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cjiang FNR6045S390MT
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR6045S390MT
- Type
- CJIANG
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR6045S390MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.834g
- Inductor
- 39uH
- Electronic Component
- 1
- Electronic Component
- BM0264900040
- Current
- 1.4A
- Resistor(DCR)
- 234mΩ
- 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.
FNR6045S390MT 产品概述
一、产品简介
FNR6045S390MT 是长江微电（cjiang）推出的一款磁胶屏蔽功率电感，标称电感值 39 µH，公差 ±20%，为表面贴装（SMD）封装，封装尺寸 6×6 mm，适用于各类开关电源与电源管理电路。该器件以磁屏蔽结构为主，兼顾体积与电磁兼容性，适合中低电流点负载及滤波应用。
二、主要电气参数
- 电感值：39 µH（±20%）
- 额定电流（Ir）：1.4 A（连续允许工作电流）
- 饱和电流（Isat）：1.6 A（在规定条件下电感显著下降时的电流）
- 直流电阻（DCR）：234 mΩ
- 类型：磁胶屏蔽电感，SMD
示例功耗估算：在额定电流 1.4 A 时，直流损耗约为 P = I^2·DCR ≈ 1.4^2 × 0.234 ≈ 0.46 W。实际温升与损耗受频率、纹波电流及散热条件影响，应在设计中考虑热裕度和退让空间。
三、结构与特性要点
- 磁胶屏蔽：降低外泄磁场和对周边敏感元件的干扰，有助于系统电磁兼容（EMC）设计。
- SMD 封装（6×6 mm）：便于自动贴装与回流焊过程，适合批量生产与表面贴装工艺。
- 高饱和电流比：Isat 稍高于额定电流，能在短时大电流冲击下维持性能，但连续工作应以额定电流为准，避免进入饱和区导致电感值急剧下降。
四、典型应用场景
- 降压/升压 DC-DC 转换器（中低功率点）
- 电源滤波与去耦（输入输出滤波）
- LED 驱动、电机驱动及便携式设备电源管理
- 点式负载（POL）模块和通信设备电源模块
五、选型与使用建议
- 电流退让：为保证长期可靠性及控制温升，建议实际纹波电流与直流工作电流不超过额定电流 80% 左右，避免长期在饱和附近工作。
- 频率匹配：39 µH 为较大的电感值，适合较低开关频率或作为输出滤波元件；在高频（数百 kHz 以上）应用需验证损耗与磁滞特性。
- 热管理与焊接：考虑 DCR 导致的功耗，PCB 走铜与散热设计应充分，采用规范的 SMD 回流焊工艺并遵循厂家回流温度曲线。
- 布局注意：尽量将电感与开关器件合理布局，输入输出旁路电容靠近电感两端以降低寄生与 EMI；虽然为屏蔽型，仍应避免靠近极其敏感的小信号器件。
六、采购与机械信息
- 品牌：cjiang（长江微电）
- 型号：FNR6045S390MT
- 封装：SMD，标称尺寸 6×6 mm
- 包装方式：通常为盘卷（Tape & Reel），适合自动贴装（具体包装与出货形式请确认供应商资料）
如需更完整的技术数据（温度特性曲线、频率响应、饱和判定条件、推荐焊盘尺寸及回流曲线等），建议向长江微电索取器件详尽数据手册（Datasheet）和可靠性报告，以便在具体电路中完成最终验证与可靠性评估。
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