WMSIC Electronic Components

cjiang FNR5020S4R7MT

ModelFNR5020S4R7MT
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 FNR5020S4R7MT
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR5020S4R7MT
Electronic Component
1
Package
SMD,5x5mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.181g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0257345303
Current
2.4A
Resistor(DCR)
74mΩ
Electronic Component
Electronic Component
Electronic Component
3000

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

FNR5020S4R7MT 产品概述

一、产品简介

FNR5020S4R7MT 是长江微电(cjiang)推出的一款表面贴装磁胶屏蔽功率电感,封装尺寸为 5×5mm,电感量 4.7 μH(精度 ±20%),适用于中等功率的开关电源与电流滤波场合。器件采用磁胶屏蔽结构,磁通泄漏小、抗干扰能力强,便于在空间受限且要求EMC性能较高的系统中应用。

二、主要电气参数

  • 电感值:4.7 μH ±20%
  • 额定电流(Ir):2.4 A(可长期通过且温升可控的工作电流)
  • 饱和电流(Isat):2.7 A(电感下降到初始电感一定比例时的参考值)
  • 直流电阻(DCR):约 74 mΩ
  • 类型:磁胶屏蔽电感(SMD)
  • 封装:5020(5.0 × 5.0 mm)

三、产品特点

  • 良好的电流承载能力:2.4 A 额定电流适合中功率降压模块与电源输出滤波。
  • 较高的饱和裕度:2.7 A 的 Isat 提供瞬态电流冲击时的保护余量。
  • 屏蔽结构:减小对周围电路的磁干扰,有利于满足 EMI 要求。
  • SMD 封装:适合自动贴片与回流焊工艺,便于大规模生产。
  • 低频至中频范围内损耗较低,适合 DC-DC 降压、升压与电流滤波用途。

四、典型应用场景

  • 开关电源输出电感(同步降压/非同步降压)
  • 模块化电源与电源管理单元(PMU)
  • 移动设备、工业控制与通信设备的输出滤波与储能
  • LED 驱动与车用电子(视温度与可靠性需求而定)

五、设计与使用建议

  • 热管理:在接近额定电流工作时注意PCB散热,避免长期在高温环境下使 DCR 引起过大功耗。
  • 饱和裕度:设计中应考虑瞬态电流峰值不超过 Isat,以免电感值骤降影响系统稳定性。
  • 布局建议:电感应尽量靠近开关元件和电容,输入与输出回路走线最短,减少环路面积以降低 EMI。
  • 滚焊工艺:遵循元器件制造商推荐的回流焊温度曲线与储存条件,避免长时间暴露于高温高湿环境。

六、选型与替代

选择时关注电感值与误差范围、额定电流与饱和电流、DCR 对效率的影响以及尺寸限制。若需要更高电流能力或更低 DCR,可考虑同尺寸或更大尺寸的功率电感替代;如对精度要求更高,可选择 ±10% 或 ±5% 的型号。

如需样品、详细封装图或更具体的电气特性曲线(如频率响应、温升曲线、磁饱和特性),建议联系供应商或查阅产品数据手册以获得完整参数与推荐封装尺寸。

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