WMSIC Electronic Components

cjiang FNR3015S2R2MT

ModelFNR3015S2R2MT
PackageSMD,3x3mm
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 FNR3015S2R2MT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR3015S2R2MT
Electronic Component
1
Package
SMD,3x3mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.075g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0227694072
Current
2A
Resistor(DCR)
78mΩ
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.

FNR3015S2R2MT 产品概述

一、产品简介

FNR3015S2R2MT 是长江微电(cjiang)推出的一款磁胶屏蔽功率电感,封装为 SMD 贴片式,尺寸 3.0 × 3.0 mm,标称电感值 2.2 μH,精度 ±20%。该器件针对开关电源和点对点电源模块设计,强调高密度布局下的电流承载与磁屏蔽性能,适合移动设备、电源模块和各类功率接口电路。

二、主要规格参数

  • 电感值:2.2 μH ±20%
  • 饱和电流(Isat):2 A(标称)
  • 额定电流:2 A
  • 直流电阻(DCR):78 mΩ(0.078 Ω)
  • 类型:磁胶屏蔽电感(magnetic glue shielded)
  • 封装:SMD,3×3 mm
  • 品牌:cjiang(长江微电)

说明:在额定电流 2 A 下,直流功耗约为 P = I^2·R = 2^2×0.078 ≈ 0.312 W,实际发热与封装散热、PCB 走线和环境温度相关。

三、性能与优势

  • 小型化封装:3×3 mm SMD 外形适合高密度 PCB 布局,节省空间。
  • 良好电流承载能力:2 A 的额定与饱和电流适用于中小功率点对点转换和输出滤波。
  • 磁屏蔽设计:磁胶屏蔽结构有效抑制外泄磁通,降低对周围敏感器件的干扰,使元件可靠近其他器件放置。
  • 可接受的导通损耗:78 mΩ 的 DCR 在同类小尺寸电感中处于合理范围,须注意在高电流下的热耗散。
  • 通用性强:2.2 μH ±20% 适用于输出滤波、升降压开关电源的储能电感及输入滤波场合。

四、典型应用场景

  • 手机、平板等便携设备的 DC-DC 输出滤波与储能电感;
  • 模块化电源及点对点供电(POL)应用;
  • 车载电子低功耗电源(需注意工作温升与环境);
  • 电源管理芯片外围滤波、电流输出环节。

五、选型与使用建议

  • 电流裕量:虽然标称 Isat 与额定电流均为 2 A,但建议在实际电路中留有裕量(例如峰值电流或瞬态电流应低于 Isat),以避免磁饱和导致电感值显著下降。
  • 温升与散热:在 2 A 连续工作条件下器件功耗约 0.31 W,需评估 PCB 走线、铜厚和周围散热条件,必要时通过加大焊盘、增加散热铜箔或复合散热手段降低结温。
  • 电感容差:±20% 的容差意味着在精密滤波或谐振电路中需考虑最坏情况,若对输出纹波或频率敏感,建议预留调试空间或选择更高精度器件。
  • 器件退磁/退化:长期过流或高温会导致磁性材料性能退化,应在设计中考虑老化与可靠性冗余。

六、封装与安装注意事项

  • 贴片焊接:建议采用标准的 SMT 回流焊流程并参考厂商的推荐焊盘设计。合理的焊盘尺寸和铜面积有助于散热与机械强度。
  • 放置与方向:尽管为屏蔽结构,仍应尽量避免与极端敏感的模拟信号元件直接重叠,保持合理间距以利热管理。
  • 焊接后检测:建议进行外观与阻抗检测,必要时在样机上验证实际电感值、DCR 与热升等关键参数。

七、采购与品牌说明

FNR3015S2R2MT 由 cjiang(长江微电)生产,适合追求尺寸小、磁屏蔽好且电流需求在 2 A 左右的应用场景。选购时请确认批次数据表以获得完整的温度特性、频率特性及推荐焊盘图,必要时向供应商索取样片进行实测验证。

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