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cjiang FNR4030S1R8NT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4030S1R8NT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4030S1R8NT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±30%
- Electronic Component
- 0.338g
- Inductor
- 1.8uH
- Electronic Component
- 1
- Electronic Component
- BM0264590525
- Current
- 3.3A
- Resistor(DCR)
- 33mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNR4030S1R8NT 产品概述
一、产品基本参数
FNR4030S1R8NT 为长江微电（cjiang）系列功率型磁胶屏蔽电感，封装为 SMD（4×4 mm）。主要参数如下：电感值 1.8 µH（公差 ±30%）、额定电流 3.3 A、饱和电流 Isat 5.8 A、直流电阻 DCR 33 mΩ。该器件定位于中等功率开关电源和电源滤波场合，兼顾体积与导流能力。
二、主要性能特点
- 磁胶封装与屏蔽设计，漏磁小，有利于减小外围电磁干扰(EMI)；
- 支持 SMD 贴装，适配自动化装配与紧凑 PCB 布局；
- 较高的 Isat（5.8 A）保证瞬态或冲击电流下电感值不易急剧下降；
- DCR 33 mΩ 在 3.3 A 连续工作时，损耗约 I^2·R ≈ 0.36 W，需考虑散热与版面热阻。
三、电气与热性能说明
- 电感公差 ±30% 说明实际工作电感可能有较大偏差，适用于对电感值容忍度较高的转换器拓扑（如降压型 DC-DC）。
- 额定电流为在允许温升下的连续电流，建议在高温或受限散热环境下适度降额使用；
- 饱和电流表示电感在该电流下会显著降低电感量，应避免长期在接近 Isat 的工作点；
- DCR 导致的铜损是热源主要部分，PCB 布局（加宽铜箔或采用散热层）可降低温升。
四、典型应用场景
适用于降压（buck）转换器、电源管理模块（PMIC）、嵌入式系统电源、便携设备及工业板级电源滤波等中等功率场合，特别是对体积和 EMI 有较高要求的设计。
五、选型建议与注意事项
- 若电源峰值或启动电流较大，应以 Isat 为依据选择，确保瞬态不过饱和；
- 对输出纹波与稳态电流有严格要求的设计，应考虑选择更低公差或更低 DCR 的型号；
- 布线建议将电感尽量靠近开关器件与电容，缩短回流路径；必要时增加散热铜箔或过孔改善热散逸；
- 焊接遵循厂家回流曲线，避免过压或长时间高温影响磁性材料特性。
六、封装与采购信息
产品为 SMD 封装，适配自动贴片与卷带供料。具体订购型号为 FNR4030S1R8NT（长江微电），采购时请核对批次测试报告和推荐回流参数，以保证一致性与长期可靠性。
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