WMSIC Electronic Components

BOURNS SRN5040-100M

ModelSRN5040-100M
PackageSMD,5x5mm
BrandBOURNS
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
BOURNS SRN5040-100M
Type
BOURNS
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
SRN5040-100M
Electronic Component
1
Package
SMD,5x5mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.633g
Inductor
10uH
Electronic Component
1
Electronic Component
BM0265677878
Current
2.1A
Resistor(DCR)
68mΩ
Electronic Component
Electronic Component
Electronic Component
1000
and Current(Isat)
2.3A

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

SRN5040-100M 功率电感产品概述

一、产品定位与品牌背景

SRN5040-100M是BOURNS(伯恩斯) 推出的表面贴装(SMD)功率电感,定位于中小功率电源电路的核心电感元件,以紧凑封装、稳定电流性能为核心特点,适配高密度PCB布局场景。BOURNS作为全球被动元件及电路保护领域的知名厂商,其电感产品以磁芯材料稳定性、电流可靠性著称,SRN5040系列针对便携式电子、消费类电源等领域优化设计,兼顾性能与成本。

二、关键电气参数详解

SRN5040-100M的核心参数直接决定其应用边界,具体如下:

1. 电感值与精度

  • 额定电感值:10μH,覆盖中小功率DC-DC转换电路的主流需求(如降压电路中10μH量级电感);
  • 精度范围:±20%,工程设计中留有合理余量,适配不同批次元件的参数波动,避免过高精度带来的成本冗余。

2. 电流性能指标

  • 额定电流(Irms):2.1A:指25℃环境下连续工作时,DCR温升不超过额定值(20~40℃)的最大电流,是长期可靠工作的核心参考;
  • 饱和电流(Isat):2.3A:磁芯开始饱和、电感值下降至额定值70%时的电流,是瞬间负载波动(启动、负载突变)的防护关键——饱和电流比额定电流高约9.5%,为峰值电流预留充足余量,避免电感储能骤降导致电路异常。

3. 直流电阻(DCR)

  • 额定DCR:68mΩ,属于同封装功率电感的低损耗水平;
  • 意义:低DCR降低导通损耗(P=I²×R),可提升DC-DC电路效率1~2%,同时减少自身发热,降低系统散热压力。

三、机械与封装特性

SRN5040-100M采用SMD封装,机械特性适配自动化生产与高密度布局:

1. 封装尺寸

  • 长×宽×高:5.0mm×5.0mm×4.0mm(命名中“5040”对应核心尺寸),体积紧凑,适配便携式设备的狭小空间;

2. 环境与焊接兼容性

  • 工作温度范围:-40℃~125℃,覆盖工业级环境(如户外设备、汽车电子局部高温区);
  • 合规性:符合RoHS无铅无卤标准,支持回流焊(峰值≤260℃)、波峰焊等自动化贴装工艺;

3. 可靠性设计

  • 引脚采用抗弯折设计,减少贴装过程中的变形风险;
  • 磁芯材料稳定,抗振动、抗冲击性能满足工业级要求。

四、典型应用场景

结合性能特点,SRN5040-100M的核心应用场景包括:

  1. 便携式电子设备:智能手机、平板、智能穿戴的DC-DC降压/升压电路,紧凑体积适配小空间,低损耗提升电池续航;
  2. 消费类电源:机顶盒、路由器、智能电视的电源模块,满足1~3A输出需求,饱和电流适配启动时的峰值负载;
  3. 工业控制节点:小型PLC、传感器终端、物联网设备的电源电路,宽温范围适应工业环境温度变化;
  4. 通信设备:小型基站、无线AP的电源子系统,高密度封装适配多电感布局需求。

五、选型优势与注意事项

1. 选型核心优势

  • 高电流密度:5×5mm封装实现2.1A额定电流,空间利用率比传统电感提升约30%;
  • 高效低耗:68mΩ DCR减少功率损耗,降低散热成本;
  • 可靠防护:饱和电流余量充足,抗负载波动能力强;
  • 全球合规:符合RoHS、REACH标准,适配国际市场要求。

2. 设计注意事项

  • 电流裕量:实际负载需预留10%~20%电流裕量,避免超过饱和电流;
  • 散热设计:高负载(接近2.1A)时需在PCB预留散热焊盘/铜箔,降低温升;
  • 焊接工艺:严格遵循BOURNS推荐的回流焊曲线,避免峰值温度过高损坏磁芯。

SRN5040-100M凭借平衡的性能与成本优势,成为中小功率电源电路的高性价比电感选型,适用于多领域的量产需求。

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