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TDK MMZ1005A102ET000是一款专为高频电磁干扰(EMI)抑制设计的1005公制(0402英制)片式磁珠,属于TDK经典EMI滤波系列产品。其核心优势在于紧凑尺寸与针对性高频抑制性能的平衡,适配对空间和干扰控制要求严格的电子设备。
该磁珠的关键参数直接指向EMI滤波的实际效果,各参数意义如下:
磁珠阻抗是感抗与电阻的矢量和,直接决定对特定频率干扰的抑制能力。MMZ1005A102ET000在100MHz频段(常见射频干扰区间) 提供1kΩ有效阻抗,±25%误差符合工业级EMI滤波的常规精度要求。需注意:磁珠阻抗随频率呈“先升后降”趋势,100MHz是其阻抗峰值附近的典型测试点,适配该频段内干扰抑制需求。
DCR是磁珠直流通路的电阻,直接影响信号功耗与直流衰减。1.25Ω低DCR设计在250mA额定电流下功耗仅78.125mW,不会对直流信号造成明显衰减,同时降低自身发热风险。
额定电流指磁珠可持续稳定工作的最大直流电流,超过该值会导致磁芯饱和(阻抗急剧下降)或过热损坏。250mA额定值适配小信号电路(如传感器、射频前端)的电流需求,若电路电流更大需选型更高额定电流型号。
单通道设计,可直接串联在单路信号/电源线上实现针对性滤波,无需组合串并联,简化电路设计。
MMZ1005A102ET000采用1005公制封装(对应英制0402),具体尺寸为:
小尺寸适配高密度PCB布局(如智能手机、智能手表射频模块),兼容标准回流焊工艺,焊接可靠性符合TDK工业级标准。
该磁珠环境参数覆盖多数恶劣场景:
适配以下领域的EMI滤波需求:
该产品以紧凑尺寸、针对性高频抑制和宽温适应性,成为小信号电路EMI滤波的高性价比选择,广泛应用于消费电子、汽车电子等领域。
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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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