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cjiang FNR4030S331MT
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4030S331MT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4030S331MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.338g
- Inductor
- 330uH
- Electronic Component
- 1
- Electronic Component
- BM0264754150
- Current
- 260mA
- Resistor(DCR)
- 5.2Ω
- 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.
FNR4030S331MT 产品概述
一、产品简介
FNR4030S331MT 是长江微电（cjiang）推出的一款 SMD 磁胶屏蔽功率电感，封装尺寸为 4×4mm。标称电感值 330µH，公差 ±20%，面向体积受限、对磁干扰有一定防护要求的低功率滤波与储能场合设计。器件采用屏蔽结构，有助于降低对周围元件的磁干扰。
二、主要参数
- 电感值：330µH ±20%
- 额定电流（Irated）：260mA（在此电流下器件按额定规格工作）
- 饱和电流（Isat）：400mA（接近此电流时电感明显下降）
- 直流电阻（DCR）：5.2Ω（典型值，测量温度通常为 20°C）
- 类型：磁胶屏蔽电感（磁性胶体屏蔽）
- 封装：SMD，4×4mm
三、特点与优势
- 小型化：4×4mm 表面贴装，适合空间受限的设计。
- 屏蔽结构：磁胶屏蔽可降低外部磁场泄漏，利于与敏感元件并排布局。
- 低功率应用优化：额定电流和饱和电流适合小电流滤波、整流后抑制纹波等场合。
- 可靠性：SMD 形式适用于自动贴装与回流焊工艺。
四、典型应用
- DC-DC 降压/升压转换器中的输入/输出滤波（低电流档位）
- 电源噪声抑制与 EMI 滤波器
- 可穿戴设备、物联网终端、电池管理与便携式电子设备的电源滤波
- 模拟电路、传感器前端的低频杂散抑制
五、焊接与封装建议
- 推荐采用标准 SMD 回流焊工艺，遵循元件厂商或通用回流温度曲线。
- 焊盘设计应保证良好焊点，避免过小焊盘导致焊接不良。
- 存储与贴装前注意防潮处理，若长期暴露请参考湿敏等级和回流前的预烘烤要求（按制造商说明）。
六、布局与散热建议
- 该器件 DCR 值相对较高（5.2Ω），在额定电流下损耗不可忽视：按 P=I^2·R 估算，260mA 时约 0.35W；接近 400mA 时损耗约 0.83W。长期高电流工作会引起明显升温，建议在实际应用中做好热量评估和余量设计。
- 将电感尽量放置于靠近开关元件或输入/输出电容的位置，缩短信号回路面积以降低辐射与寄生感应。
- 如需通过大电流或连续高占空比工作，建议增加散热面积或选用更低 DCR 的型号。
七、选型与测试注意事项
- 若电路需要持续较高输出电流，应优先考虑 DCR 更低、Isat 更高的电感型号；FNR4030S331MT 更适合偏低电流的滤波与储能场景。
- 测试时注意测量温度对 DCR 的影响和电感随直流偏置变化的特性（在接近饱和电流时电感值会下降）。
- 在关键应用中建议采用实际 PCB 调试并记录温升与电感随电流变化的曲线。
八、订货信息
- 品牌：cjiang（长江微电）
- 型号：FNR4030S331MT
- 封装：SMD 4×4mm
- 在订购与大量应用前，可向供应商索取详细数据手册与回流焊工艺建议，以确保与项目工艺和可靠性需求匹配。
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