WMSIC Electronic Components

BOURNS SRN6045-470M

ModelSRN6045-470M
PackageSMD,6x6mm
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BOURNS SRN6045-470M
Type
BOURNS
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
SRN6045-470M
Electronic Component
1
Package
SMD,6x6mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.95g
Inductor
47uH
Electronic Component
1
Electronic Component
BM0264533064
Current
1.1A
Resistor(DCR)
257mΩ
Electronic Component
Electronic Component
Electronic Component
1000
and Current(Isat)
1.3A

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

BOURNS SRN6045-470M功率电感产品概述

BOURNS作为全球被动元件领域的知名厂商,其SRN系列贴片功率电感以高可靠性、小体积和宽适配性为核心优势。SRN6045-470M是该系列中针对中等功率密度场景优化的产品,以下从基本信息、核心参数、封装特性、应用场景及选型注意事项展开详细概述。

一、产品基本信息

SRN6045-470M属于BOURNS SRN6045系列贴片功率电感,型号命名遵循行业通用规则:

  • SRN:系列标识(贴片功率电感专属系列);
  • 6045:封装尺寸代码(对应实际尺寸6.0mm×6.0mm×4.5mm,长×宽×高);
  • 470:电感量代码(470代表47μH);
  • M:精度标识(M对应电感量允许偏差±20%)。

该产品采用表面贴装(SMD)封装,无需额外引线,适配自动化SMT贴装生产线,可有效节省PCB布局空间,特别适合对体积敏感的电子设备设计。

二、核心电气参数详解

产品的电气参数直接决定其适用场景,以下对关键参数进行实际意义解读:

1. 电感量与精度

电感量为47μH,精度±20%(实际电感量范围为37.6μH~56.4μH)。电感量是功率电感的核心储能参数,直接影响DC-DC转换器的输出纹波和稳压稳定性。±20%的精度满足绝大多数功率电路的设计需求,无需额外高精度校准,降低了系统整体成本。

2. 电流特性

  • 额定电流(Irms):1.1A:指电感在持续工作状态下(环境温度≤85℃,典型值)允许的最大直流/交流电流。超过该电流会导致绕组直流电阻(DCR)发热加剧,若散热不足可能引发电感性能衰减或失效。
  • 饱和电流(Isat):1.3A:指电感量下降不超过30%(行业通用标准)时的最大电流。当电流超过Isat,磁芯进入饱和状态,电感量急剧下降,会导致DC-DC转换器输出纹波增大、效率降低,甚至损坏后级器件。设计时需严格控制峰值电流不超过Isat。

3. 直流电阻(DCR)

直流电阻为257mΩ(典型值),是电感绕组的固有电阻。DCR直接影响功率损耗(损耗功率P=I²×DCR),低DCR设计有助于提升电路效率,减少发热,尤其适用于对能效要求较高的便携式设备。

三、封装与物理特性

SRN6045-470M采用6.0mm×6.0mm×4.5mm(长×宽×高)的贴片封装,具有以下物理特性:

  • 贴装兼容性:符合IPC标准的焊盘设计,适配常规SMT贴装工艺,焊接温度范围(260℃/10s)满足回流焊要求;
  • 体积优势:小体积设计可在紧凑PCB布局中节省约30%的空间,适用于智能穿戴、物联网终端等小型化设备;
  • 机械可靠性:采用磁芯与绕组一体化封装,抗振动(10G~2000Hz)、抗冲击(1000m/s²)性能良好,可满足汽车电子、工业控制等对可靠性要求较高的场景。

四、典型应用场景

结合产品的电流、电感量及体积特性,SRN6045-470M适用于以下主流场景:

1. 便携式电子设备

如智能手机、平板电脑、智能手表的DC-DC降压转换器(CPU核心供电、电池充电电路),满足小体积、中等电流(≤1A)的需求,同时低DCR有助于提升电池续航。

2. 物联网(IoT)终端

传感器节点、智能家居设备(智能灯泡、温控器)的辅助电源模块,其宽温度范围(-40℃~+125℃,BOURNS典型规格)可适应室内外环境变化。

3. 汽车电子

车载小功率电源(中控屏辅助供电、胎压监测传感器供电),高可靠性设计可满足车载环境的振动、温度波动要求。

4. 工业控制

小型PLC、微型电机驱动的辅助电源,稳定的电感性能可支撑工业设备的长期连续运行。

五、选型与使用注意事项

  1. 电流匹配:设计时需核算电路的持续工作电流(≤1.1A)和峰值电流(≤1.3A),避免电感饱和或过热;
  2. 精度适配:若应用对电感量精度要求高于±20%(如射频滤波),需选择更高精度的电感型号;
  3. 散热设计:持续大电流工作时,需在PCB上预留足够的散热焊盘或铜箔,避免局部过热导致性能衰减;
  4. 焊接工艺:避免焊接温度超过260℃或时间超过10s,防止磁芯开裂或绕组损坏;
  5. 环境评估:产品可工作在-40℃~+125℃,若场景温度超出此范围,需按降额曲线调整使用电流。

综上,BOURNS SRN6045-470M是一款性能均衡、小体积的贴片功率电感,兼顾可靠性与成本优势,适用于中等功率密度的便携式设备、IoT终端及汽车电子等场景,可满足多数功率电路的设计需求。

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