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cjiang FNR5040S3R0NT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR5040S3R0NT
- Type
- CJIANG
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR5040S3R0NT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±30%
- Electronic Component
- 0.579g
- Inductor
- 3uH
- Electronic Component
- 1
- Electronic Component
- BM0209237968
- Current
- 4A
- Resistor(DCR)
- 22mΩ
- 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.
FNR5040S3R0NT 产品概述
一、概述
FNR5040S3R0NT 是长江微电（cjiang）推出的一款 SMD 功率电感，额定电感值 3.0 µH，公差 ±30%。器件采用磁胶屏蔽结构，封装尺寸约 5×5 mm，面向中高频开关电源和各种功率滤波场合，兼顾体积、散热与低损耗的应用需求。
二、主要参数
- 电感值：3.0 µH ±30%
- 额定电流（Irated）：4.0 A（建议持续工作电流）
- 饱和电流（Isat）：4.6 A（达到该电流时电感量明显下降）
- 直流电阻（DCR）：约 22 mΩ（典型值）
- 类型：磁胶屏蔽电感（屏蔽化设计，减小漏磁）
- 封装：SMD，规格近似 5×5 mm
三、产品特点
- 低 DCR：22 mΩ 的低直流电阻有助于降低铜损，提高转换效率。
- 良好电流处理能力：4 A 额定电流适合中等功率点的 DC-DC 降压/升压模块。
- 明确饱和点：Isat 4.6 A，便于设计时留有裕量，避免工作在饱和区。
- 磁胶屏蔽：屏蔽结构抑制漏磁和电磁干扰（EMI），有利于邻近敏感电路的干扰控制。
- SMD 封装：适配自动贴装与回流焊工艺，利于批量生产。
四、典型应用场景
- 开关电源（buck/boost）输出滤波、电感储能元件
- 电源管理模块（PMIC）、点对点电源供电（VRM）
- LED 驱动、电池供电设备和便携式消费电子
- 通信设备与工业控制中对体积和效率有要求的电源子系统
五、使用建议与注意事项
- 电流留裕量：建议连续工作电流低于额定 4 A，避免长期接近 Isat（4.6 A），以维持稳定电感值与低损耗。
- 热设计：用 Pcu≈I²·DCR 估算铜损，例如在 4 A 时铜损约 0.352 W，需注意器件及 PCB 散热。
- 布局建议：进出电感端应尽量缩短高电流回路，地平面完整以利散热与抑制 EMI。
- 测试验证：在目标电路和工作温度下验证电感值、温升与效率，关注饱和特性与高频损耗。
- 回流焊工艺：遵循供应商建议的回流曲线，避免过高峰值温度影响性能。
六、可靠性与包装
- SMD 卷带（Tape & Reel）为常见供货形式，便于 SMT 生产线使用。
- 典型寿命与可靠性取决于回流焊、工作温度和电流应力，设计时建议参照厂家可靠性数据并做加速测试。
七、选型参考
在选用时，若系统要求更小体积或更低 DCR，应比较同类 5×5mm 尺寸或更大体积的电感件；若需更高电流能力，应优先选择 Isat 与额定电流更高的器件。最终选型以目标频率、允许纹波电流、温升和 EMI 要求为准，并通过样片验证电路实际表现。
如需更详细的温度特性、频率响应（L‑f）、的饱和曲线和封装尺寸图，请参考厂方数据手册或联系供货商获取完整资料。
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