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SZ1005K182CTF是顺络电子(Sunlord)推出的一款小型化贴片磁珠,专为高频电磁干扰(EMI)抑制设计,采用0402封装(公制1005规格),适配高密度PCB布局需求,可在宽温环境下稳定工作,广泛应用于消费电子、汽车电子、工业控制等领域。
该磁珠属于高频滤波型被动元件,核心作用是在100MHz频率附近对干扰信号呈现高阻抗,从而有效抑制该频段的电磁干扰,同时保持较低的直流电阻以减少电路损耗。其设计重点在于平衡“干扰抑制能力”与“直流供电效率”,适合对体积和滤波性能有双重要求的电路场景。
在100MHz频率下,阻抗标称值为1.8kΩ(即1800R),误差范围±25%。此阻抗值针对100MHz左右的射频干扰(如WiFi、蓝牙等2.4GHz以下频段的杂散信号)具有较强的衰减能力,是产品选型的核心参考指标。
直流电阻仅1.8Ω,属于低DCR设计——在额定电流下,磁珠的直流压降可控制在0.18V以内(U=I×R=100mA×1.8Ω),不会过度影响电路的直流供电效率,避免因损耗导致的发热或电压不足问题。
长期工作额定电流为100mA,指产品在-55℃~+125℃全温范围内,可稳定承载的最大直流电流。若实际工作电流超过该值,磁珠可能出现磁饱和,导致阻抗下降、滤波性能失效,甚至因过热损坏。
单通道设计(1通道),适用于单路信号线路(如射频信号线)或单路电源线路的EMI抑制,无需额外并联或串联,简化电路布局。
采用0402贴片封装(公制尺寸1.0mm×0.5mm),体积小巧,适配高密度PCB设计(如智能手机主板、小型IoT模块),兼容回流焊、波峰焊等标准贴片制程,焊接可靠性高。
工作温度覆盖-55℃+125℃,满足工业级(-40℃+85℃)、汽车级(-40℃~+125℃)的温度需求,可在极端环境(如高温车载环境、低温工业现场)下稳定工作。
顺络电子作为国内被动元件龙头企业,产品一致性好,批次稳定性高;磁珠采用优质铁氧体材料,耐老化性能优异,长期使用后性能衰减极小。
综上,SZ1005K182CTF凭借小体积、宽温适配、低损耗等优势,成为高频EMI抑制场景的实用选型,可满足多领域电路的滤波需求。
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