WMSIC Electronic Components

cjiang FLCM0904-472 FLCM0904

ModelFLCM0904-472
PackageSMD-4P,9.5x5.6mm
Brandcjiang
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
cjiang FLCM0904-472
Type
CJIANG
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FLCM0904-472
Electronic Component
1
Package
SMD-4P,9.5x5.6mm
Electronic Component
Common Mode Filter
Electronic Component
0.52g
Electronic Component
1
Channel Count
2
Electronic Component
BM0264221517
Operating Temperature
40℃~+125℃
Voltage
50V
Current
200mA
Inductor@Frequency
4.7mH@100kHz
@Frequency
5kΩ@500kHz
Resistor(DCR)
700mΩ

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

FLCM0904-472 共模滤波器产品概述

FLCM0904-472是长江微电(cjiang)推出的一款表面贴装(SMD)共模滤波器,专为电子设备的电磁干扰(EMI)抑制设计,平衡了滤波性能、体积紧凑性与宽温适应性,适用于多种中低功率场景的信号/电源线路滤波需求。

一、产品核心定位

作为双路共模滤波器,FLCM0904-472的核心作用是衰减线路中的共模干扰信号,同时不影响差分信号或直流/低频信号的正常传输。其设计针对小电流、中高压应用场景,解决电子设备在工作过程中产生或受到的电磁噪声问题,满足EMC(电磁兼容)标准要求,可适配消费电子、工业控制、汽车电子等多领域设备。

二、关键参数及实际意义

该产品的核心参数明确了性能边界与适用场景,具体解析如下:

  • 通道数:2:支持双路独立滤波,可同时用于差分信号线路(如USB、通信总线)或双电源/接地线路,覆盖常见的信号/电源拓扑结构,无需额外设计多路滤波方案。
  • 共模电感:4.7mH@100kHz:在100kHz频率下的共模电感量为4.7mH,此参数决定对低频共模干扰(如电源纹波、工频谐波噪声)的抑制能力——电感量越大,低频干扰衰减效果越强,可有效降低电源线路的低频噪声。
  • 额定电流:200mA:连续工作状态下允许的最大电流为200mA,是产品安全工作的电流上限,需确保实际工作电流不超过此值,避免电感磁芯饱和导致滤波性能下降或器件损坏。
  • 共模阻抗:5kΩ@500kHz:在500kHz频率下的共模阻抗达5kΩ,反映对高频共模干扰(如开关电源的高频噪声、射频干扰)的抑制能力,阻抗越高,高频干扰衰减效果越显著,可覆盖多数电子设备的高频噪声频段。
  • 额定电压:50V:最大工作电压为50V,可应对常见的12V、24V电源系统(含±10%波动),满足多数消费电子、工业设备的电压需求,无需额外降压/升压设计。
  • 直流电阻(DCR):700mΩ:单通道直流电阻仅0.7Ω,小阻值可显著降低电流通过时的功率损耗(P=I²R),减少发热并提升信号传输效率,尤其适合对功耗敏感的小型设备(如智能穿戴)。

三、封装与物理特性

FLCM0904-472采用SMD-4P(表面贴装4引脚) 封装,尺寸为9.5mm×5.6mm,具备以下特点:

  • 小体积设计:紧凑的尺寸节省PCB布局空间,适配小型化电子设备(如智能手表、小型传感器模块)的高密度集成需求,无需占用过多板级空间。
  • 自动化兼容:表面贴装封装支持自动化焊接工艺(回流焊、波峰焊),提升生产效率,降低人工成本,适合批量生产场景。
  • 引脚可靠性:4引脚布局符合行业标准,焊接后机械强度高,抗振动、抗冲击性能优异,可适配移动设备(如车载记录仪)或工业现场等振动环境。

四、性能优势

  1. 宽频段干扰抑制:覆盖100kHz~500kHz及以上频段,兼顾低频与高频共模干扰的衰减,解决多数电子设备的EMI问题(如电源噪声、通信干扰),无需搭配多个滤波器。
  2. 低损耗高传输效率:DCR仅700mΩ,小电流下功率损耗可忽略(如200mA时损耗仅28mW),不影响信号完整性与电源效率,适合对功耗敏感的应用。
  3. 宽温适应性:工作温度范围为-40℃~+125℃,满足工业级环境(如低温户外、高温车间)与部分汽车电子场景的温度要求,长期工作稳定性可靠。
  4. 高可靠性:额定电压50V、额定电流200mA的设计,结合宽温性能,确保在长期工作中无明显性能衰减,降低设备故障风险。

五、典型应用场景

FLCM0904-472的参数与特性使其适用于以下场景:

  • 消费电子:智能家居设备(智能音箱、路由器)、智能穿戴(智能手表、手环)的电源/信号滤波,抑制电磁噪声对蓝牙/WiFi通信的干扰。
  • 工业控制:小型PLC、温度传感器模块、工业RS485通信接口的EMI抑制,避免工业现场的电磁干扰影响设备精度。
  • 汽车电子:车载小功率设备(行车记录仪、车载充电器、胎压监测模块)的电源滤波,满足车载环境的宽温(-40℃~85℃)与抗振动需求。
  • 通信设备:蓝牙模块、WiFi模块、小型基站的信号滤波,提升无线传输的稳定性与抗干扰能力,减少丢包率。

六、总结

FLCM0904-472作为长江微电的高性能共模滤波器,以紧凑的SMD封装、宽温适应性与宽频段干扰抑制能力为核心优势,针对中低功率电子设备的EMI问题提供可靠解决方案。其平衡了性能与成本,适配多种场景的信号/电源滤波需求,是小型化电子设备实现电磁兼容的理想选择。

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