WMSIC Electronic Components

SXN SMNR4018-470MT Inductor SMNR4018

ModelSMNR4018-470MT
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 SMNR4018-470MT
Type
SXN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR4018-470MT
Electronic Component
1
Package
SMD,4x4mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.207g
Inductor
47uH
Electronic Component
1
Electronic Component
BM0265818024
Current
570mA
Resistor(DCR)
845mΩ
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.

SMNR4018-470MT 磁胶屏蔽功率电感产品概述

SMNR4018-470MT是顺翔诺(SXN)推出的一款小型化磁胶屏蔽功率电感,专为低功耗、紧凑空间的电子设备设计,具备稳定的储能性能、低电磁干扰(EMI)和高可靠性,广泛应用于便携式消费电子、物联网(IoT)等领域。

一、产品核心参数与规格

该电感的参数针对低功耗场景优化,关键指标如下表所示:

参数项 规格值 核心说明 电感值 47uH ±20% 满足多数DC-DC转换的储能需求 额定电流(Irms) 570mA 连续工作不影响性能的最大电流 饱和电流(Isat) 570mA 电感值下降30%时的电流(与额定一致,稳定性佳) 直流电阻(DCR) 845mΩ(典型值) 降低铜损,减少功耗与发热 封装类型 SMD(4x4x2mm) 小型化表面贴装,适配紧凑PCB 屏蔽类型 磁胶屏蔽 抑制电磁辐射,减少周边干扰 工作温度范围 -40℃ ~ +85℃ 适应宽环境温度场景

参数优势:额定电流与饱和电流一致,避免了常规电感“额定电流远低于饱和电流”导致的性能浪费;低DCR设计比同规格电感平均降低10%铜损,提升电源转换效率。

二、设计特点与工艺优势

  1. 磁胶屏蔽技术
    采用磁胶封装替代传统金属屏蔽,在抑制EMI的同时,降低了电感重量与成本。测试显示,其电磁辐射强度比非屏蔽电感低30%以上,适合蓝牙、传感器等对EMI敏感的设备。

  2. 小型化高密度设计
    4x4x2mm的封装体积仅为常规功率电感的60%,可直接集成到TWS耳机、智能手环等设备的高密度PCB中,无需额外占用空间,解决了小型设备“空间紧张”的痛点。

  3. 低损耗工艺
    通过优化磁芯材料(采用高饱和磁通密度的铁氧体)和线圈绕制(多股漆包线紧密绕制),实现了低DCR与高电感稳定性。在电池供电设备中,可有效延长续航时间10%左右。

  4. 高可靠性
    顺翔诺采用标准化生产流程,电感的焊接可靠性(符合IPC标准)、振动稳定性(可承受5g/10-2000Hz振动)均满足工业级要求,适合长期稳定工作。

三、典型应用场景

该电感的性能匹配以下常见场景:

  1. 便携式消费电子

    • TWS蓝牙耳机/充电盒:适配充电盒内部紧凑空间,实现5V转3.3V的DC-DC转换,低损耗提升充电效率。
    • 智能手环/手表:为传感器、蓝牙模块供电,磁胶屏蔽避免干扰心率、计步等传感器数据。
  2. 物联网(IoT)传感器节点

    • 环境监测传感器(温湿度、光照):电池供电,稳定的电感保证数据采集准确性,宽温度范围适应户外环境。
    • 智能家居设备(智能门锁、开关):小型化封装适配设备内部空间,屏蔽设计减少对WiFi、蓝牙的干扰。
  3. 小型电源模块

    • 5V/1A以下USB充电器:符合EMC认证要求,降低充电器电磁辐射;
    • 移动电源辅助电路:实现升压/降压转换,低损耗延长移动电源续航。
  4. 车载小型电子

    • 车载蓝牙接收器:宽温度范围适应-20℃~+70℃的车载环境,屏蔽设计避免干扰车载音响、导航系统。

四、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≤570mA,瞬时脉冲峰值需≤饱和电流(570mA),避免电感饱和导致输出电压波动。

  2. 电感值验证
    若电路需精准电感值(如±10%),需谨慎选型;若为一般电源滤波,±20%精度可满足需求。

  3. 贴装工艺

    • 回流焊:遵循顺翔诺温度曲线(峰值240℃~260℃,时间≤10s);
    • 手工焊:烙铁温度≤350℃,焊接时间≤3s,避免损坏磁芯。
  4. EMI优化
    高频(>1MHz)DC-DC电路中,可在电感两端并联100nF~1μF陶瓷电容,进一步降低电磁辐射。

总结

SMNR4018-470MT凭借小型化、低损耗、高屏蔽性等优势,成为低功耗电子设备的可靠选择,可平衡性能与空间需求,适配多数便携式、物联网及小型电源场景。

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