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alt="貼片電阻，合金電阻，保險絲產品新聞中心" src="/u_file/2206/photo/2206/2022062314432921.jpeg" width="100%"></a></div>  <div id="nav"> <div class="wrap"> <div id="side"> <a href="/info/category-4/" class="trans "> 公司新聞 </a> <a href="/info/category-5/" class="trans on"> 行業新聞 </a> <a href="/info/category-6/" class="trans "> 產品新聞 </a> <a href="/faq/" class="trans "> 知識解答 </a> </div> </div> </div>  <div id="info-detail"> <div class="wrap"> <div class="top"> <h1 class="title"> 分流器電阻材料與傳統繞線精密電阻介紹 </h1> <div class="meg"> <div class="firsts">發布時間：2022-12-30</div> <div class="">已被瀏覽：<span>439</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" 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style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;"><a href="http://www.forsakring-online.com/products/category-424/">分流器電阻</a>也是很常用的，甚至一度是高準確設備的主打電阻。采用的電阻絲材料現在有三種：</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">康銅，比較古老，耐熱但溫度系數不太好，與銅的熱電動勢較高。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">錳銅，有精密錳銅，盡管熱但溫度不太高但溫度系數很小，與銅的熱電動勢小，是廣泛采用的線繞電阻材料。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">鎳鉻鋁銅合金，也可以簡稱鎳鉻電阻合金，溫度系數最小，材料比較硬，焊接性能不太好。塊電阻，又叫金屬箔電阻，國外廠家以Vishay為代表，是在陶瓷基片粘上合金電阻層然后無感光刻，不僅采用了鎳鉻電阻合金材料，而且陶瓷襯底做進一步溫度補償，使得溫度系數非常小，很多能做到<1ppm/℃。<br /> <br /> 推薦</span><a href="http://www.forsakring-online.com/products/category-424/"><span style="color:#FF0000;">分流器電阻選型</span></a><span style="color:#4d4d4d;">：</span></span><br /> </span></span></span><a href="http://www.forsakring-online.com/products/category-424/"><img src="/u_file/2012/photo/2012/2020121716383695.jpeg" /></a><br /> <span style="line-height:200%;"><span style="font-size:16px;"><span style="font-family:微軟雅黑,arial;"><span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">下面分別對這些繞線精密電阻做一介紹。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">1.普通金屬膜電阻，體積一般比較小，電阻膜比較薄，溫度系數和老化一般，除了高阻(>1M)和低阻抗(<5)以外，1%可以保證。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">2.綠袍電阻。這是對80年代中后期出現的一種金屬膜電阻的稱呼，因為外觀呈深綠色而得名，見于MF12和MF14萬用表中。但根據自己的實測，性能一般，老化、偏差和溫度系數都與紅袍電阻相差很大。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">3.紅袍電阻，代號RJJ，高穩定低溫度系數精密金屬膜，體積大，性能很好，經過自己的測試，多年的電阻，老化很少有超過0.5%的，溫度系數都在30ppm/℃左右。請注意，紅袍電阻還有一種是普通</span></span><span style="letter-spacing:0.0000pt;font-weight:normal;text-transform:none;font-style:normal;background:rgb(255,255,255);">精度</span><span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">的，代號RJ，性能一般。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">4.一般線繞電阻，采用錳銅或康銅電阻絲，非密封(只上漆)，由于線徑一般比較粗因此老化指標不錯，但溫度系數不算太好，一般是15ppm/℃到35ppm/℃之間。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">5.精密線繞，電阻絲一般采用精密錳銅，密封后穩定性得到提高，實際測試了大量的0.01%電阻，絕大多數數年后仍然能保持在0.02%之內。溫度系數也因為選材和工藝達到較高水平，大約是5ppm/℃到20ppm/℃之間。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">6.低TC(溫度系數)線繞電阻，常見于老式國外(比如Fluke)各種精密儀器中，采用鎳鉻電阻合金，溫度系數非常低，一般在1ppm/℃到5ppm/℃之間，有的電阻每一只都標明了實測溫度系數。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">7.全密封線繞，電阻絲材料同上，但采用金屬殼密封(引線是后焊接的)完全杜絕了潮濕和氧化因此穩定性很高，達到8ppm/年左右，溫度系數也大多在1ppm/℃之內，廣泛用于老一代高等級計量儀器和標準電阻中。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">8.塑封塊電阻。由于采用鎳鉻電阻合金和補償技術，溫度系數可以做的非常低，甚至<1ppm/℃。但該電阻由于密封不太好因此老化特性不是很好，只能保證25ppm/年，典型值12.5ppm/年。</span></span><br /> <br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">9.金封塊電阻，這是目前最高等級的電阻，內部結構同上但采用金屬陶瓷密封(外形類似晶振)，徹底杜絕外界老化因素，同時零溫度系數技術使得溫度系數達到很難測量出來的程度。老化典型值2ppm/年，有的達到0.5ppm/年以下。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">應該看到，即便是同一類的電阻，不同廠家、不同時代的產品，差別也很大，這里只是盡量找一個典型的范圍而已。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">精密電阻</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">選擇電阻要看萬用表的等級，一般采用等級的1/4或1/5，比如2.5級的選0.5%，1級的選0.2%或0.25%。</span></span><br /> <span style="letter-spacing:0.0000pt;text-transform:none;font-style:normal;background:rgb(255,255,255);"><span style="color:#4d4d4d;">需提供電阻、精密電阻、貼片電阻、插件電阻、圓柱電阻、圓柱體電阻、柱狀電阻、無引腳電阻、高精密電阻器、插件電阻封裝、插件電阻定制可以咨詢銷售。</span></span><br /> </span></span></span><br /> </div> <div id="page" class="wow fadeInUp wrap"> <div class="next fr">下一篇 : <a href="/info/news-i02185i1.html" title="貼片精密電阻參數特點">貼片精密電阻參數特點</a></div> <div class="clear"></div> </div> <div class="returns"> <a href="/info/category-5/page-1.html" class="returns" title="返回列表"><img oncontextmenu="return false;" src="/images/return.png" alt="返回列表" title="返回列表" /> 返回列表</a> </div> <div class="relate-title">相關新聞</div> <div class="relate-list"> <div class="list fl"> <div class="list-title fl text-over"><span>» </span><a href="/info/news-i02185i1.html" title="貼片精密電阻參數特點">貼片精密電阻參數特點</a></div> <div class="list-time fr text-right">2022-12-30</div> <div class="clear"></div> </div> <div class="list fl"> <div class="list-title fl text-over"><span>» </span><a 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