WMSIC Electronic Components

SXN SMMS1040-470M Inductor SMMS1040

ModelSMMS1040-470M
PackageSMD,11.5x10x4mm
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 SMMS1040-470M
Type
SXN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS1040-470M
Electronic Component
1
Package
SMD,11.5x10x4mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
2.721g
Inductor
47uH
Electronic Component
1
Electronic Component
BM0264968612
Current
3A
Resistor(DCR)
155mΩ
Electronic Component
Electronic Component
Electronic Component
1000

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

SMMS1040-470M功率电感产品概述

SMMS1040-470M是顺翔诺(SXN)推出的一款贴片式功率电感,专为中功率电子电路的储能、滤波及EMI抑制需求设计,采用紧凑SMD封装,兼顾电流能力与体积优势,适用于多种消费电子、车载及工业应用场景。

一、产品基本信息与品牌背景

顺翔诺(SXN)作为国内专业电感制造厂商,其SMMS系列以高可靠性、宽电流范围及紧凑体积为核心特点。SMMS1040-470M属于该系列中功率型号,型号中“1040”对应封装尺寸(11.5×10×4mm),“470M”表示电感值47μH(“M”代表±20%精度),整体定位为中功率电路的核心电感元件。

二、核心电气参数详解

该电感的电气性能是应用设计的关键依据,各参数含义及意义如下:

2.1 电感值与精度

电感值为47μH±20%,实际范围在37.6μH~56.4μH之间。此范围满足大多数中功率DC-DC转换器、LED驱动电源的滤波及储能需求,精度设计兼顾成本与电路适配性,避免过高精度导致不必要的成本增加。

2.2 电流能力参数

  • 额定电流(Irms):3A:指电感在额定工作温度(通常25℃)下连续工作的最大允许直流电流,此时电感量无明显下降,性能稳定。
  • 饱和电流(Isat):4.5A:指磁芯饱和时的电流(电感量降至初始值80%),设计需确保峰值电流不超过此值,否则会导致储能下降、纹波增大。

2.3 直流电阻(DCR)

直流电阻为155mΩ,是绕组固有电阻,直接影响功耗(功耗=I²×DCR)。在3A额定电流下,功耗约1.4W,设计需预留PCB散热面积,避免温度过高降低寿命。

三、封装与物理特性

SMMS1040-470M采用SMD贴片封装,物理尺寸为11.5mm(长)×10mm(宽)×4mm(高),具有以下特点:

  1. 贴装兼容性:符合标准SMD工艺,可自动化批量生产,效率高;
  2. 体积紧凑:贴装面积仅115mm²,高度4mm,适配笔记本、车载等紧凑空间;
  3. 可靠性:贴片结构减少焊接点,降低接触电阻与故障风险,利于热量传导。

四、典型应用场景

结合性能特点,该电感典型应用包括:

4.1 开关电源(DC-DC转换器)

笔记本电脑、显示器、路由器等设备的降压/升压模块,3A额定电流满足中功率输出,47μH电感抑制纹波,提升电源效率。

4.2 车载电子系统

车载充电器、显示屏、行车记录仪的电源电路,紧凑体积适配车载空间,4.5A饱和电流应对启动、负载突变的峰值冲击。

4.3 LED驱动电源

中功率LED照明(面板灯、汽车辅助灯)的驱动电路,47μH电感稳定电流,提升光效与寿命。

4.4 工业控制模块

小型PLC、传感器节点的辅助电路,宽电流范围适配工业复杂工况,可靠性强。

五、产品优势与设计注意事项

5.1 核心优势

  1. 电流能力匹配:3A额定+4.5A饱和,覆盖持续与峰值需求,无需并联电感;
  2. 成本平衡:±20%精度兼顾性能与成本,适合量产;
  3. 品牌可靠:顺翔诺工艺成熟,产品一致性好,符合RoHS环保标准。

5.2 设计注意事项

  1. 电流限制:持续电流≤3A,峰值≤4.5A,避免磁芯饱和;
  2. 散热设计:电感下方PCB预留铜箔散热,避免温度超125℃(磁芯耐温上限);
  3. 精度适配:电路需考虑电感量波动,避免影响输出电压、纹波;
  4. 贴装工艺:回流焊峰值温度≤260℃,时间≤10秒,避免损坏绕组/磁芯。

SMMS1040-470M以平衡的性能、紧凑体积及可靠设计,成为中功率电子设备电源电路的优选元件,可有效提升电路效率与稳定性。

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