WMSIC Electronic Components

SXN SMMS1050-4R7M Inductor SMMS1050

ModelSMMS1050-4R7M
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 SMMS1050-4R7M
Type
SXN
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS1050-4R7M
Electronic Component
1
Package
SMD
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
3.072g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0265793564
Current
9.5A
Resistor(DCR)
18mΩ
Electronic Component
Electronic Component
Electronic Component
500

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

SMMS1050-4R7M 功率电感产品概述

一、产品基本信息

SMMS1050-4R7M是顺翔诺(SXN)品牌推出的贴片式功率电感,专为中大功率电源系统打造。产品采用表面贴装(SMD)封装,尺寸紧凑(11.5×10mm),兼顾高电流承载能力与低损耗特性,适配各类DC-DC转换、电源模块等场景,是工业、服务器、车载等领域的可靠电感选型。

二、核心电气性能参数

该电感的参数设计聚焦电感稳定性、电流冗余、损耗控制三大核心,关键指标如下:

2.1 电感值与精度

标称电感值4.7μH,精度±20%,满足大多数电源电路的工程级电感量需求,无需额外匹配高精度元件,降低系统成本。

2.2 电流承载能力

  • 额定电流(Irms):9.5A(持续工作电流,此时电感升温不超过允许范围,保证长期稳定运行);
  • 饱和电流(Isat):14A(电感值下降30%时的临界电流,设计时需预留20%~30%余量,避免负载突变导致性能突变)。

2.3 直流电阻(DCR)

18mΩ(极低内阻),显著降低铜损——在9.5A持续电流下,损耗仅约1.62W((I^2R=9.5^2×0.018≈1.62W)),可提升电源整体效率1%~2%。

2.4 温度特性

典型工作温度范围-40℃~125℃(工业级宽温设计),适配极端环境下的稳定运行,降低系统故障率。

三、机械与封装特性

SMMS1050-4R7M采用封闭磁芯贴片结构,机械参数适配自动化生产:

  • 外形尺寸:11.5mm(长)×10mm(宽)×5mm(高,行业常规功率电感高度);
  • 引脚设计:符合IPC标准的贴片引脚,适配回流焊工艺(焊接温度≤260℃,时间≤3秒);
  • 结构优势:磁芯采用铁氧体/合金复合材质,兼顾饱和特性与抗EMI能力;线圈为高导电率铜线绕制,进一步降低内阻。

四、典型应用场景

基于高电流冗余与低损耗特性,该电感主要应用于:

  1. 服务器/数据中心电源:12V转5V/3.3V的DC-DC降压模块,满足高负载密度需求;
  2. 工业电源系统:变频器、PLC电源模块,适配-40℃~125℃的工业环境;
  3. 车载电子设备:车载充电器、中控电源,耐受汽车级温度与振动;
  4. 通信基站电源:5G基站功率转换单元,稳定承载中大功率负载;
  5. 高端消费电子:高性能笔记本、游戏主机电源模块,提升续航与效率。

五、产品优势与价值

  1. 高电流冗余:饱和电流14A远超额定电流,应对开机冲击、突发负载等场景时性能稳定,避免电感饱和故障;
  2. 低损耗高效:18mΩ DCR将铜损降至最低,减少电源散热压力,提升系统能效;
  3. 小尺寸大功率:11.5×10mm紧凑尺寸,节省PCB空间,适配高密度电源模块设计;
  4. 宽温可靠:工业级宽温范围,在极端环境下仍保持性能稳定,降低维护成本;
  5. 易加工适配:贴片封装适配自动化贴装线,焊接工艺成熟,降低生产难度。

六、选型与使用注意事项

  1. 电流余量:持续电流需≤9.5A,峰值电流需≤14A(建议留20%~30%余量);
  2. 焊接工艺:回流焊温度≤260℃,时间≤3秒,避免高温损坏磁芯;
  3. 机械应力:安装时避免挤压,防止引脚断裂或磁芯开裂;
  4. 散热设计:高电流工作时需添加散热铜箔,避免电感升温过高;
  5. 温度影响:磁芯温度系数约±10%/℃,极端温度下需注意电感值变化对电路的影响。

七、总结

SMMS1050-4R7M作为中大功率贴片功率电感,凭借高饱和电流、低DCR、小尺寸与宽温特性,成为电源系统设计的可靠选择。其覆盖工业、服务器、车载等多领域,可有效提升电源效率与系统稳定性,降低设计与生产难度,是同类产品中的高性价比选型。

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