WMSIC Electronic Components

cjiang FNR3012S470MT

ModelFNR3012S470MT
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+

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Technical data

Product details

19 specifications

Core information

Product name
cjiang FNR3012S470MT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR3012S470MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.065g
Inductor
47uH
Electronic Component
1
Electronic Component
BM0264754153
Current
400mA
Resistor(DCR)
1.885Ω
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.

FNR3012S470MT 磁胶屏蔽功率电感产品概述

FNR3012S470MT是长江微电(cjiang)推出的一款小型化贴片式(SMD)磁胶屏蔽功率电感,专为低功耗、高密度布局的电子设备设计,凭借紧凑尺寸、稳定电气性能及低EMI特性,成为消费电子、物联网终端等领域的实用选型。

一、产品核心定位与设计特点

该电感属于磁胶屏蔽型功率电感,通过特殊树脂材料包裹磁芯实现双重优势:既减少电磁干扰(EMI)对外辐射,又避免金属屏蔽带来的额外体积与成本;同时磁胶的柔性结构可缓解振动对性能的影响。

封装上采用3×3mm SMD(对应3012封装规格,长3.0mm、宽3.0mm、高约1.2mm),适配小型化设备的高密度布局需求,贴片式设计支持自动化贴装,提升生产效率。

二、关键电气参数详解

1. 电感值与精度

标称电感值为47μH,精度±20%,属于工业级常规精度范围,可满足大部分电源滤波、储能场景(无需极高精度的普通DC-DC转换、输出滤波等)。实际应用中,±20%的偏差可通过设计裕量解决,不影响基本功能。

2. 电流特性

  • 额定电流(Irms):400mA:连续工作状态下,电感值变化≤10%(或温度上升≤40℃)的最大电流,正常工作建议电流不超过此值,避免性能衰减。
  • 饱和电流(Isat):350mA:磁芯饱和(电感值下降30%)的临界电流,选型核心参考——设计时需降额至70%-80%(≤280mA),否则电感储能能力骤降,导致电路电压波动。

3. 直流电阻(DCR)

标称1.885Ω,反映绕组铜损,数值越低损耗越小。该值在3×3mm封装的47μH电感中属中等水平,兼顾了电感值与损耗的平衡(若追求更低损耗需选择更大封装或更高成本材料)。

三、屏蔽特性与应用优势

磁胶屏蔽的核心价值体现在电磁兼容性(EMC):

  • 对外:减少电感磁场辐射,避免干扰射频模块、传感器等敏感电路;
  • 对内:降低外部电磁场对电感的影响,保证电感值稳定。

此外,磁胶电感成本低于金属屏蔽电感,重量更轻,适合对成本敏感、体积紧凑的消费电子(如TWS耳机、智能手环)。

四、典型应用场景

FNR3012S470MT的参数适配以下场景:

  1. 小型开关电源:USB PD快充适配器(辅助滤波)、手机充电器(低压差稳压输出滤波);
  2. 可穿戴设备:智能手环、手表的电源管理模块(DC-DC转换储能);
  3. 消费电子配件:蓝牙耳机、TWS耳机充电盒(低功耗滤波);
  4. 物联网终端:低功耗传感器节点(温湿度传感器、智能门锁电源模块)。

五、选型与使用注意事项

  1. 电流降额:实际工作电流≤280mA(饱和电流80%),避免磁芯饱和;
  2. 温度管理:工作环境温度≤85℃(磁胶最高工作温度105℃,预留裕量),高温场景需散热;
  3. 焊接工艺:回流焊峰值温度≤260℃,焊接时间≤10秒;波峰焊需注意引脚浸润性,避免虚焊;
  4. 布局建议:靠近电源输出端,减少线路寄生电感;与射频电路保持≥5mm距离,降低EMI干扰。

六、品牌与品质保障

长江微电(cjiang)专注功率电感研发生产,产品符合RoHS、REACH环保标准;FNR3012S470MT经高低温循环、振动测试,满足工业级与消费级设备长期稳定运行需求,适合中小批量至大规模生产选型。

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