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SM4532-2R2MT是顺翔诺(SXN)品牌推出的非屏蔽贴片功率电感,主要面向中低功率电子设备的电源转换、滤波及储能场景设计。型号命名规则清晰:
该产品定位为常规功率电感,兼顾小型化与成本优势,适合对电磁干扰(EMI)要求不苛刻的电路设计。
SM4532-2R2MT的参数针对中低功率需求优化,关键指标及实际意义如下:
电感标称值为2.2μH,精度±20%——该范围可满足多数DC-DC转换器、LED驱动等电路的电感量需求,无需额外高精度校准,降低系统设计复杂度。
直流电阻为71.2mΩ,反映绕组的直流损耗。较低的DCR可减少电流通过时的热损耗,提升电源转换效率,尤其适合对能效有要求的小型设备。
采用SMD贴片封装,尺寸为4.5mm×4.0mm×1.6mm(典型厚度,需参考 datasheet),体积紧凑,可有效节省PCB布局空间,适配手机、平板、路由器等小型化设备的高密度设计。
该产品为非屏蔽电感,磁芯无额外屏蔽层。优势在于成本更低、电感量一致性较好;但电磁辐射略高于屏蔽电感——若电路对EMI(如射频模块)要求严格,需配合屏蔽罩或合理布局降低干扰。
符合常规贴片工艺要求,可通过自动化贴片机批量生产,贴装效率高,适合大规模制造。
SM4532-2R2MT的参数特性使其适配以下场景:
如手机/平板的电池供电转换电路(5V转3.3V/1.8V)、路由器/机顶盒的电源模块(12V转5V)等。额定电流1.75A可满足多数移动设备及小型家电的电源需求,2.2μH电感适配常见开关频率(几百kHz至几MHz)。
小功率LED照明(如台灯、屏幕背光)的恒流驱动电路中,电感用于储能及滤波,该产品的尺寸与电流参数可适配1-3W LED的驱动模块。
如音频设备的电源滤波、USB接口的EMI滤波(配合电容),非屏蔽电感的成本优势可降低系统总成本。
SM4532-2R2MT是一款高性价比的非屏蔽贴片功率电感,以2.2μH电感值、1.75A额定电流为核心,适配中低功率电源转换、LED驱动等场景。其紧凑封装与可控成本,使其成为移动设备、小型家电的理想选择。设计时需注意非屏蔽特性带来的EMI问题,合理布局可充分发挥性能优势。
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