WMSIC Electronic Components

SXN SMMS1050-8R2M Inductor SMMS1050

ModelSMMS1050-8R2M
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 SMMS1050-8R2M
Type
SXN
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS1050-8R2M
Electronic Component
1
Package
SMD
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
3.35g
Inductor
8.2uH
Electronic Component
1
Electronic Component
BM0265061698
Current
7A
Resistor(DCR)
35mΩ
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.

SMMS1050-8R2M 贴片功率电感产品概述

一、产品定位与核心设计逻辑

SMMS1050-8R2M是顺翔诺(SXN)推出的中大功率贴片功率电感,针对工业电源、车载电子、开关电源等场景的高电流储能/滤波需求设计。其核心设计平衡了「电感值精度」「电流承载能力」「体积紧凑性」与「铜损控制」,避免了常规功率电感在大电流下易饱和、发热高的痛点,是中功率电源模块的适配性器件。

二、核心电气参数深度解析

该电感的关键参数直接决定应用边界,具体解析如下:

  1. 电感值与精度:标称8.2μH,精度±20%
    功率电感的精度需求低于射频电感,±20%的余量可覆盖电源设计中的负载波动,满足DC-DC转换器的滤波/储能要求(如降压模块的输出滤波)。
  2. 额定电流(温升电流):7A(25℃环境下)
    指电感连续工作时,自身温升不超过40℃(行业常规标准)的最大电流,保证长期工作稳定性,避免热老化导致的参数漂移。
  3. 饱和电流(Isat):10A
    电感值下降30%时的峰值电流,是应对瞬间负载波动(如电源启动、负载突变)的关键指标。10A的饱和电流远高于额定电流,可有效防止电感失磁导致的输出电压波动。
  4. 直流电阻(DCR):35mΩ
    铜损的核心来源(功耗公式:(P=I^2R)),35mΩ在11.5×10mm封装下属于低损耗水平——以7A工作电流计算,铜损仅约1.7W,可提升电源整体效率1%-2%。

三、封装与物理特性

  1. 封装尺寸:11.5×10mm(SMD贴片)
    紧凑的贴片封装适合自动化贴装,可集成到空间紧张的电源模块(如车载中控电源、服务器小型化电源),无需额外引脚占用PCB面积。
  2. 磁芯与绕线:高饱和铁氧体磁芯+优质漆包线
    磁芯材质保证大电流下不易饱和,漆包线的绝缘性与导通性兼顾长期可靠性(耐温达155℃)。
  3. 工作温度范围:-40℃~125℃(顺翔诺标准)
    覆盖工业级与车载级宽温环境,可在极端温度下稳定工作(如北方冬季户外设备、高温车间电源)。

四、品牌与可靠性保障

顺翔诺(SXN)作为国内专注功率电感的厂商,SMMS1050-8R2M经过多项行业级可靠性测试:

  • 高温老化测试:125℃×1000小时,参数漂移率≤5%;
  • 温湿度循环测试:-40℃~85℃/95%RH,绝缘电阻≥100MΩ;
  • 振动测试:10-2000Hz/1.5G,无开路/短路故障。

五、典型应用场景

该电感适配以下中大功率场景:

  1. DC-DC转换器:车载12V转5V/3.3V电源、工业24V转12V电源的降压模块;
  2. LED驱动电源:大功率LED路灯、显示屏的恒流驱动滤波环节;
  3. 电机驱动电路:小型直流电机、步进电机的启动/运行滤波(应对启动峰值电流);
  4. 新能源辅助电源:充电桩、储能电池组的辅助DC-DC模块。

六、选型与使用注意事项

  1. 电流匹配:负载最大连续电流≤7A,峰值电流≤10A,避免电感饱和或过热;
  2. 散热设计:PCB需预留≥10mm²铜箔面积,或搭配散热片(大电流场景),降低电感表面温度;
  3. 频率适配:确认电感自谐振频率(SRF)≥1MHz(需参考厂商 datasheet),避免谐振导致电感值异常;
  4. 贴装工艺:回流焊峰值温度≤260℃(磁芯耐受温度),防止磁芯开裂;贴装后需检查引脚焊接完整性。

SMMS1050-8R2M通过参数优化与可靠性设计,可满足中功率电源场景的稳定需求,是工业、车载领域的高性价比选择。

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