WMSIC Electronic Components

BOURNS SRF0905A-471Y

ModelSRF0905A-471Y
Package4 PC
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

20 specifications

Core information

Product name
BOURNS SRF0905A-471Y
Type
BOURNS
Unit
Electronic Component
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
SRF0905A-471Y
Electronic Component
1
Package
4 PC
Electronic Component
Common Mode Filter
Electronic Component
0.841g
Voltage
500V
Electronic Component
1
Channel Count
2
Electronic Component
BM0265677900
Operating Temperature
40℃~+105℃
Voltage
80V
Current
1.1A
Inductor@Frequency
470uH@100kHz

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

SRF0905A-471Y 共模电感产品概述

一、产品定位与核心属性

SRF0905A-471Y是BOURNS公司推出的汽车级表面贴装共模电感(CMC),专为电磁干扰(EMI)滤波设计,符合AEC-Q200车规标准,具备高可靠性、宽温适应性及低损耗特性。产品采用2通道设计,水平式4引脚SMD封装,适用于汽车电子、工业控制、通信设备等对EMI抑制和可靠性要求较高的场景。

二、关键电气性能参数解析

该产品的核心电气参数围绕“共模滤波效果”和“功率承载能力”优化,具体如下:

  1. 电感量与频率特性:标称电感值为470μH@100kHz,此参数为中低频共模噪声(如电源纹波、开关噪声)的抑制提供基础——电感量越高,对低频噪声的衰减能力越强;
  2. 功率承载能力:额定直流电流为1.1A,连续工作电流需控制在该值内,避免磁芯饱和导致电感量下降;直流电阻(DCR)仅140mΩ,大幅降低导通损耗,提升系统效率;
  3. 高频滤波能力:在20MHz频率下阻抗达1kΩ,针对高频共模噪声(如射频干扰)具备显著抑制效果,可满足电磁兼容(EMC)标准要求;
  4. 电压与绝缘特性:额定工作电压80V,满足多数低压电源线路需求;耐电压(绝缘测试)达500V,确保线路绝缘可靠性,防止击穿短路。

三、机械与可靠性特性

  1. 封装设计:采用水平式4引脚SMD封装,体积紧凑(适配自动化贴装),便于PCB布局优化,节省空间;
  2. 宽温适应性:工作温度范围为**-40℃~+105℃**,覆盖汽车、工业环境的极端温度场景(如车载低温启动、工业高温作业);
  3. 车规可靠性:通过AEC-Q200认证,符合汽车电子的振动、温度循环、湿度等严苛测试要求,可稳定应用于车载系统。

四、设计优势与典型应用场景

(1)核心设计优势

  • 低损耗高功率密度:低DCR减少能量损耗,1.1A额定电流适配中等功率线路,平衡滤波效果与效率;
  • 宽频EMI抑制:中低频(100kHz)高电感量+高频(20MHz)高阻抗,覆盖从电源纹波到射频干扰的全频段噪声;
  • 高可靠性适配:AEC-Q200+宽温设计,满足车规及工业级可靠性要求,降低售后维护成本。

(2)典型应用场景

  • 汽车电子:车载信息娱乐系统、ADAS电源滤波、车身控制单元(BCM)的EMI抑制;
  • 工业控制:PLC、伺服驱动器、变频器的电源线路滤波,避免噪声干扰控制信号;
  • 通信设备:路由器、交换机、基站电源模块的EMC合规设计。

五、选型与应用注意事项

  1. 电流限制:实际工作电流(含直流+纹波)需≤1.1A,若超过需降额使用或选择更高额定电流型号;
  2. 电压匹配:工作电压不超过80V,耐电压500V为绝缘测试值,不可作为工作电压上限;
  3. 频率适配:470μH电感主要针对100kHz左右噪声,高频需依赖20MHz阻抗特性,需结合系统噪声频率选择;
  4. 贴装可靠性:水平式封装需注意PCB焊盘尺寸与间距设计,确保焊接牢固,避免虚焊;
  5. 散热考虑:工作温度上限105℃,需避免电感附近热源集中,必要时增加散热设计。

SRF0905A-471Y凭借车规可靠性、宽频滤波能力及低损耗特性,成为汽车电子、工业控制等领域EMI抑制的优选组件,可有效提升系统电磁兼容性与稳定性。

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