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cjiang FNR4020S330MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4020S330MT
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4020S330MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.245g
- Inductor
- 33uH
- Electronic Component
- 1
- Electronic Component
- BM0265018925
- Current
- 680mA
- Resistor(DCR)
- 715mΩ
- 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.
FNR4020S330MT 产品概述
一、产品简介
FNR4020S330MT 是长江微电（cjiang）推出的一款磁胶屏蔽功率电感，封装为 SMD，外形尺寸约 4×4 mm，额定电感值 33 μH（允许偏差 ±20%）。该器件专为中低功率开关电源、电源滤波与电能存储应用设计，具有良好的电流承载能力和饱和特性，适合在空间受限的移动设备与工业电子产品中使用。
二、主要电气参数
- 电感值：33 μH ±20%
- 额定电流（Irated）：680 mA（连续工作推荐值）
- 饱和电流（Isat）：930 mA（电感下降至指定百分比时的电流上限）
- 直流电阻（DCR）：715 mΩ（典型）
- 封装形式：SMD，尺寸约 4×4 mm
- 类型：磁胶屏蔽功率电感
三、产品特点与优势
- 体积小、功率密度高：4×4 mm 封装在有限空间内提供较高电感值，适用于紧凑布局。
- 良好抗饱和性能：Isat 达到 930 mA，在高峰值电流条件下仍能保持稳定工作。
- 屏蔽结构：磁胶屏蔽设计降低对周围元件的磁干扰，利于系统电磁兼容（EMC）布局。
- 可回流焊工艺兼容：SMD 形式适合自动化贴装与回流焊流程，便于批量生产。
四、典型应用场景
- 降压（Buck）/ 升压（Boost）DC-DC 转换器的能量储存元件
- 电源输入滤波与输出去耦，抑制开关噪声与纹波
- 移动设备电源管理模块（如便携式终端、可穿戴设备）
- 工业控制、仪器仪表及通信设备的中低功率电源通路
五、设计注意事项
- 电流选择：额定电流 680 mA 为连续工作条件下的推荐值；若电路存在较大脉冲或峰值电流，建议以 Isat（930 mA）为硬限制并留有裕量，避免进入明显饱和区。
- 功率损耗与发热：DCR 为 715 mΩ，会带来 I^2R 损耗；在接近额定电流时注意器件温升，必要时进行散热与热仿真评估。
- PCB 布局：减少电感引脚到开关器件的回流路径长度，使用宽铜线与充足的过孔连接地/电源平面，以降低串联阻抗与EMI。
- 电磁兼容：尽管为屏蔽结构，关键噪声源仍应按常规布置，保持高频回路尺寸最小化并配置适当的旁路电容。
六、试验与可靠性建议
- 在目标应用中进行温升测试与长期热循环试验，以确认在工作温度范围内电感值与 DCR 的稳定性。
- 做直流偏置和大信号测试，观察电感随直流电流变化的特性曲线，评估在实际工况下的有效电感。
- 建议按制造商提供的回流焊温度曲线进行焊接，避免超温导致磁芯或粘接材料性能退化。
七、采购与替代
FNR4020S330MT 适合需要 33 μH、约 700 mA 级别电流能力的设计。如需替代器件，注意匹配电感值、DCR、Isat 以及封装尺寸和屏蔽特性，以保证电路性能不受影响。可向长江微电或授权分销商获取器件样片与更多具体数据表以便验证。
若需我汇总为 BOM 条目、给出建议封装库封装或提供 PCB 布局示意，可继续说明具体设计要求与工作条件。
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