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晨飞资讯</a> » <a href="/Article/tiepiandiangandefenl_1.html">贴片电感的分类介?/a></div>
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贴片电感的分类介?/h3>
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<span>文章出处?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电子有限公?/a></a></span><span>网责任编辑：<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者：<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气?span
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<p> 贴片电感是一个作用在电器中的重要部件,它的主要作用是阻碍电流的变化，但是这种作用与电阻阻碍电流流通作用是有区别的。它还有两个独特的作用就是过滤高频信号和与MOSFET管、电容等组成直流电转换电路。电感性能的好坏，与它所采用的铜线粗细、绕线方式、有无磁芯有关系。贴片电感可分为绕线型、叠层型、编织型和薄膜片式电感器四个类型,<br />
<br />
1.绕线?/p>
<p> 它的特点是电感量范围?mH～H)，电感量精度高，损耗小(即Q?，容许电流大、制作工艺继承性强、简单、成本低等，但不足之处是在进一步小型化?面受到限制。陶瓷为芯的绕线型片电感器在这样高的频率能够保持稳定的电感量和相当高的Q值，因而在高频回路中占据一席之地?br />
TDK的NL系列电感为绕线型?.01~100uH，精?%，高Q值，可以满足一般需求?br />
NLC?适用于电源电路，额定电流可达300mA;NLV型为 高Q值，环保(再造塑?，可与NL互换;NLFC 有磁屏，适用于电源线?/p>
<p> 2.叠层?/p>
<p> 它具有良好的磁屏蔽性、烧结密度高、机械强度好。不足之处是合格率低、成本高、电感量较小、Q值低?br />
它与绕线片式电感器相比有诸多优点：尺寸小，有利于电路的小型化，磁路封闭，不会干扰周围的元器件，也不会受临近元器件的干扰，有利于元器件的高密度安装;一体化结构，可靠性高;耐热性、可焊性好;形状规整，适合于自动化表面安装生产?br />
TDK的MLK型电感，尺寸小，可焊性好，有磁屏，采用高密度设计，单片式结构，可靠性高;MLG型的感值小，采用高频陶瓷，适用于高频电?MLK型工作频?2GHz，高Q，低感?1n~22nH)</p>
<p> 3.编织?/p>
<p> 特点是在1MHz下的单位体积电感量比其它片式电感器大、体积小、容易安装在基片上。用作功率处理的微型磁性元件?/p>
<p> 4.薄膜片式</p>
<p> 具有在微波频段保持高Q、高精度、高稳定性和小体积的特性。其内电极集中于同一层面，磁场分布集中，能确保装贴后的器件参数变化不大，?00MHz以上呈现良好的频率特性?/p>
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