WMSIC Electronic Components

cjiang FNR5040S270MT

ModelFNR5040S270MT
PackageSMD
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 FNR5040S270MT
Type
CJIANG
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR5040S270MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.579g
Inductor
27uH
Electronic Component
1
Electronic Component
BM0265018920
Current
1.25A
Resistor(DCR)
244mΩ
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.

FNR5040S270MT 产品概述

一、产品简介

FNR5040S270MT 是长江微电(cjiang)推出的一款贴片功率电感,封装尺寸为 5×5mm,属于磁胶屏蔽型功率电感。额定电感值为 27 μH(公差 ±20%),额定电流 1.25 A,饱和电流(Isat)1.75 A,直流电阻(DCR)约 244 mΩ。该器件针对开关电源与电源滤波场景优化,兼顾体积、耐流性与抑制电磁干扰的能力。

二、主要特性

  • 电感值:27 μH,适用于中低频开关环节的储能与滤波。
  • 精度:±20%,满足一般电源设计对电感容差的要求。
  • 额定电流:1.25 A,饱和电流 1.75 A,保证在瞬态突发电流下不易饱和。
  • 直流电阻:244 mΩ,低 DCR 有助于降低功耗与温升。
  • 磁胶屏蔽结构:减小磁通泄漏,降低对周围电路的干扰,便于并行布线密集的应用。
  • SMD 封装:支持常见回流焊工艺,便于自动化贴装与批量生产。

三、典型应用场景

  • 降压/升压型 DC-DC 转换器的功率电感或输出滤波电感;
  • 消费类电子(移动电源、平板、便携设备)电源模块;
  • 通信设备与网络设备的局部电源滤波;
  • LED 驱动、电机驱动等需中等电流储能的应用场景。

四、选用与设计注意事项

  • 工作电流应优先参考额定电流 1.25 A,并根据系统允许的电感下降与温升进行适当裕量设计,避免长期运行接近 Isat。
  • 注意电感在不同温度下的电流承载能力与 DCR 变化,必要时留有热裕度或散热设计。
  • 若电路存在较大纹波电流,应评估电感的损耗与温升,必要时选择 DCR 更低或 Isat 更高的型号。
  • 对于要求更高电磁兼容的设计,可配合屏蔽罩、走线屏蔽或布局优化进一步抑制辐射。

五、PCB 布局与焊接建议

  • 将 FNR5040S270MT 靠近开关管或整流器放置,缩短能量传输回路,减少寄生电感与环路面积;
  • 输入和输出电容应与电感形成紧凑布局,保证滤波效果并降低纹波电压;
  • 采用合适的焊盘尺寸与热量分布,遵循厂商推荐的回流焊曲线进行贴片与回流,避免过热导致性能退化;
  • 对于多层板,可在器件下方加入散热铜箔或过孔以改善热散。

六、采购与替代建议

标准订货请使用完整型号 FNR5040S270MT,并向长江微电或其授权代理咨询包装(卷盘)、最小起订量与样品获取。若需更低 DCR 或更高饱和电流,可参考同类功率电感中标称电感相近但 DCR/Isat 优化的型号,选型时比对电感值、DCR、Isat 及封装尺寸以保证兼容。

以上为 FNR5040S270MT 的关键概述与应用提示,可作为电源设计与器件选型的参考基础。若需提供典型等效电路、温升测试数据或 PCB 封装建议图,可进一步联系以获取详细资料。

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