WMSIC Electronic Components

cjiang FNR3012S2R2MT

ModelFNR3012S2R2MT
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
cjiang FNR3012S2R2MT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR3012S2R2MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.067g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0264590516
Current
1.7A
Resistor(DCR)
98mΩ
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.

FNR3012S2R2MT 功率电感 产品概述

一、产品简介

FNR3012S2R2MT 是长江微电(cjiang)推出的一款小型磁胶屏蔽功率电感,标称电感值 2.2µH,器件采用 SMD 封装(3.0×3.0mm),适合在空间受限的高密度电源模块中使用。该器件面向开关电源、DC-DC 转换器及电源滤波场景,兼顾电流承载能力与电磁兼容性。

二、主要性能参数

  • 电感值:2.2µH(±20%),实际范围约 1.76µH ~ 2.64µH
  • 直流电阻(DCR):98mΩ(0.098Ω)
  • 额定电流(I_rated):1.7A(连续工作限值)
  • 饱和电流(I_sat):1.9A(电感显著下降前的峰值限制)
  • 类型:磁胶屏蔽电感(屏蔽结构,抑制外磁场辐射)
  • 封装:SMD,外形 3×3mm
  • 品牌:cjiang(长江微电),型号:FNR3012S2R2MT

三、特性与优势

  • 体积小、功率密度高:3×3mm 的标准 SMD 外形,适合移动设备和高密度板级电源设计。
  • 良好电磁兼容性:磁胶屏蔽结构降低磁通泄漏,便于通过 EMI 要求和缩减布局隔离。
  • 合理的电流能力:1.7A 的额定电流可满足许多中低功率开关稳压器需求,2.9A 的饱和电流保证短时峰值余量(器件 I_sat 为 1.9A)。
  • 可预测的损耗:在额定电流下,铜损约为 P = I^2·DCR ≈ 1.7^2×0.098 ≈ 0.28W,便于热设计与散热评估。

四、典型应用场景

  • 同步 / 非同步降压(Buck)转换器的电感储能单元;
  • 电源滤波器(输入/输出滤波);
  • 移动设备电源管理、板载点电源(POL)模块;
  • 工业控制与消费电子中需要屏蔽且占板面积受限的电源场合。

五、使用建议与注意事项

  • 电流选型:建议连续工作电流不超过额定 1.7A;若工作有较多峰值脉冲,可确保峰值不超过 1.9A 并做适当降额。
  • 温升与散热:DCR 引起的铜损会导致器件发热,散热能力取决于 PCB 铜箔面积与过孔散热,建议在布局上增加散热铜箔和焊盘面积以降低温升。
  • 布局要点:输入端与开关节点短距离连接,输出电容靠近电感与负载,保证最小化环路面积以降低 EMI。屏蔽结构有利于邻近敏感电路布局。
  • 焊接与可靠性:遵循厂家推荐的回流焊接曲线与储存处理规范,避免长时间超温或潮湿环境影响性能。
  • 元件容差:±20% 的电感容差在滤波与储能计算时需计入裕量,关键回路应按最坏情况(最低感值)验证稳定性与纹波。

六、封装与采购信息

  • 封装形式:SMD,尺寸 3×3mm,型号 FNR3012S2R2MT;
  • 适配市场:适用于需要屏蔽性能与中等电流承载的小型功率电感方案;
  • 选购提示:如系统对电感容差或 DCR 有更严苛要求,可与供应商确认批次测试数据或选择精度更高、或更低 DCR 的替代型号。

总结:FNR3012S2R2MT 为一款面向中小电流开关电源和滤波应用的磁胶屏蔽 SMD 功率电感,在体积、屏蔽和电流承载之间取得平衡,适用于对 EMI 有要求且板面积受限的场合。选型时应综合考虑额定/峰值电流、温升与电感容差对电路性能的影响。

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