻</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0402~1206 </div> <div class="attr fl "> 阻值：所有阻值 </div> <div class="attr fl "> 功率：0.125W~0.25W </div> <div class="attr fl "> 精度：1%,5% </div> <div class="attr fl w100"> 溫漂：100ppm及其他 </div> <div class="attr fl "> 材質：厚膜電阻 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-5/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.1s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/54aafab6962c3e5603811eac5b0cdcc7.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">天二合金電阻MR系列</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0805~4527 </div> <div class="attr fl "> 阻值：0.2mR~750mR </div> <div class="attr fl "> 功率：0.5W~4W </div> <div class="attr fl "> 精度：0.5%，1% </div> <div class="attr fl "> 溫漂：50ppm </div> <div class="attr fl "> 材質：金屬合金 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-29/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.2s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/8826b157f07885c853dc0f74ef3c5387.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">保險電阻</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0204~0309 </div> <div class="attr fl "> 阻值：1R~2K </div> <div class="attr fl "> 功率：1/16W~3W </div> <div class="attr fl "> 精度：0.5%，1%，5% </div> <div class="attr fl w100"> 溫漂：200ppm及其他 </div> <div class="attr fl "> 材質： </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-25/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.3s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/faa674d5748c66fb9050cdb7449a8f69.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">晶圓電阻</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：0204~0207 </div> <div class="attr fl "> 阻值：系列阻值 </div> <div class="attr fl "> 功率：0.25W~2W </div> <div class="attr fl w100"> 精度：0.1%,0.5%,1%,5% </div> <div class="attr fl "> 溫漂：75ppm及其他 </div> <div class="attr fl w100"> 材質：炭膜晶圓電阻與金屬膜晶圓電阻 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-26/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.4s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/41e785cf04a7e4a2c7a3b9e4c1b5ec57.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">防浪涌電阻</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸：0201~2512 </div> <div class="attr fl w100"> 精度：±0.01%、±0.05%、±0.1%、±0.25%、±0.5%、±1% </div> <div class="attr fl w100"> 功率：1/32W、1/16W、1/10W、1/8W、1/5W、1/4W、1/2W等 </div> <div class="attr fl w100"> 阻值范圍：1~3M可選 </div> <div class="attr fl w100"> TCR(溫度系數)：±5、±10、±15、±25、±50PPM/℃ </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products/i-31/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.5s" data-wow-duration="2s"> <div class="img m-pic"> <img src=""> </div> <div class="bot"> <div class="title trans text-over">貼片電容</div> <div class="brief clear-both"> <div class="attr fl "> </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-34/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.6s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/b595ff460d37fdad5f99a7a3050d4791.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">村田貼片電容</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：01005~2220 </div> <div class="attr fl "> 容值：0.1PF~330UF </div> <div class="attr fl "> 耐壓值：4V~2KV </div> <div class="attr fl w100"> 精度：1%,2%,5%,10%,20% </div> <div class="attr fl w100"> 材質：COG，X7R，X5R等 </div> <div class="attr fl "> 材質：陶瓷 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-35/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.7s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/66d3dec91f378175a96ced53f2ee247b.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">三星貼片電容</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：01005~2220 </div> <div class="attr fl "> 容值：0.1PF~330UF </div> <div class="attr fl "> 耐壓值：4V~2KV </div> <div class="attr fl w100"> 精度：1%,2%,5%,10%,20% </div> <div class="attr fl w100"> 材質：COG，X7R，X5R等 </div> <div class="attr fl "> 材質：陶瓷 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-36/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.8s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/9a9b988d87b2abcb6ecf4619780077da.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">國巨貼片電容</div> <div class="brief clear-both"> <div class="attr fl "> 尺寸范圍：01005~2220 </div> <div class="attr fl "> 容值：0.1PF~330UF </div> <div class="attr fl "> 耐壓值：4V~2KV </div> <div class="attr fl w100"> 精度：1%,2%,5%,10%,20% </div> <div class="attr fl w100"> 材質：COG，X7R，X5R等 </div> <div class="attr fl "> 材質：陶瓷 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products/i-40/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="1.9s" data-wow-duration="2s"> <div class="img m-pic"> <img src=""> </div> <div class="bot"> <div class="title trans text-over">靜電保護器件</div> <div class="brief clear-both"> <div class="attr fl "> </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-41/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="2s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/f4148f8ba3edf1cb93beb640e95528f6.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">薩瑞微ESD</div> <div class="brief clear-both"> <div class="attr fl "> 特性：常規/低容 </div> <div class="attr fl "> 尺寸：貼片/插腳 </div> <div class="attr fl "> 電流：2A-400A </div> <div class="attr fl "> 電壓:3.3V-36V </div> <div class="attr fl w100"> 標準：靜電標準IEC61000-4-2/浪涌標準IEC61000-4-5 </div> </div> <div class="detail trans">了解詳情 <img src="/images/img31.png"></div> </div> </a> <a href="/products-list/i-42/" class="swiper-slide item fl trans wow fadeInUp" data-wow-delay="2.1s" data-wow-duration="2s"> <div class="img m-pic"> <img src="/tmp/thumbnail/4a9568add9e56e69fda87325c02d5800.338x178.0.jpg"> </div> <div class="bot"> <div class="title trans text-over">薩瑞微TVS</div> <div class="brief clear-both"> <div class="attr fl w100"> 特性：車規AECQ-101/AECQ-200 </div> <div class="attr fl "> 功率：200W-3000W </div> <div class="attr fl w100"> 測試標準：ISO7637-2/ISO16750-2 </div> </div> <div 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