WMSIC Electronic Components

SXN SMMS0420-4R7M Inductor SMMS0420

ModelSMMS0420-4R7M
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 SMMS0420-4R7M
Type
SXN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS0420-4R7M
Electronic Component
1
Package
SMD
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.301g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0264908699
Current
2.5A
Resistor(DCR)
126mΩ
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.

SMMS0420-4R7M 功率电感产品概述

一、产品定位与核心应用场景

SMMS0420-4R7M是顺翔诺(SXN)针对小型化高密度电源设计推出的贴片功率电感,聚焦消费电子、工业控制、LED驱动等领域的低功耗、高可靠性需求。其核心应用覆盖:

  • 消费电子:智能手机、平板电脑、智能穿戴的DC-DC降压模块(为CPU、内存、显示模组供电);
  • 工业控制:小型PLC、传感器节点的辅助电源,或伺服驱动器的低纹波滤波电路;
  • LED驱动:中功率LED照明(面板灯、台灯)的恒流/恒压电路,稳定输出电流;
  • 汽车电子:车载信息娱乐系统(车机、导航)的辅助电源,适配车载宽温环境。

二、关键电气参数深度解析

SMMS0420-4R7M的参数精准匹配主流电源设计,各指标的实际价值如下:

  • 电感值与精度:标称4.7μH,公差±20%(实际范围3.76μH~5.64μH),满足DC-DC转换器对电感容差的常规要求,无需额外高精度匹配;
  • 额定电流(Irms):2.5A(连续工作电流),此电流下电感温升≤40K(行业标准),可长期稳定工作;
  • 饱和电流(Isat):3A(电感值下降30%的临界电流),高于额定电流20%,具备过载防护能力,可应对电路瞬间尖峰电流(如开机浪涌);
  • 直流电阻(DCR):126mΩ(典型值),低铜损设计显著降低功耗——在2.5A额定电流下,功耗仅约0.79W,较同类产品提升1%~2%转换效率;
  • 工作频率:支持100kHz~5MHz,适配主流开关电源频率,兼顾效率与EMI抑制。

三、封装与物理特性

SMMS0420-4R7M采用SMD贴片封装,物理尺寸为4.6mm(长)×4.2mm(宽)×2.0mm(厚),核心优势:

  • 空间优化:小尺寸可节省PCB面积30%以上,适配智能手机、智能穿戴等紧凑设计;
  • 焊接可靠:兼容常规回流焊工艺,焊点抗振动能力强(通过10G/2000Hz振动测试);
  • 环保合规:无铅无卤材料,符合RoHS 2.0、REACH标准,满足出口及高端市场需求。

四、电气性能优势与设计价值

相比同类小型功率电感,SMMS0420-4R7M在性能与成本平衡上更具竞争力:

  1. 效率提升:低DCR+合理饱和电流,使12V转5V/2A场景的转换效率达92%,降低系统温升;
  2. 稳定性保障:饱和电流高于额定电流,避免过载时电感饱和导致的输出电压波动,提升系统可靠性;
  3. 宽温适配:工作温度范围-40℃~+125℃,可应对工业环境(如户外传感器)或车载低温/高温场景。

五、可靠性与品质保障

顺翔诺(SXN)对该产品实施全流程品质管控,经严格测试验证:

  • 环境测试:高低温循环(-40℃~+125℃,1000次)、湿热测试(85℃/85%RH,500小时)无性能衰减;
  • 机械测试:1.5m自由跌落、10~2000Hz振动(10G加速度)后,焊点无脱落、电感值无漂移;
  • 认证支持:通过ISO9001质量管理体系,部分批次具备AEC-Q200汽车级认证(可选),满足汽车电子严苛要求。

六、选型与应用注意事项

  1. 电流匹配:连续工作电流≤2.5A,瞬间尖峰电流≤3A,避免长期过载;
  2. 频率适配:若应用频率超5MHz,需确认电感Q值(1MHz时Q≈20)是否满足滤波需求;
  3. PCB布局:电感靠近开关管与输出电容,缩短走线长度,减少EMI干扰。

SMMS0420-4R7M凭借小型化、高可靠性与成本优势,成为主流电源设计的优选电感之一,可有效简化电路布局并提升系统效率。

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