WMSIC Electronic Components

cjiang FNR252012S100MT

ModelFNR252012S100MT
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 FNR252012S100MT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR252012S100MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.046g
Inductor
10uH
Electronic Component
1
Electronic Component
BM0264590599
Current
680mA
Resistor(DCR)
690mΩ
Electronic Component
Electronic Component
Electronic Component
2000

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

FNR252012S100MT 产品概述

一、产品简介

FNR252012S100MT 是长江微电(cjiang)推出的一款表面贴装(SMD)功率电感,标称电感量为 10 μH,公差 ±20%。该器件采用磁胶屏蔽结构,针对开关电源与功率滤波场合进行了优化,兼顾较高的电流承载能力与良好的电磁屏蔽性能,适用于空间受限的消费电子与工业电源模块。

二、主要电气参数

  • 电感值:10 μH(±20%)
  • 额定电流:680 mA(连续可用电流,建议参照厂方定义)
  • 饱和电流(Isat):880 mA(达到磁饱和时电感明显下降的参考值)
  • 直流电阻(DCR):690 mΩ
  • 类型:磁胶屏蔽功率电感
  • 封装:SMD,型号中的 “252012” 一般对应尺寸约 2.5 × 2.0 × 1.2 mm(请以厂方数据表为准)
  • 品牌:cjiang(长江微电)

三、结构与封装特点

FNR252012S100MT 采用磁性胶体/磁屏蔽工艺,使磁通在器件内部更有效地闭合,减小对周边电路的干扰。SMD 封装便于自动贴装和回流焊,适合高密度 PCB 布局。紧凑的体积使其适合便携设备和板上功率管理模块。

四、主要特性与优势

  • 良好的电流承载能力:额定电流 680 mA、饱和电流 880 mA,可满足中低功率开关稳压器和电源滤波需求。
  • 屏蔽性好:磁胶屏蔽设计降低对周围敏感器件(如 ADC、传感器、通信模块)的磁干扰。
  • 适合高密度组装:小尺寸 SMD 形态兼容自动化生产流程。
  • 可控损耗:直流电阻 690 mΩ 在设计时便于预估铜损与效率,便于热设计与散热预算。

五、典型应用场景

  • 降压/升压型 DC-DC 开关稳压器的能量储存或输出侧滤波;
  • 模拟/数字电源滤波,抑制开关噪声与输出纹波;
  • LED 驱动电源、便携式设备电源管理模块;
  • 通讯设备与工业控制中的中低功率磁性元件需求场合。

六、选型与应用注意事项

  • 电流余量与降额:额定电流 680 mA 是连续工作参考值,长期使用建议留有余量以避免温升与电感值下降。饱和电流 880 mA 为磁饱和时的参考,超过此值电感量会明显下降,影响电路稳定性。
  • 损耗计算:直流损耗可按 P = I^2 × DCR 估算。以额定电流 0.68 A 计算,P ≈ 0.68^2 × 0.69 ≈ 0.32 W,设计时应考虑该热量对周边元件和温升的影响。
  • 频率与电感容差:±20% 容差在高精度滤波或谐振电路中需预留裕量。不同工作频率下电感的频率响应(包括直流偏置下的 L 与 Q 值)会影响滤波效果,建议在目标工作条件下实测验证。
  • 布局建议:器件应靠近开关元件的功率节点,走短而宽的铜箔以降低寄生电阻与电感。避免将敏感信号线置于近旁,若空间允许可在器件下方或附近布置散热铜皮以利散热。

七、可靠性与测试建议

  • 在样机阶段,对电感在不同直流偏置电流下的感量变化、温升与功率损耗进行测量,以确认在目标工况下的性能稳定性。
  • 进行回流焊兼容性测试与跌落、振动等机械可靠性测试,确保 SMD 封装在自动化生产与使用环境中的可靠度。
  • 建议对批量器件进行批次 DCR、L 值抽检,重点关注高温、高湿条件下的性能漂移。

八、订购信息与包装

  • 型号:FNR252012S100MT
  • 品牌:cjiang(长江微电)
  • 封装:SMD(卷带包装常见于自动贴装生产线)
  • 订购时请确认数据表中的完整电气参数、机械尺寸与回流工艺规范;如需替代封装或更严格电流/损耗要求,可与供应商沟通定制或查询同系列其他规格型号。

总结:FNR252012S100MT 为一款适用于中低功率电源滤波与开关电源能量储存的磁胶屏蔽功率电感,其小型 SMD 封装与良好屏蔽性能适合对 EMI 与空间有要求的应用。选型时应重点关注电流降额、DCR 导致的功耗以及在工作频率与直流偏置下的电感保持性。若需更详细的频率特性、温升或封装尺寸,请参照厂方完整数据手册或咨询供应商技术支持。

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