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cjiang FNR4030S180MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4030S180MT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4030S180MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.338g
- Inductor
- 18uH
- Electronic Component
- 1
- Electronic Component
- BM0264590576
- Current
- 1.2A
- Resistor(DCR)
- 260mΩ
- 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.
FNR4030S180MT 产品概述
一、主要性能与规格
FNR4030S180MT 为长江微电（cjiang）推出的一款功率型磁屏蔽贴片电感，主要参数如下：
- 电感值：18 μH，公差 ±20%
- 额定电流（Ir）：1.2 A
- 饱和电流（Isat）：1.5 A（在此电流下电感值明显下降）
- 直流电阻（DCR）：约 260 mΩ
- 封装形式：SMD，外形尺寸约 4 × 4 mm
- 类型：磁胶/磁屏蔽功率电感，适合表面贴装工艺
二、产品特点
- 磁屏蔽结构可减小漏磁、抑制对周围电路的干扰，利于高密度板上布局。
- 额定电流 1.2 A、饱和电流 1.5 A，适用于中小功率降压转换与滤波场合。
- 较大的 DCR（≈260 mΩ）提示在额定电流下会有较明显的铜耗（I^2·R），需在效率与热量上权衡选择。
- 18 μH 的较高电感值适用于低开关频率或需要较大储能的电源环路。
三、典型应用
- DC-DC 降压转换器（中低频、1A 量级输出）
- 电源滤波（输入滤波、输出滤波、隔离噪声）
- LED 驱动、便携设备电源管理、工业控制电源模块等场景
四、使用与选型建议
- 对效率敏感的设计应关注 DCR 带来的 I^2R 损耗；若系统工作在接近额定电流，建议评估温升并考虑选择 DCR 更低的型号或并联方案。
- 为避免饱和引起的瞬态性能下降，工作电流应尽量低于 Isat，常规建议对额定电流进行适当降额（例如 70–80%），并根据实际纹波电流计算峰值。
- 电感公差 ±20% 表示实际电感值波动较大，若对精确电感值敏感，应在设计中预留容差或选用公差更窄的型号。
- 在开关电源中，电感应与整流元件、功率开关配合仿真，关注纹波电流与间歇应力。
五、封装与焊接注意
- 该器件为 SMD 贴片，常见以卷带（Tape & Reel）方式供货，便于自动贴片加工。
- 推荐按通用无铅回流焊工艺（遵循器件制造商的回流曲线）进行焊接，避免过冲高温和过长保温时间以防磁性材料性能退化。
- PCB 布局上应尽量缩短信号回路与电感之间的走线，必要时在电源回路处增加散热铜箔或热导孔以改善热耗散。
六、储存与可靠性提示
- 遵循常规电子元件储存规范，避免潮湿、高温、强磁场环境；若为潮湿敏感器件，请按制造商说明进行烘烤处理后贴装。
- 在关键应用（汽车、医疗等）建议向厂商索取完整的可靠性与环境测试报告，确认温度范围与寿命指标。
总结：FNR4030S180MT 是一款面向中小功率场景的磁屏蔽 SMD 功率电感，18 μH 的较大电感值适合低频储能与滤波，需注意其相对较高的 DCR 与电流降额，合理的 PCB 布局与热管理可保障可靠运行。若需最终电气与机械参数的完整数据，请参阅长江微电的正式数据手册或联系供应商获取。
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