普通铁粉芯

普通铁粉芯
普通铁粉芯是利用传统生产工艺，是由Fe含量99%以上的纯铁粉末其经表面经绝缘包覆，然后采用有机粘合剂混合压制而成的一种磁性材料，由于其材料没有做高温处理，故其使用温度在-65C~+125C。磁导率从10μ~100μ，形状有环型、E型、U型、R棒型等较为复杂的产品。由于铁粉芯内有天然的气隙分布特性，被广泛应用于储能电感器、调光抗流器、EMI噪音滤波器、DC输出/输入滤波器等，是磁粉芯中价格最便宜的一种材料。

铁粉芯一般适用-65℃-+125℃的温度范围，当磁芯处于较高的温度环境中，会使电感和品质因数（Q）永久性的降低，这是由于其在制造过程中使用了有机粘接剂，如环氧树脂等；当使用温度超过150℃ 时，其材料内部的树脂会恶化，使磁芯的损耗增大，降低铁粉芯的使用寿命。这种特性的偏离程度取决于时间、温度、磁芯大小、频率和磁通密度等。

Common working temperature for iron powder core is between -65℃-+125℃.When the working environment rises above 150℃,the organic adhesive(usually epoxy resin) will begin to decompose,resulting in the degradation of the device's performance and shortening of the devices's life.The severity of the degrading depends on the time,temperature,size of the magnetic powder core,working frequency and the flux density.

Matorial (Mix No.) Al Tolerance	-2	-8	-14	-18	-19	-26	-28	-30	-33	-34	-35	-38	-40	-45	-52
Matorial (Mix No.) Al Tolerance	±5%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%	±10%

磁芯是按列出的Al值制造的，每种材料的磁导率仅作参考。在任何情况下，Al值均以在10kHz的频率下及10高斯（1mT）的AC通量密度峰值为依据。环型磁芯是以均匀分隔的完全单层线组作测试的，以尽量降低漏磁的影响。以非均匀分布而少圈数的铁粉磁芯作测试会产生比预期要大的电感读数。E型磁芯以100圈作为测试标准。磁力特性曲线，均有±10%的典型宽限度，而磁芯损耗特征的曲线就有±15%的典型宽限度。

The cores are manufactured to the Al values listed;the permeability for each material is for reference only.In all cases,the Al values are based on peak AC flux density of 10 gauss(1 mT)at a frequency of 10 kHz.The toroidal cores are tested with an evenly-spaced full single-layer winding in order to minimize leakage effects.Iron powder cores tested with a small number of turns which are not evenly distributed will produce higher inductance readings than expected.The E Cores are tested with 100 turns.The Magnetic Characteristic curves shown have a typical tolerance of ±10%.The curves on Core Loss characteristics have a typical tolerance of ±15%.

本公司生产的环形磁芯有环氧树脂涂层，各种涂层在50Hz下的最小介电强度为600Vrms。也可以根据客户的要求提高介电质的强度，涂层可抵抗大多数清洗剂的擦洗，但过度接触某些溶剂会产生不良影响，E型和U型磁芯均经过防锈处理，以防止锈蚀。表面涂层绝缘强度的测试是：将两片导电板分别放在磁粉芯的两个端面，用50Hz,1250V(AC有效电压)的测试电压，时间为5秒钟。

The toroidal and bus bar cores listed in this catalog are coated.All finishes have a minimum dielectric strength of 600 Vrms at 50Hz and resist most cleaning solvents.Extended exposures to certain solvents may have detrimental effects.The toroidal cores can be double or triple coated for greater dielectric strength.The E Cores and the U cores are treated to resist corrosion.

Sendust Cores

Si-Fe^TM Cores

Neu Flux^TM Cores

High Flux Cores

MPP Cores

Iron Powder Cores

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普通铁粉芯