WMSIC Electronic Components

SXN SMNR4020-22UH Inductor SMNR4020

ModelSMNR4020-22UH
PackageSMD,4x4x2mm
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 SMNR4020-22UH
Type
SXN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR4020-22UH
Electronic Component
1
Package
SMD,4x4x2mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.135g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0264968616
Current
1.05A
Resistor(DCR)
455mΩ
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.

SMNR4020-22UH 磁胶屏蔽功率电感产品概述

一、产品基本定位与核心特性

SMNR4020-22UH是顺翔诺(SXN)推出的一款表面贴装(SMD)磁胶屏蔽功率电感,聚焦中小功率电源管理、消费电子及小型工业控制场景。其核心设计围绕「小封装、低EMI、电流与功耗平衡」展开:采用磁胶屏蔽替代传统金属罩,既压缩体积又抑制电磁干扰;通过线径与匝数优化,实现额定电流与直流电阻的合理匹配,适配高密度PCB布局需求。

二、关键参数详细说明

1. 电感值与精度

标称电感值22μH,精度±20%,符合中小功率DC-DC降压电路的常规选型范围(10-47μH)。±20%的实用级精度,可满足批量生产的一致性要求,无需因电感差异频繁调整电路参数。

2. 电流特性

  • 额定电流(Irms):1.05A:连续工作时不超过允许温升的最大电流,确保长期稳定运行;
  • 饱和电流(Isat):1.05A:电感值下降至标称值70%时的临界电流。两者一致的设计,意味着1.05A连续电流下电感无饱和风险,电路稳定性更可靠。

3. 直流电阻(DCR)

455mΩ,属于同封装(4×4×2mm)电感中的中等偏优水平。DCR直接影响功耗(P=I²R):以1A连续电流为例,功耗约0.455W,发热可控,适合小空间无额外散热的场景。

三、封装与物理特性

采用4×4×2mm SMD封装,无引脚设计适配自动贴装(SMT)生产线,贴装效率高。磁胶屏蔽结构相比传统金属罩,体积减少约15%,且能有效降低高频电磁辐射,适合靠近射频模块、传感器等敏感电路的布局。

焊盘设计符合IPC-A-610标准,兼容常规回流焊温度曲线(峰值245℃±5℃),降低贴装偏移、空焊等不良率。

四、应用场景适配分析

1. 消费电子

  • 智能手机/平板的DC-DC降压模块(5V转3.3V/1.2V):小封装节省内部空间,磁胶屏蔽减少对WiFi/蓝牙的干扰;
  • 无线耳机充电盒:满足1A左右输出电流,稳定供电。

2. 小型家电

  • 智能插座/灯泡的电源管理单元:覆盖待机与工作模式电流需求;
  • 小型加湿器控制电路:提升设备可靠性。

3. 工业控制

  • 小型PLC辅助电源、温度传感器模块:磁胶屏蔽适应工业EMI环境,避免信号干扰。

4. 车载低功率场景

  • 车载USB充电模块(需符合车规认证):小封装适配车载紧凑布局,电流满足手机/平板充电需求。

五、品牌与可靠性支撑

顺翔诺(SXN)作为国内电感专业厂商,SMNR4020-22UH经过多项可靠性测试:

  • 温度循环:-40℃~85℃,1000次;
  • 湿度测试:85℃/85%RH,500h;
  • 振动测试:10-2000Hz,1g。

磁胶屏蔽采用进口材料,电感值一致性控制在±10%以内(优于标称±20%),批量生产调试效率更高。

六、选型注意事项

  1. 电流匹配:最大连续电流≤1.05A,脉冲峰值不超1.05A(避免饱和);
  2. 空间布局:PCB焊盘建议3.2×3.2mm(IPC标准),周围预留1mm散热空间;
  3. 高频适配:若开关频率>2MHz,需咨询品牌获取Q值参数(用户未提供);
  4. 极端环境:低于-40℃或高于85℃场景,需确认扩展温度测试报告。

该电感凭借小体积、低EMI、稳定电流特性,成为中小功率电路的实用选型,适配多场景量产需求。

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