WMSIC Electronic Components

cjiang FNR252012S8R2MT

ModelFNR252012S8R2MT
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 FNR252012S8R2MT
Type
CJIANG
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR252012S8R2MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.046g
Inductor
8.2uH
Electronic Component
1
Electronic Component
BM0265018923
Current
710mA
Resistor(DCR)
658mΩ
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.

FNR252012S8R2MT 磁胶屏蔽功率电感产品概述

一、产品基本定位与核心属性

FNR252012S8R2MT是长江微电(cjiang) 推出的一款磁胶屏蔽功率电感,专为中低功率电路的储能、滤波需求设计。产品采用表面贴装(SMD)封装,尺寸规格对应公制252012(2.5mm×2.0mm×1.2mm)或英制1008,适配高密度PCB布局,兼具小型化与低EMI优势,是便携式设备、IoT终端等场景的理想选择。

二、核心电气参数详细解析

1. 电感值与精度

标称电感值为8.2μH,精度±20%,满足大部分中低功率DC-DC变换、电源滤波电路的储能要求。±20%的精度覆盖了批量生产的一致性,无需额外高精度校准,可降低电路设计调试成本。

2. 电流特性

  • 额定电流(Irms):710mA
    指电感在额定温度下持续工作时,温度上升不超过允许值的最大直流电流。设计时需确保实际工作电流低于此值,避免线圈过热导致性能衰减或损坏。
  • 饱和电流(Isat):1.1A
    指电感值下降30%时的临界电流,为峰值电流提供安全余量(如DC-DC电路的瞬间负载波动、开关尖峰电流),避免电感饱和后储能能力骤降。

3. 直流电阻(DCR):658mΩ

反映电感线圈的直流损耗,低DCR可减少功率损耗、降低发热,提升电路效率(尤其适合电池供电的便携式设备,延长续航时间)。

三、关键性能优势说明

1. 低EMI特性

磁胶屏蔽结构有效抑制电感工作时的电磁辐射,减少对周边敏感电路(如射频模块、模拟传感器)的干扰,符合EMC电磁兼容要求,无需额外增加屏蔽件。

2. 小型化与高集成度

252012紧凑封装适配轻薄化设备(如智能手表、IoT传感器节点),节省PCB空间,支持电路高密度集成。

3. 宽温可靠性

工作温度范围为**-40℃至125℃**(长江微电常规规格),适应工业、车载等宽温环境;焊接温度支持260℃/10s(回流焊),兼容标准SMT工艺,无热应力损坏风险。

4. 高一致性

批量生产参数波动小(电感值、DCR等指标一致性达95%以上),可降低电路批量生产的一致性风险。

四、典型应用场景

  1. 便携式电子设备:智能手机、平板电脑、智能手表的电源管理模块(DC-DC降压电路);
  2. IoT与智能终端:智能家居传感器节点、智能手环、无线充电接收端的滤波与储能;
  3. 小型消费电子:手机充电器、机顶盒、路由器的电源电路;
  4. 低功耗汽车电子:车载USB接口、仪表盘辅助电路的辅助电源。

五、选型与使用注意事项

  1. 电流余量设计:实际工作直流电流需控制在710mA以内,峰值电流不超过1.1A(避免电感饱和);
  2. 精度匹配:若电路对电感精度要求高于±20%(如高精度滤波),需考虑其他高精度型号;
  3. 焊接工艺:采用回流焊时需遵循温度曲线(预热区150-180℃/60-120s,回流区220-250℃/30-60s),避免热冲击损坏磁芯;
  4. PCB布局:电感周边预留5mm以上空间,远离射频电路、模拟传感器等敏感组件,减少电磁耦合。

FNR252012S8R2MT凭借低EMI、小型化、高可靠性等优势,成为中低功率电路的高性价比选择,可满足多数消费电子与IoT设备的电感需求。

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