WMSIC Electronic Components

cjiang FXL0420-3R3-M FXL0420

ModelFXL0420-3R3-M
PackageSMD,4.2x4.4mm
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 FXL0420-3R3-M
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FXL0420-3R3-M
Electronic Component
1
Package
SMD,4.2x4.4mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.297g
Inductor
3.3uH
Electronic Component
1
Electronic Component
BM0230519429
Current
3.3A
Resistor(DCR)
87mΩ
Electronic Component
Electronic Component
Electronic Component
3000

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

FXL0420-3R3-M — 3.3µH 一体成型功率电感产品概述

一、产品概述

FXL0420-3R3-M 是长江微电(cjiang)推出的一款 SMD 一体成型功率电感,标称电感量 3.3µH,公差 ±20%。封装尺寸紧凑,为 4.2 x 4.4 mm,适配高密度 PCB 布局。该器件面向开关电源与功率滤波应用,具有良好的电流承载能力和机械可靠性。

二、主要电气参数

  • 电感值:3.3 µH ±20%
  • 额定电流(Irated):3.3 A(温升和长期工作参考值)
  • 饱和电流(Isat):4 A(在此电流下电感显著降额)
  • 直流电阻(DCR):约 87 mΩ(25°C 标称)
  • 类型:一体成型(molded)功率电感
  • 封装形式:SMD,外形 4.2 x 4.4 mm

三、关键特性与优势

  • 大电流能力:额定电流 3.3A、饱和电流 4A,适合中小功率降压(buck)和电流输出场合。
  • 低阻抗损耗:87 mΩ 的 DCR 在其尺寸档位中有利于降低导通损耗,提高转换效率。
  • 结构稳固:一体成型结构增强抗振动与抗热冲击能力,适合工业级和消费类设备的可靠性要求。
  • 小尺寸封装:4.2×4.4 mm 占板面积小,便于高密度布局与多相电源并联设计。

四、典型应用场景

  • DC-DC 降压转换器(单相或多相)
  • 电池管理与电源管理模块(PMIC)
  • LED 驱动、通信设备、工业控制电源滤波
  • 嵌入式系统与便携设备的功率滤波与储能回路

五、设计与选型建议

  • 电流裕量:设计时应以电感峰值电流(Ipk)与 Isat 比较,建议 Isat 至少高于 Ipk 的 20%~30% 以避免在瞬态时进入饱和区;额定电流用于温升与连续工作评估。
  • DCR 与效率:87 mΩ 的 DCR 会在较高输出电流时产生显著 I²R 损耗,若系统对效率敏感可考虑并联或选择更低 DCR 的型号。
  • 电感公差 ±20%:在电流纹波和环路设计中应考虑电感可能偏差带来的纹波电流波动,必要时做容差验证或采用严格匹配策略。
  • 工作频率:本型号适用于典型的开关频率范围(数十 kHz 至数百 kHz);实际应用中应评估电感在目标频段的损耗和温升(参考样品测试)。

六、焊接与封装注意事项

  • 推荐采用无铅回流焊工艺,遵循供应商的温度曲线与板面铺锡建议以保证焊点可靠性。
  • 设计过孔与散热铜箔时注意平衡焊盘大小与热量散布,避免局部过热影响电感性能。
  • 置放时保证足够的阻抗环路面积控制,合理安排输入/输出电容靠近电感与开关器件。

七、可靠性与存储建议

  • 储存环境避免高温高湿及强腐蚀性气体,长期储存建议密封防潮包装。
  • 评估环境温度对 DCR 与额定电流的影响,必要时对热路径进行改善以降低工作温升。

八、选型小结

FXL0420-3R3-M 以其紧凑封装、较高电流能力和可接受的 DCR 特性,适合中小功率开关电源与功率滤波场景。在选型时应关注电流裕度、效率需求与电感容差对电路纹波与稳定性的影响;对于要求更低损耗或更严格容差的应用,可并行器件或考虑其他技术规格更优的型号。若需进一步的电气曲线或推荐封装焊盘,请联系供应商获取详细规格书与 PCB land pattern。

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