滤波电感NFR21GD4701012L RB751SL CY7C1021B-15ZXI PISM-470M_磁珠/磁环（环型）电感

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电感的单位是亨（H），也常用毫亨（mH）或微亨（uH）做单位。1H=1000mH，1H=1000000uH。

       电感只能对非稳恒电流起作用，它的特点两端电压正比于通过他的电流的瞬时变化率（导数），比例系数就是它的“自感”

       电感起作用的原因是它在通过非稳恒电流时产生变化的磁场，而这个磁场又会反过来影响电流，所以，这么说来，任何一个导体，只要它通过非稳恒电流，就会产生变化的磁场，就会反过来影响电流，所以任何导体都会有自感现象产生

       在主板上可以看到很多铜线缠绕的线圈，这个线圈就叫电感，电感主要分为磁心电感和空心电感两种，磁心电感电感量大常用在滤波电路，空心电感电感量较小，常用于高频电路。

       电感的特性与电容的特性正好相反，它具有阻止交流电通过而让直流电顺利通过的特性。电感的特性是通直流、阻交流，频率越高，线圈阻抗越大。电感器在电路中经常和电容一起工作，构成LC滤波器、LC振荡器等。另外，人们还利用电感的特性，制造了阻流圈、变压器、继电器等。


【电感器的种类】

    按照外形，电感器可分为空心电感器(空心线圈)与实心电感器(实心线圈)。按照工作性质，电感器可分为高频电感器(各种天线线圈、振荡线圈)和低频电感器(各种扼流圈、滤波线圈等)。按照封装形式，电感器可分为普通电感器、色环电感器、环氧树脂电感器、贴片电感器等。按照电感量，电感器可分为固定电感器和可调电感器。

电感的作用：通直流，阻交流
通直流:所谓通直流就是指在直流电路中,电感的作用就相当于一根导线,不起任何作用.
阻交流:在交流电路中,电感会有阻抗,即XL,整个电路的电流会变小,对交流有一定的阻碍作用

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ZJY51R5-2PL

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ZJYS5102-2PT

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ZJSR5101-682

ZJYS51R5-2P

ZJYS5104-2PL

ZJY51R5-M4PA

ZJYS51R5-2P-G

ZJYS5104-2PLT

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原装现货库存欢迎来电垂询

1 薄膜电感
尺寸:0402 0603 感量范围;
0402 0.2nH-33nH 0603 1nH-100nH 公差:0.1nH-5% Q:0603测试频率300MHz时为15
0402测试频率在500MHz时为13 直流阻抗为0.35R和0.1R
2 叠层电感
尺寸:0402 0603 感量范围:0402 1nH-120nH 0603 1.5nH-220nH
公差:0.5 5% 10% Q;0402测试频率为100MHz时为8 0603值为8,为12(不同的感量,测试频率一样时,Q值不一样)
3 绕线电感(陶瓷)
尺寸: 1008 1206

感量范围:
0402 1nH-68nH
0603 1.6nH-390nH
0805 2.7nH-2.7uH
1206 6.8nH-1.2uH
1008 5.6nH-15uH
测试频率为100MHz时的Q(MIN)值:
0402:16-25
0603 :16-40
0805:16-80
1206:30-55
1008:15-65
某些感是的Q值测量测试频率不是100MHz
特殊绕线电感:高流型;高Q型,低厚度型