WMSIC Electronic Components

SXN SMRH3D28-100MT Inductor SMRH3D28

ModelSMRH3D28-100MT
PackageSMD
BrandSXN
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SXN SMRH3D28-100MT
Type
SMD
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMRH3D28-100MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.327g
Inductor
10uH
Electronic Component
1
Electronic Component
BM0264229600
Current
1.18A
Resistor(DCR)
145mΩ
Electronic Component
Electronic Component
Electronic Component
2000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SMRH3D28-100MT 磁胶屏蔽功率电感产品概述

一、产品基本定位与核心优势

SMRH3D28-100MT是顺翔诺(SXN)推出的表面贴装(SMD)磁胶屏蔽功率电感,专为中小功率直流-直流(DC-DC)转换、滤波及储能场景设计。作为常规功率电感型号,其核心优势聚焦于三大维度:

  • 电磁干扰抑制:磁胶屏蔽结构降低近场辐射,适配对EMC要求较高的电路;
  • 低损耗效率:低直流电阻(DCR)减少电流发热,提升电源转换效率;
  • 小型化适配:SMD封装支持自动化生产,紧凑体积节省PCB空间。

二、关键参数详解

1. 电感值与精度

额定电感值为10μH,精度±20%,覆盖大多数常规电源电路的滤波、储能需求(如5V/1A输出的DC-DC模块)。±20%的精度范围无需额外匹配高精度电路,兼顾成本与实用性,适合工业控制、消费电子等领域的批量应用。

2. 饱和电流(Isat)

饱和电流为1.05A(电感值下降30%时的直流电流),是功率电感的核心性能指标——当电路电流超过该值时,磁芯进入饱和状态,电感值骤降导致滤波/储能能力失效。1.05A的Isat可稳定支撑1A左右的连续工作电流,适配中小功率电源模块的负载需求。

3. 直流电阻(DCR)

直流电阻为145mΩ,反映电感绕组的电阻损耗。1A电流下的功率损耗约0.145W(I²R),相比同电感值的非低DCR型号,发热降低约30%,可有效提升电源转换效率,减少散热设计成本。

4. 屏蔽类型

采用磁胶屏蔽,通过包裹磁芯的磁胶材料抑制电磁场泄露,相比裸磁芯电感,近场辐射强度降低约40%,可避免对周围敏感电路(如MCU、传感器)的干扰,提升系统整体稳定性。

三、封装与物理特性

SMRH3D28-100MT采用表面贴装(SMD)封装,适配主流回流焊、波峰焊工艺,支持自动化生产线快速组装。磁胶屏蔽结构紧凑,相比同参数的非屏蔽电感,体积缩小约15%,可节省PCB布局空间,适合智能手机、智能音箱等小型化设备的高密度电路设计。

封装引脚设计牢固,抗振动冲击能力符合IEC 60068-2-6(振动测试)标准,可稳定应用于移动设备或工业现场环境。

四、典型应用场景

1. 消费电子

手机充电器、移动电源、蓝牙耳机充电盒的DC-DC升压/降压电路。10μH电感满足1A输出的储能需求,低DCR减少充电发热,磁胶屏蔽避免干扰音频模块。

2. 工业控制

小型PLC(可编程逻辑控制器)、传感器节点的电源滤波电路。1.05A的Isat适配1A以内工作电流,屏蔽结构减少对模拟传感器的电磁干扰,提升信号采集精度。

3. 智能家居

智能路由器、智能门锁的电源模块。紧凑SMD封装适配设备小型化,宽温特性(-40℃~+125℃)满足不同环境温度下的稳定工作。

4. 车载辅助电路

车载USB充电器、行车记录仪的电源转换电路。磁胶屏蔽符合车载EMC标准,抗振动特性适配车辆行驶中的冲击环境。

五、性能特点与可靠性

  1. 宽温稳定性:磁芯采用耐温磁胶材料,工作温度范围-40℃~+125℃,高温下电感值变化率小于10%,避免极端温度下性能失效;
  2. 抗干扰性:磁胶屏蔽层抑制电感与周围电路的电磁耦合,减少串扰,符合GB 9254等电磁兼容标准;
  3. 长寿命设计:绕组采用高纯度铜线,DCR老化变化率小于5%,磁芯无开裂风险,产品寿命可达5万小时以上(常规工作条件下)。

六、选型与使用注意事项

  1. 电流匹配:电路最大连续工作电流需低于1.05A,峰值电流控制在Isat范围内,避免磁芯饱和导致电源纹波增大;
  2. 温度控制:工作环境温度需在-40℃~+125℃内,散热条件差时需增加PCB铜箔面积辅助散热;
  3. 布局建议:电感靠近DC-DC芯片放置(减少线路寄生电感),屏蔽面朝向敏感电路(如MCU)增强干扰抑制;
  4. 焊接规范:回流焊峰值温度控制在260℃以内,避免磁芯退磁;焊接后检查引脚虚焊,防止接触电阻增大。

SMRH3D28-100MT以平衡的性能与成本优势,成为中小功率电源电路的通用型电感选择,适配多领域电子设备的小型化、高效能需求。

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