WMSIC Electronic Components

cjiang FXL0412-1R0-M FXL0412

ModelFXL0412-1R0-M
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
cjiang FXL0412-1R0-M
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FXL0412-1R0-M
Electronic Component
1
Package
SMD
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.193g
Inductor
1uH
Electronic Component
1
Electronic Component
BM0264590520
Current
4.5A
Resistor(DCR)
47mΩ
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.

FXL0412-1R0-M 产品概述

一、产品简介

FXL0412-1R0-M 是长江微电(cjiang)推出的一款一体成型功率电感,标称电感值为 1.0 μH,主要面向中小功率开关电源和点位负载(Point-of-Load)滤波场合。器件为 SMD 封装,尺寸 4.2 × 4.4 mm,结构紧凑、磁屏蔽性好、适合高密度应用。

二、主要参数

  • 电感值:1.0 μH ±20%
  • 额定电流(Irated):4.5 A(持续工作电流)
  • 饱和电流(Isat):5.5 A(达到厂商定义的饱和判据时的电流)
  • 直流电阻(DCR):47 mΩ
  • 类型:一体成型功率电感(molded)
  • 封装:SMD,外形尺寸 4.2 × 4.4 mm
  • 品牌:cjiang(长江微电)

三、电性能与热损耗估算

DCR 对于功率损耗影响直接,按 I^2·R 计算:

  • 若在额定电流 4.5 A 下,铜损约为 P = 4.5^2 × 0.047 ≈ 0.95 W。
    该功耗会导致器件升温,实际温升还取决于 PCB 散热、周围元件热耦合以及工作占空比与开关频率。饱和电流 5.5 A 表明在超过该电流时电感量将明显下降,应避免长期运行在接近或超过该值的条件下,典型定义为电感下降到初始值的某一比例(参照厂商 Datasheet 具体说明)。

四、应用场景

  • DC-DC 降压型电源(同步整流或非同步)输出滤波电感
  • 点位电源(Vo 输出滤波)与电源模块内置元件
  • 通信设备、消费电子、工控设备中的中大电流滤波与储能
    适合需要较高电流承载能力且占板空间受限的场合。

五、封装与 PCB 布局建议

  • 推荐在靠近开关管与输出电容处布局,以减少环路面积和 EMI。
  • 由于 DCR 导致显著发热,建议在电感下方及附近提供多层铜散热通道或加大焊盘面积,以改善热传导。
  • 建议在选型和布局时对电流做适当降额(例如长期工作电流控制在额定电流的 70%–80% 范围内),以降低温升并延长寿命。
  • 焊接:可采用无铅回流焊常规工艺,具体回流曲线和焊接工艺参数请参考厂商 Datasheet。

六、可靠性与选型注意

  • 使用前请获取并核对厂商完整 Datasheet,确认 Isat 的定义、温升测试条件和耐热等级等关键项目。
  • 若工作环境温度较高或散热条件受限,应适当增大余量或选择更低 DCR 的替代型号。
  • 对于对 EMI/噪声敏感的设计,应配合输入/输出电容与布局优化,必要时进行电磁兼容测试。

七、典型电路提示与替代方案

  • 在同步降压转换器中,1 μH 对于中等开关频率(几百 kHz)常作为输出滤波元件;对于更高频率或更低纹波需求,可考虑减小电感值或并联多个电感/电容组合。
  • 若负载电流接近或超过饱和电流,应考察同系列更大电流等级或选择更低 DCR 的型号以减小损耗与温升。

总结:FXL0412-1R0-M 以其紧凑封装和较高电流承载能力适合多种中小功率电源应用,但 DCR 较大时会带来接近瓦级的铜损,选型与 PCB 散热布局需充分考虑实际工作电流与环境条件。欲获得更详细的热特性、饱和曲线与机械尺寸公差,请向长江微电索取完整 Datasheet。

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