WMSIC Electronic Components

cjiang FNR3015SR50NT

ModelFNR3015SR50NT
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 FNR3015SR50NT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR3015SR50NT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±30%
Electronic Component
0.075g
Inductor
500nH
Electronic Component
1
Electronic Component
BM0265139719
Current
2.8A
Resistor(DCR)
39mΩ
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.

FNR3015SR50NT 功率电感产品概述

一、产品概述

FNR3015SR50NT 为长江微电(cjiang)推出的一款磁胶屏蔽功率电感,封装为 SMD,外形尺寸 3×3 mm。标称电感量 500 nH,公差 ±30%,额定电流 2.8 A,饱和电流(Isat)4.2 A,直流电阻(DCR)约 39 mΩ。该器件针对开关电源、点到点供电和电源滤波等场景,提供小体积、高电流通过能力与屏蔽特性相结合的解决方案。

二、主要特性

  • 小型化 SMD 封装:3×3 mm 占板面积小,适合高密度布局。
  • 磁胶屏蔽结构:降低磁通泄露,便于邻近元件布局,减少电磁干扰(EMI)。
  • 高通电能力:额定连续电流 2.8 A,短时或非线性工况下饱和电流可达 4.2 A。
  • 低 DCR:约 39 mΩ,有利于降低导通损耗,提高效率。

三、电气参数(关键)

  • 电感值:500 nH ±30%
  • 额定电流:2.8 A(连续)
  • 饱和电流(Isat):4.2 A(典型饱和点)
  • 直流电阻:39 mΩ(典型)
  • 封装:SMD,尺寸 3×3 mm

四、功耗与热管理

基于 DCR 可估算导通损耗:

  • 在额定电流 2.8 A 时,损耗约 P = I^2·R = 2.8^2×0.039 ≈ 0.306 W;
  • 在饱和电流 4.2 A 时,损耗约 0.69 W。
    实际温升受 PCB 散热、环境和频率影响,建议在设计中留有裕量并进行热仿真或实测验证。

五、典型应用场景

  • DC-DC 降压/升压转换器的输出电感或输入滤波电感;
  • 多相电源模块的电感单元;
  • 移动设备、通信设备、工业控制板上中低功率点对点供电和 EMI 滤波。

六、选型与使用注意

  • 工作电流应优先以额定电流 2.8 A 为准,长时间工作尽量在额定值以下以降低发热与避免磁饱和;
  • 若电路存在短脉冲大电流,需关注饱和电流 4.2 A 与对应电感下降对系统的影响;
  • 由于电感公差 ±30%,在对电感值要求严格的滤波或谐振场合,应考虑选用更小公差或配合测试与调校。

七、PCB 布局与焊接建议

  • 紧邻电感的电流路径(MOSFET、输出电容)尽量走短粗导线,降低回路面积以减少 EMI;
  • 通过过孔和铜箔增加散热路径;对于高电流应用,建议在器件底部附近增加厚铜区域以提升散热;
  • 采用常规回流焊工艺,遵循器件资料中推荐的焊接曲线与温度峰值(如无资料,按通用无铅回流规范处理)。

八、可靠性与质量控制

选择长江微电(cjiang)品牌时,应关注批次一致性与出厂测试报告(DCR、Isat、外观检验)。在样机阶段建议进行电感值、DCR、温升及寿命加速试验以确认在目标工况下的稳定性。

九、采购与包装

型号:FNR3015SR50NT;品牌:cjiang(长江微电);封装:SMD 3×3 mm。采购时请向供应商确认最小起订量、出厂测试数据(如 DCR 与 Isat 测试条件)及可提供的封装卷带信息,以便快速投入生产。

如需将本器件用于特定电源拓扑(例如同步降压、多相或高频开关),可提供电路条件,我可协助进行更细致的选型与布局建议。

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