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YI453215U121-8R0T是益嘉源(YJYCOIN) 推出的一款1812封装(对应公制4532尺寸)高性能单通道磁珠,专为大电流场景下的电磁干扰(EMI)抑制设计,兼具低损耗、宽温适应性等特点,可广泛应用于电源滤波、高速数字电路等领域。
该磁珠属于磁性滤波元件,核心作用是在传输直流/低频电流的同时,滤除高频干扰噪声。产品采用1812英寸封装(公制尺寸约4.5mm×3.2mm×1.5mm),体积紧凑,便于高密度PCB布局;单通道设计满足单路电源或信号线路的滤波需求,适配多种电路拓扑结构。
产品在100MHz频率下阻抗为120Ω,误差范围±25%,此参数针对常见开关电源、高速数字电路产生的高频干扰频段优化,可有效抑制该频段内的电磁噪声,帮助电路通过EMC认证。
直流电阻低至10mΩ,是大电流应用的关键优势——低DCR可大幅减少磁珠自身的功耗和发热,提升电流传输效率,避免因发热导致的性能衰减或可靠性问题。
连续工作额定电流为8A,可满足中小功率设备(如车载电子、工业电源)的电流需求,过载能力符合行业标准,能应对短时间脉冲电流冲击。
支持**-55℃至+125℃** 的宽温工作,适应极端环境(如低温高原、高温工业车间),可靠性不受温度变化显著影响,符合工业级、汽车级应用的温度要求。
结合10mΩ低DCR与8A额定电流,在大电流传输场景下,磁珠自身功耗仅为(I^2R = 8^2×10×10^{-3} = 0.64W),发热可控,无需额外散热设计,降低系统成本。
120Ω@100MHz的阻抗特性精准匹配常见EMI干扰频段(如开关电源的高频纹波、高速数字信号的电磁辐射),滤波效果明确,避免盲目选型导致的干扰抑制不足。
-55℃~+125℃的工作范围经过严苛测试验证,高低温循环后性能衰减率低于5%,满足汽车电子(如车载中控、动力系统)、工业控制(如PLC、变频器)等对环境适应性要求高的场景。
1812封装符合行业标准,兼容常规PCB焊接工艺(回流焊、波峰焊),可与其他1812封装元件并行布局,节省PCB空间,适配小型化设备设计趋势。
益嘉源(YJYCOIN)是国内专注于磁性元件研发生产的高新技术企业,产品覆盖磁珠、功率电感、变压器等,广泛应用于通信、汽车、工业、消费电子等领域。YI453215U121-8R0T磁珠经过IEC 61000-4-2(ESD)、IEC 60068-2(环境测试) 等国际标准测试,可靠性符合工业级要求;同时符合RoHS 2.0、REACH等环保指令,无铅无卤,绿色环保。
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