WMSIC Electronic Components

SXN SMNR4020-1UH Inductor SMNR4020

ModelSMNR4020-1UH
PackageSMD,4x4mm
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 SMNR4020-1UH
Type
SXN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR4020-1UH
Electronic Component
1
Package
SMD,4x4mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.135g
Inductor
1uH
Electronic Component
1
Electronic Component
BM0265817979
Current
5.1A
Resistor(DCR)
38mΩ
Electronic Component
Electronic Component
Electronic Component
3000

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

SMNR4020-1UH功率电感产品概述

SMNR4020-1UH是顺翔诺(SXN)品牌推出的磁胶屏蔽贴片功率电感,针对中低功率DC-DC转换、LED驱动等场景优化设计,兼具小体积、低损耗、抗EMI等优势,适配消费电子、工业控制及便携式设备的高密度布局需求。

一、产品基本信息

该电感属于贴片式功率电感,采用SMD封装规格为4×4×2mm(长×宽×高),核心属性为磁胶屏蔽结构,品牌为顺翔诺(SXN)。其定位为商用级功率电感,覆盖从消费电子到小型工业设备的中等电流应用场景,是电源管理电路中电感选型的常规优选型号。

二、核心性能参数详解

1. 电感特性参数

  • 电感值与精度:标称电感值1μH,精度±20%,符合商用级功率电感的常规精度要求,满足大多数电源电路对电感量的稳定需求(无需高精度场景下可降低成本)。
  • 电流承载能力:
    • 额定电流(Irms):5.1A(交流有效值),指电感在25℃环境下,温升不超过40K时的最大连续工作电流,确保长期工作可靠性;
    • 饱和电流(Isat):4.78A,指电感值下降30%时的直流电流阈值,实际应用中需避免电流超过该值(否则电感性能骤降,影响电路稳定性)。
  • 直流电阻(DCR):38mΩ(典型值),属于低电阻设计——低DCR意味着电感自身损耗小、发热低,可提升电源转换效率(尤其在大电流场景下,损耗与电流平方成正比,低DCR优势更明显)。

三、封装与工艺特点

1. 小体积SMD封装

4×4×2mm的贴片封装属于微型功率电感,体积比常规插件电感小70%以上,适配智能手机、可穿戴设备、小型路由器等对空间要求苛刻的便携式/紧凑型设备,支持高密度PCB布局(可与其他贴片元件紧密排列)。

2. 磁胶屏蔽工艺

采用磁胶包裹屏蔽结构,相比非屏蔽电感:

  • 大幅降低电磁干扰(EMI):减少对周边敏感电路(如射频模块、传感器)的干扰,无需额外加EMI滤波器,简化电路设计;
  • 抗振动与抗冲击:磁胶材料的弹性缓冲作用,提升电感在振动环境(如汽车、工业设备)下的可靠性;
  • 温度稳定性:磁胶的居里温度高于常规漆包线电感,在-40℃~125℃宽温范围内电感值变化小,适配高低温场景。

四、典型应用场景

SMNR4020-1UH的参数匹配性使其广泛应用于以下场景:

  1. DC-DC降压转换器:如笔记本电脑、服务器电源的低压大电流模块(12V转5V/3.3V),低DCR与高电流承载满足效率需求;
  2. LED驱动电源:大功率LED照明(如球泡灯、面板灯)的恒流驱动电路,稳定的电感量保障输出电流精度;
  3. 便携式电子设备:智能手机、平板的电源管理单元(PMU),小体积适配设备轻薄化趋势;
  4. 工业控制电路:PLC(可编程逻辑控制器)、伺服驱动器的辅助电源,磁胶屏蔽减少设备间EMI干扰;
  5. 车载电子辅助电路:车载充电器、中控屏的电源模块(需验证宽温可靠性,该电感宽温特性适配)。

五、选型优势总结

  1. 效率优先:低DCR(38mΩ)减少功率损耗,提升电源转换效率约2%~3%(对比同规格高DCR电感);
  2. EMI简化:磁胶屏蔽降低系统EMI设计难度,节省滤波器成本与PCB空间;
  3. 空间适配:4×4×2mm微型封装,支持高密度布局,适配小型化设备;
  4. 可靠性平衡:额定电流与饱和电流的合理设计(5.1A/4.78A),兼顾长期工作可靠性与过流防护;
  5. 品牌保障:顺翔诺(SXN)作为国内电感品牌,产品符合RoHS无铅环保要求,售后与技术支持完善。

该电感的综合性能覆盖了大部分中等功率电源场景的核心需求,是工程师在电源设计中平衡效率、体积与成本的实用选型。

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