電感是(shi)儲能元件，而磁(ci)珠是(shi)能量轉換(huan)（消(xiao)耗）器件。電感多用于(yu)電源濾波(bo)回(hui)路，磁(ci)珠多用于(yu)信號回(hui)路，用于(yu)EMC對策。

磁珠主要(yao)用(yong)于抑(yi)制電磁輻射(she)干擾(rao)，而電感(gan)用(yong)于這方面(mian)則(ze)側(ce)重于抑(yi)制傳導性干擾(rao)。兩(liang)者(zhe)都可用(yong)于處理EMC、EMI問題。

磁珠(zhu)是用來(lai)吸收超高(gao)頻信號(hao)，像一些RF電(dian)(dian)(dian)(dian)路(lu)，PLL，振蕩電(dian)(dian)(dian)(dian)路(lu)，含超高(gao)頻存(cun)儲器電(dian)(dian)(dian)(dian)路(lu)（DDR SDRAM，RAMBUS等）都需要在電(dian)(dian)(dian)(dian)源輸入部分加磁珠(zhu)，而電(dian)(dian)(dian)(dian)感是一種蓄能元件，用在LC振蕩電(dian)(dian)(dian)(dian)路(lu)，中低頻的濾波電(dian)(dian)(dian)(dian)路(lu)等，其應用頻率(lv)范圍很少超過(guo)錯50MHZ。

文章源自：電感，貼片電感、貼片電感代理商