WMSIC Electronic Components

cjiang FNR5040S102MT

ModelFNR5040S102MT
PackageSMD,5x5mm
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 FNR5040S102MT
Type
CJIANG
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR5040S102MT
Electronic Component
1
Package
SMD,5x5mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.579g
Inductor
1mH
Electronic Component
1
Electronic Component
BM0232021849
Current
230mA
Resistor(DCR)
7.8Ω
Electronic Component
Electronic Component
Electronic Component
1500

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

FNR5040S102MT 产品概述

一、产品简介

FNR5040S102MT 是长江微电(cjiang/长江微电)推出的一款磁胶屏蔽功率电感,封装形式为SMD,外形尺寸5×5 mm。标称电感值为1 mH,容差±20%,主要面向需要较大阻抗、低电流的滤波与抑制干扰场合。该器件采用磁性胶合与屏蔽结构,利于减少外泄磁场干扰并提高布局兼容性。

二、主要参数(典型)

  • 电感值:1 mH ±20%
  • 额定电流:230 mA(Ir)
  • 饱和电流(Isat):250 mA(定义为电感下降到指定值时的电流)
  • 直流电阻(DCR):7.8 Ω
  • 类型:磁胶屏蔽电感(磁性胶合)
  • 封装:SMD,5×5 mm
  • 品牌:cjiang(长江微电)
  • 典型用途:低频滤波、EMI抑制、信号链滤波、便携式设备供电滤波

三、特性与设计要点

  1. 高阻抗、低电流:1 mH 的大电感与较高 DCR(7.8Ω)使该件在低频段和窄带抑制中表现良好,但不适合高电流功率传输场合。
  2. 发热与功耗:按 P = I^2·R 计算,在额定电流0.23 A 时,损耗约为0.23^2×7.8 ≈ 0.41 W,电压降约1.79 V,需在电路设计中考虑热量与电压损耗;建议对电流做适当降额(例如最大工作电流低于额定值)以减小温升。
  3. 饱和限制:Isat 仅250 mA,接近额定值,短时或瞬态电流应避免超过该范围以免电感量急剧下降影响滤波性能。
  4. 屏蔽与封装:磁胶屏蔽结构利于降低对周边元件的磁耦合,5×5 mm SMD 便于自动贴片装配。

四、典型应用场景

  • 传感器接口与模拟前端的电源滤波与去耦
  • 音频设备电源与信号线的低频噪声抑制
  • 低功率便携设备(如手持终端、测量仪表)中的输入滤波
  • EMI/RFI 抑制电路中的串联电感元件

五、布局与焊接建议

  • 建议采用对称焊盘,保证良好热传导与机械固定;尽量减小引脚与地/电源平面的阻抗。
  • 波峰/回流焊时遵循元器件通用温度曲线,避免长时间高温以保护磁胶材料;建议参考厂方资料确认具体回流曲线。
  • 布局时与易受磁场影响的敏感元件保持合理间距,如有必要添加屏蔽或隔离。

六、选型注意事项与建议

  • 若电路工作电流接近或超过200 mA,应慎重评估功耗与温升,或考虑低DCR、高Isat 的电感替代品。
  • 需严格控制电流峰值与脉冲,以免进入饱和区影响滤波效果。
  • 对于需认证(如汽车、医用)或特殊环境(高温、高湿)的应用,请向长江微电索取完整数据手册与可靠性/认证资料。

七、结语

FNR5040S102MT 适合对电流要求不高、但需要较大电感值与屏蔽效果的低频滤波与抑扰场合。设计时以热管理、饱和裕量与电压降为重点,必要时联系厂商获取详细电气曲线与样品评估,以确保在目标应用中达到预期性能。若需进一步的电路示例或替代件建议,可提供应用场景以便给出更具体的选型方案。

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