WMSIC Electronic Components

cjiang FNR6045S221MT

ModelFNR6045S221MT
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
cjiang FNR6045S221MT
Type
CJIANG
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR6045S221MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.834g
Inductor
220uH
Electronic Component
1
Electronic Component
BM0258614559
Current
650mA
Resistor(DCR)
1.084Ω
Electronic Component
Electronic Component
Electronic Component
1500

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

FNR6045S221MT 产品概述

一、产品简介

FNR6045S221MT 是长江微电(cjiang)推出的一款磁胶屏蔽型功率电感,封装为 SMD,外形约 6×6 mm。标称电感量 220 μH,公差 ±20%,适用于中低功率的滤波与能量储存场合。器件采用磁胶屏蔽结构,磁通泄露小、抗干扰性能良好,适合空间受限且对 EMI 有一定要求的电路板设计。

二、主要电气参数

  • 电感值:220 μH,公差 ±20%
  • 额定电流(Irated):650 mA(连续工作建议值)
  • 饱和电流(Isat):770 mA(开始出现显著电感下降的参照值)
  • 直流电阻(DCR):1.084 Ω
  • 类型:磁胶屏蔽电感(SMD)
  • 尺寸:6×6 mm(SMD 封装)

说明:Isat 为器件进入磁饱和、原始电感量明显下降时的参考电流。厂商通常以电感下降到初始值的某一比例(如 30%~50%)作为饱和判断依据,因此在接近 Isat 时电感量会显著降低,应在电路设计时预留裕量。

三、典型应用场景

  • 开关电源输入/输出滤波(中低电流等级)
  • DC-DC 降压/升压模块的储能电感(小功率转化)
  • 电源线上 EMI/噪声抑制与射频滤波
  • 工业控制和通信设备中对体积与屏蔽有要求的滤波网络

该器件适合对电感量要求较高但工作电流在数百毫安量级的场合;若系统电流经常接近或超过饱和电流,应考虑选用更大电流等级的电感。

四、热耗与选型注意

由于 DCR 较高(1.084 Ω),在额定电流下的直流功耗不可忽视:

  • 在 Irated = 0.65 A 时,直流功耗 P = I^2·R ≈ 0.65^2 × 1.084 ≈ 0.46 W
  • 在 Isat = 0.77 A 时,P ≈ 0.77^2 × 1.084 ≈ 0.64 W

建议设计时:

  • 长期工作电流尽量控制在额定值的 60%~80% 范围内(推荐 ≤70%),以减少温升并避免接近饱和区;
  • 在布局时为电感周围留出散热空间,并通过铜箔和过孔辅助散热;
  • 对于对温升敏感或连续大纹波电流场合,考虑改用低 DCR 或更大电流等级的电感件。

五、封装与安装建议

  • 封装:SMD,6×6 mm,适合自动贴装与回流焊工艺;
  • 焊接建议:遵循所用焊膏与PCB工艺的回流曲线,避免长时间高温导致焊盘或基材应力;
  • PCB 布局:输入/输出滤波时,电感应靠近器件或接口放置以减少寄生环路;屏蔽式结构可减少对周围敏感器件的磁干扰;
  • 机械应力:贴装过程中避免对器件施加过大弯曲或压力,防止磁胶粘结层损伤。

六、品质与可靠性

磁胶屏蔽结构在降低外泄磁场方面有优势,但在应用中仍需注意长期温度循环和潮湿环境对磁性体与胶粘层的影响。建议在可靠性验证阶段进行温升测试、热循环、震动与焊接耐久性验证,确认在目标工况下电感量与 DCR 的稳定性。

七、订购与使用建议

  • 型号:FNR6045S221MT
  • 品牌:cjiang(长江微电)
  • 适用建议:若电路中直流或纹波电流经常接近 0.5 A 或以上,应重点评估功耗与温升;需要更低损耗时,考虑选用 DCR 更低或额定电流更高的系列。
  • 检验项:到货后建议抽样测量 DCR、标称电感值及外观,确保一致性。

如需更详细的电感频率特性曲线、饱和特性曲线或封装尺寸图用于 PCB 布局与热仿真,可联系供应商索取器件数据手册和应用笔记。

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