穿心电容是什么？
冯高岑
更新时间：2015-05-23 12:00
补充：
穿心电容和贴片电容他们使用的范围各是什么？各有什么特点和作用，哪一种更好一些，穿心电容的价格一般是多少，在哪里买便宜？
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置顶回答
穿心电容是一种三端电容，但与普通的三端电容相比，由于它直接安装在金属面板上，因此它的接地电感更小，几乎没有引线电感的影响，另外，它的输入输出端被金属板隔离，消除了高频耦合，这两个特点决定了穿心电容具有接近理想电容的滤波效果。穿心电容自电感较普通电容小得多，故而自谐振频率很高。同时，穿心式设计，也有效地防止了高频信号从输入端直接耦合到输出端。这种低通高阻的组合，在 1GHz 频率范围内，提供了极好的抑制效果。 最简单的穿心结构是由内外电极和陶瓷构成的一个( C 型)或两个电容( Pi 型)。
价格在：3元到5元之间；
价格在：3元到5元之间；
3个回答
您好：穿心电容是三端电容，两个引脚和一个接地端，两个引脚之间就是和普通电容一样接法，但接地端面积比较大，接地端安装方式有焊接式也有压接接触式。
正是有接地端的存在使穿心电容接地电感非常小，引线电感非常小，输入输出端被接地端金属板隔离消除了高频耦合，使穿心电容具有接近理想电容的滤波效果。
正是有接地端的存在使穿心电容接地电感非常小，引线电感非常小，输入输出端被接地端金属板隔离消除了高频耦合，使穿心电容具有接近理想电容的滤波效果。
穿心式电容，其电感较普通电容小得多，故而自谐振频率很高；同时，由于其采用穿心式的安装方式，也有效地防止了高频信号从输入端直接耦合到输出端，因此，这种低通高阻的组合，在 1GHz 频率范围内，提供了极好的抑制效果。
穿心电容主要应用于：,馈通滤波器,低通滤波器,EMI滤波器,信号滤波器,滤波电容器,焊接式馈通滤波器,螺纹式馈通滤波器,树脂密封滤波器,玻璃密封高性能滤波器 标称容量Capacitance ：
10pF,65pF,100pF,470pF,500pF,1000pF,1200pF,1500pF,1750pF,2000pF,2500pF,2700pF,3000pF,3300pF,4700pF,5000pF,5500pF,6800pF,7000pF,9000pF,10000pF,0.01μF,0.012μF,0.015μF,0.018μF,0.022μF,0.025μF,0.027μF,0.028μF,0.045μF,0.050μF,0.056μF,0.075μF,0.08μF,0.1μF,0.15μF,0.21μF,0.3μF,0.75μF,0.8μF,1μF,0.015μF,0.060μF,0.062μF,0.150μF,0.200μF,0.250μF,0.250μF,0.300μF,0.450μF,0.500μF,0.7μF,0.750μF,0.990μF,1.0μF,1.2μF,1.4μF,1.5μF,2.1μF,2.8μF,4.0μF,5.2μF,
穿心电容主要应用于：,馈通滤波器,低通滤波器,EMI滤波器,信号滤波器,滤波电容器,焊接式馈通滤波器,螺纹式馈通滤波器,树脂密封滤波器,玻璃密封高性能滤波器 标称容量Capacitance ：
10pF,65pF,100pF,470pF,500pF,1000pF,1200pF,1500pF,1750pF,2000pF,2500pF,2700pF,3000pF,3300pF,4700pF,5000pF,5500pF,6800pF,7000pF,9000pF,10000pF,0.01μF,0.012μF,0.015μF,0.018μF,0.022μF,0.025μF,0.027μF,0.028μF,0.045μF,0.050μF,0.056μF,0.075μF,0.08μF,0.1μF,0.15μF,0.21μF,0.3μF,0.75μF,0.8μF,1μF,0.015μF,0.060μF,0.062μF,0.150μF,0.200μF,0.250μF,0.250μF,0.300μF,0.450μF,0.500μF,0.7μF,0.750μF,0.990μF,1.0μF,1.2μF,1.4μF,1.5μF,2.1μF,2.8μF,4.0μF,5.2μF,
DEP系列直流馈通滤波器(穿心电容器)主要应用于信号线、直流电源的高频干扰滤波，具有非常好的滤除高频干扰信号的效果。如屏蔽是信号滤波处理、低噪声放大器输入/出线处理。使用时将馈通滤波器安装在金属板上(如面板、金属外壳等)，金属板既做滤波器接地又起到隔离滤波器输入、输出端耦合的作用。 安装形式有螺纹式和直焊式、表贴式三种.
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