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MOSFETS </a> </div> </div> <div class="rig_con"> <div class="top"> <h1 class="title"> 淺談TVS二極管三大應用特點及注意事項 </h1> <div class="meg"> <div class="firsts">發布時間：2021-08-05</div> <div class="">已被瀏覽：<span>1820</span>次</div> <div class="shape"> <span>分享到：</span> <div class="bdsharebuttonbox" style="display:inline-block;vertical-align:middle;"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_sqq" data-cmd="sqq" title="分享到QQ好友"></a><a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a><a href="#" class="bds_renren" data-cmd="renren" title="分享到人人網"></a></div> <script> window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)]; </script> </div> </div> </div> <div class="con"> <span style="font-family:新宋體,arial;"><span style="font-size:16px;"><span style="line-height:200%;">前言：<a href="http://www.forsakring-online.com/products/category-470/"><span style="color:#FF0000;"><strong>瞬態電壓抑制器</strong></span></a>，簡稱<a href="http://www.forsakring-online.com/products/category-470/"><span style="color:#FF0000;"><strong>TVS二級管</strong></span></a>，是一種二極管形式的高性能保護設備，有的文獻上也稱為TVP、AJTVS、SAJTVS等。當TVS二極管的兩極受到反向瞬態高能量沖擊時，它可以以10-12秒的速度將兩極之間的高阻抗變成低阻抗，并吸收數千瓦的浪涌功率。將兩極之間的電壓鉗位在預定值，有效地保護電子線路中的精密部件，以免損壞各種浪涌脈沖。TVS二級管具有響應時間快、瞬態功率大、漏電流低、破壞電壓偏差小、容易控制鉗位電壓、無破壞極限、體積小等優點。目前廣泛應用于計算機系統、通信設備、交流/DC電源、汽車、家用電器、儀器儀表等領域。<br /> <img alt="淺談TVS二極管三大應用特點及注意事項" src="/u_file/2104/photo/2104/2021040717342770.jpeg" /><br /> 在實際應用電路中，處理瞬時脈沖損壞設備的最佳方法是從敏感設備中引出瞬時電流。為了達到這個目的，TVS在電路板上與受保護的電路并聯。這樣，當瞬時電壓超過電路的正常工作電壓時，TNS會破壞雪崩，從而為瞬時電流提供超低阻抗通路。結果，瞬時電流通過TVS被打開，從而避免被保護的設備。在電壓恢復正常值之前，保護電路始終保持截止電壓。此后，瞬時脈沖結束后，TVS二極管自動恢復到高電阻狀態，整個電路進入正常電壓狀態。那么TVS二極管應用特點是什么？并且需要注意什么？相信很多人都不清楚，下面小編為大家一一解答如下。<br /> <br /> TVS二極管應用三大特點<br /> （1）在信號和電源線上添加TVS二極管可以防止微處理器或單片機瞬時脈沖，如靜電放電效應、交流電源浪涌和開關電源噪聲引起的故障；<br /> <br /> （2）靜電放電效應可以釋放10000伏和60A以上的脈沖，并可以持續10毫秒。然而，一般的TTL設備在遇到超過30毫秒的10伏脈沖時會損壞。使用TVS二極管可以有效吸收會損壞設備的脈沖，消除總線間開關造成的干擾；<br /> <br /> （3）將TVS二極管放置在信號線和接地之間，可以避免數據和控制總線受到不必要的噪聲影響；<br /> <br /> TVS二極管使用時主營事項<br /> （1）瞬時變壓的吸收功率(峰值)與瞬時變壓脈沖寬度之間的關系。