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cjiang FNR5020S470MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR5020S470MT
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR5020S470MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.181g
- Inductor
- 47uH
- Electronic Component
- 1
- Electronic Component
- BM0264799445
- Current
- 840mA
- Resistor(DCR)
- 680mΩ
- 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.
FNR5020S470MT 功率电感产品概述
一 产品简介
FNR5020S470MT 是长江微电（cjiang）推出的一款磁胶屏蔽型贴片功率电感，封装尺寸约为5×5 mm，电感值为47 μH，公差±20%。该器件为面向功率滤波与能量存储的 SMD 电感，设计用于中低电流、对体积和磁泄漏有一定控制要求的应用场景。
二 主要参数
- 电感值：47 μH ±20%
- 额定电流（Irms）：840 mA
- 饱和电流（Isat）：840 mA（在规定磁通密度下降前）
- 直流电阻（DCR）：≈680 mΩ
- 类型：磁胶屏蔽电感（屏蔽结构）
- 封装形式：SMD，封装尺寸约 5×5 mm
- 品牌：cjiang（长江微电）
- 型号：FNR5020S470MT
三 结构与材料
该电感采用磁胶（磁粉或复合铁氧体胶粘）绕线与屏蔽结构，既保证一定的磁通闭合以降低磁泄漏，又通过合理的绕组与芯材选择在有限尺寸内实现较大的电感量。SMD 封装利于自动贴片与回流焊工艺。
四 主要特性与优势
- 小型化：5×5 mm 封装在板级功率滤波中占用空间小，适合高密度布局。
- 屏蔽性好：磁胶屏蔽结构能有效抑制磁泄漏，对邻近元件干扰较小。
- 稳定的电气性能：47 μH 的电感值配合 840 mA 的额定与饱和电流，适用于中低电流的滤波与储能场景。
- 可回流焊兼容：适用于主流 SMT 制程，便于批量制造与装配。
五 典型应用
- 开关电源输入/输出滤波（中低功率 DC–DC）
- 电源管理模块的共模/差模滤波（根据电路拓扑选择）
- 工业控制、消费电子、通信设备中的电源滤波与去耦
- 抗干扰设计中对磁干扰敏感区域的局部抑制
六 选型建议与注意事项
- 电流裕量：额定电流与饱和电流均为840 mA，应用中应预留裕量，避免长期在额定值附近工作以防温升与磁饱和。
- DCR 考虑：直流电阻约680 mΩ，会带来功耗与压降，设计电流与效率时需考虑该损耗。
- 温度与频率特性：实际电感随温度与绕组频率会变化，关键电路应在目标工作温度与频段下进行仿真或实测。
- 布局：靠近热源或高电流走线布置时注意散热与机械应力，尽量短而粗的走线连接以降低附加寄生阻抗。
七 封装与可靠性
FNR5020S470MT 适配常规 SMD 贴片与回流焊流程。建议遵循元器件厂家的焊接温度与回流曲线（避免长时间高温），板面焊盘需保证良好焊点并避免在焊接后对器件施加机械冲击。长期可靠性受温升、过电流与环境湿度影响，关键应用推荐做加速老化与热循环验证。
如需器件阻抗曲线、频率响应或回流曲线等更详细的电气与工艺资料，可联系长江微电获取官方数据手册与应用参考。
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