Patch magnetic beads are laminated monolithic structures composed of ferrite materials and conductor coils.
Sintered at high temperature with good fineness and high reliability.
The electrodes at both ends are composed of three layers of silver / nickel / solder, which can meet the needs of reflow soldering and wave soldering.
The main function of magnetic beads is to eliminate RF noise existing in transmission line construction (circuit). DC components are useful signals for demand, while RF RF energy is useless electromagnetic interference transmitted and radiated along the line (EMI to eliminate these unnecessary signal energy, the use of chip magnetic beads to play the role of high-frequency resistance (attenuator) the device allows DC signals to pass through, while filtering out communication signals.

However, the general high frequency signal is above 30MHz. Low-frequency signals are also affected by chip beads. Magnetic beads have high resistivity and permeability, which is equivalent to resistance and inductance in series, but the values of resistance and inductance vary with frequency. Compared with the general inductor, it has very good high-frequency filtering characteristics and resistance at high frequency, so it can maintain a higher impedance in an appropriate wide frequency range, and then improve the effect of FM filtering. As a power filter, inductor can be used. The circuit symbol of magnetic beads is inductance, but in terms of type, we can see that magnetic beads are the same in circuit function, but the frequency characteristics of magnetic beads and inductors are the same, but the magnetic beads are composed of oxygen magnets, and the inductance is composed of magnetic cores and coils. Magnetic beads convert communication signals into thermal energy, and inductors store communication and release it slowly.

贴片磁珠是由铁氧体材料和导体线圈构成的叠层型独石构造。

  高温下烧结而成，细密性好、可靠性高。

   两头的电极由银/镍/焊锡三层构成，可满足再流焊和波峰焊的需求。

  磁珠的功用主要是消除存在于传输线构造(电路)中的RF噪声。直流成分是需求的有用信号，而射频RF能量却是无用的电磁干扰沿着线路传输和辐射(EMI要消除这些不需求的信号能量，运用片式磁珠扮演高频电阻的角色(衰减器)该器材答应直流信号经过，而滤除沟通信号。

但是，一般高频信号为30MHz以上。低频信号也会遭到片式磁珠的影响。磁珠有很高的电阻率和磁导率，等效于电阻和电感串联，但电阻值和电感值都随频率改变。比一般的电感有非常好的高频滤波特性，高频时出现阻性，所以能在适当宽的频率范围内坚持较高的阻抗，然后进步调频滤波作用。作为电源滤波，能够运用电感。磁珠的电路符号即是电感但是类型上能够看出运用的磁珠在电路功用上，磁珠和电感是原理一样的只是频率特性不一样罢了磁珠由氧磁体构成，电感由磁心和线圈构成，磁珠把沟通信号转化为热能，电感把沟通存储起来，缓慢的开释进来。