手冊只給出特定脈寬下的吸收功率(峰值)，而實際線路中的脈沖寬度是不可預測的，應提前估計。應該減少寬脈沖的數量；<br /> <br /> （2）保護小電流負載可以有意識地在線路中增加限流電阻。只要限流電阻的電阻值適當，就不會影響線路的正常運行，但限流電阻對干擾產生的電流會大大降低。因此，可以選擇峰值功率較小的TVS二極管來保護小電流負載線路；<br /> <br /> （3）抑制反復出現的瞬變電壓，特別值得注意的是TVS二極管的穩定平均功率是否在安全范圍內；<br /> <br /> 拓展相關資料：<br /> 深圳順?？萍加邢薰敬鞸OCAY碩凱TVS瞬態抑制二極管產品詳情如下<br /> <br /> 規格系列：1.5KE系列、1.5SMC系列、15KPA系列、20KPA系列、30KPA系列、3KP系列、5.0SMDJ系列、5KP系列、8.0SMDJ系列、8KP系列、LCE系列、P4KE系列、P4SMA系列、P6KE系列、P6SMB系列、S61089系列、SACB系列、SAC系列、SA系列、SM8S系列、SMAJ系列、SMBJ系列、SMCJ系列、SMDJ系列、SMF系列<br /> <br /> 產品外形規格：以貼片型和引線型為主，根據封裝和內部結構，可分為軸向引線二極管、直插TVS(多線保護)、貼片型、組件型和大功率模塊型。<br /> <br /> 產品電壓：3.3V -600V<br /> <br /> 產品特點：反應速度快(ps級)、體積小、脈沖功率大、鉗位電壓低等，其10/1000μs波脈沖功率為400W~30KW，脈沖峰值電流為0.52A~544A的破壞電壓為6.8V~550V的系列值，容易使用各種電壓的電路。<br /> <br /> 產品作用：并聯于電路中。當電路正常工作時，它處于截止狀態(高電阻狀態)，不影響電路的正常工作。當電路異常過壓并達到其破壞電壓時，它很快從高電阻狀態變成低電阻狀態。在為瞬時電流提供低阻抗導通路徑的同時，將異常的高壓鉗制在安全水平以內，保護被保護的IC和線路的異常過壓消失時，恢復到高電阻狀態，電路正常工作。<br /> <br /> 產品應用：TVS二極管廣泛應用于半導體和敏感部件的保護，通常用于二次電源和信號電路的保護、防靜電等。目前已廣泛應用于計算機系統、通訊設備、交/直流電源、汽車、電子鎮流器、家用電器、儀器儀表（電度表）、RS232/422/423/485、 I/O、LAN、ISDN 、ADSL、USB、MP3、PDAS、GPS、CDMA、GSM、數字照相機的保護、共模/差模保護、RF耦合/IC驅動接收保護、電機電磁波干擾抑制、聲頻/視頻輸入、傳感器/變速器、工控回路、繼電器、接觸器噪音的抑制等各個領域。<br /> <br /> 以上內容主要介紹TVS二極管三大應用特點及主營事項，如需要TVS二極管相關產品請留言聯系或<span style="color:#FF0000;">撥打：0755-28100016；</span>海量TVS二極管現貨庫存，規格齊全。歡迎來咨詢價格或拿樣測試。<br /> <br /> 深圳順?？萍加邢薰臼且患乙源頌橹鞯碾娮釉骷?、半導體器件、保護器件的整合供應商，主營TVS瞬態抑制二極管、ESD靜電保護器、GDT陶瓷氣體放電管、TSS半導體放電管、NTC熱敏電阻、壓敏電阻、保險絲、合金電阻、貼片電阻、精密電阻、晶圓電阻、貼片保險絲、自恢復保險絲、貼片電容、鉭電容、電解電容、鋁電解電容、超級電容、連接器等相關產品線，品牌可選華德、碩凱、薩瑞微、億能、特思嘉、基美(KEMET)、天二、旺詮、大毅、村田、太誘、TDK、AVX、威世、風華、華新科、三瑩、國巨、立隆、厚聲、光頡、順絡、麥捷、禾伸堂等知名品牌。</span></span></span> </div> <div id="page" class="wow fadeInUp wrap"> <div class="page-btn prev">上一篇 : <a href="/faq/news-i01570i1.html">講解“TVS二極管原理”及選用時“考慮因素”有哪些</a></div> <div class="page-btn next">下一篇 : <a href="/faq/news-i01416i1.html">談談TVS瞬態抑制二極管及壓敏電阻的特點與優勢</a></div> </div> <div class="returns"> <a 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