WMSIC Electronic Components

cjiang FTW1608FE4R7KT

ModelFTW1608FE4R7KT
Package0603
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 FTW1608FE4R7KT
Type
CJIANG
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FTW1608FE4R7KT
Electronic Component
1
Package
0603
Electronic Component
Power Inductor
Electronic Component
±10%
Electronic Component
0.025g
Inductor
4.7uH
Electronic Component
1
Electronic Component
BM0257699595
Current
420mA
Resistor(DCR)
790mΩ
Electronic Component
Electronic Component
Electronic Component
4000
and Current(Isat)
400mA

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

FTW1608FE4R7KT 产品概述

FTW1608FE4R7KT 是长江微电(cjiang)推出的一款 0603 封装功率电感,标称电感值 4.7 µH,公差 ±10%,面向小型化开关电源与电源滤波场景。其额定电流为 420 mA,饱和电流(Isat)约 400 mA,直流电阻(DCR)约 790 mΩ,兼顾体积、通流能力与成本,适用于体积受限但对电感值有严格要求的移动、便携及工业电子产品中。

一、主要参数一览

  • 电感值:4.7 µH ±10%
  • 额定电流:420 mA(长期允许通过且在规定温升内工作)
  • 饱和电流(Isat):400 mA(超过此电流时电感量显著下降)
  • 直流电阻(DCR):约 790 mΩ(典型值)
  • 封装:0603(等同 1608 公制尺寸)
  • 品牌:cjiang(长江微电)

二、产品特性与优势

  • 小外形:0603/1608 封装,适合高密度 PCB 布局与微型化电源设计。
  • 合理通流能力:420 mA 的额定电流能满足多数小功率 DC-DC 降压模块与滤波器需求。
  • 稳定电感:在额定工况下保持较稳定的电感值,适用于连续模式电感或输入/输出滤波。
  • 成本效益高:常规材料与生产工艺,适合量产且价格敏感的应用场景。

三、典型应用场景

  • 移动设备与便携电子(蓝牙模块、可穿戴、手持终端)
  • 小功率 DC-DC 降压/升压转换器(尤其在占板面积受限时)
  • 电源输入/输出 EMI 滤波与去耦
  • 工业控制、仪表中对体积及电感值有要求的电源滤波点

四、选型与设计注意事项

  • 电流选型:额定电流 420 mA 是在允许的温升下长期工作的参考值;若实际电流接近或超过 Isat(400 mA),电感值会显著下降,应考虑选用更大电流规格或并联方案。
  • 温升与纹波电流:实际应用中需计算纹波电流与平均电流的叠加导致的温升,必要时遵循芯片/模块制造商的电感选用指南并留有裕量。
  • DCR 考量:790 mΩ 的 DCR 在效率敏感的电源设计中会引入较大损耗,评估整体效率时应将该损耗计入。
  • 饱和特性:对于脉冲电流或瞬态过载,关注 Isat 行为,避免在饱和区域频繁工作导致 EMI 与失稳。

五、封装与安装建议

  • PCB 焊盘:0603 尺寸对焊盘设计和工艺敏感,建议按照厂家推荐的焊盘尺寸与过孔布局,保证焊接可靠性与热传导。
  • 回流焊工艺:兼容标准无铅回流温度曲线,但建议在工艺定型时确认电感对回流温度的实际耐受性。
  • 储存与搬运:避免强冲击与静电、高温湿热环境,贴片元件易受机械应力影响导致失效。

六、可靠性测试与质量检验

  • 常规入厂测试包含 LCR 电容测量(电感值与 Q 值)、DCR 测试以及外观检验。
  • 功率老化与温度循环试验用于验证长期稳定性;对关键应用建议进行纹波电流与热循环评估。

总结:FTW1608FE4R7KT 以其 0603 微小封装与 4.7 µH 的电感值,适合对体积和布局有严格限制的中低功率电源滤波应用。选型时重点关注实际工作电流与纹波,在接近 Isat 或高 DCR 带来效率损失的情况下宜预留余量或选用更大规格器件。若需更详细的温升曲线、频率响应(阻抗-频率)、焊盘推荐图或可靠性标准报告,可向供货商获取规格书与测试数据。

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