Model & package intelligence
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Taiwan Lu Hai SL0420-4R7M SL0420
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SL0420-4R7M
- Type
- Taiwan Luhai
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- SL0420-4R7M
- Electronic Component
- 1
- Package
- SMD,4.5x4.1mm
- Electronic Component
- SMD Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.241g
- Inductor
- 4.7uH
- Electronic Component
- 1
- Electronic Component
- BM0264398960
- Current
- 3A
- Resistor(DCR)
- 105mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- and Current(Isat)
- 3.5A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SL0420-4R7M — 4.7µH 一体成型贴片合金电感 产品概述
一、产品简介
SL0420-4R7M 是台湾陆海（LuHai）出品的一款一体成型贴片合金电感，标称电感值为 4.7µH，公差 ±20%。器件采用 SMD 结构，封装尺寸 4.5 × 4.1 mm，适配自动贴装与回流焊工艺，面向开关电源滤波、电流滤波与电源模块去耦等应用场景。
二、主要电气参数
- 电感值：4.7 µH（±20%）
- 额定电流（Ir）：3.0 A
- 饱和电流（Isat）：3.5 A（在该电流下电感开始明显下降）
- 直流电阻（DCR）：105 mΩ
- 封装形式：SMD，尺寸 4.5 × 4.1 mm
三、结构与材料特点
产品采用一体成型工艺和合金磁芯设计，具有良好的机械强度与尺寸稳定性。一体成型结构减少绕线松动、提高可靠性，适合振动与热循环环境下的长期可靠工作。封装紧凑，便于高密度 PCB 布局。
四、性能优势
- 高额定电流：3A 的额定电流满足中低功率开关电源、同步降压模块等常见需求；饱和电流 3.5A 提供一定的动态裕量。
- 合金磁芯：在相同体积下能够提供稳定的磁性能与较低漏磁，利于降低干扰。
- 自动贴装友好：SMD 封装配合卷带包装（适配 SMT）可提高生产效率与可靠性。
- 可预测的损耗：105 mΩ 的 DCR 值便于工程师估算铜损与温升，方便热设计与效率评估。
五、典型应用
- 开关电源（DC-DC）输入/输出滤波
- 降压/升压模块的电感元件
- 电源去耦与噪声抑制
- 通信设备、消费电子与工业控制等需要中等电流滤波的场合
六、使用建议与注意事项
- 电流选型：建议工作电流低于额定电流 80% 以降低温升并延长寿命；在脉冲条件下注意峰值电流不要超过饱和电流。
- 热管理：DCR 引起的功耗按 P = I^2·DCR 计算，必要时在 PCB 上增加散热面积或铜箔厚度，避免长期过热。
- 布局建议：电感应尽量放置在开关器件与负载之间，靠近开关管或稳压器输入/输出端以减小回路面积并优化 EMI 性能。
- 焊接与存储：按照通用 SMD 回流工艺和厂商建议的焊接规范执行，避免潮湿环境长期存放以防焊接缺陷。
七、包装与支持
SL0420-4R7M 通常以卷带（reel）形式供货，兼容自动贴片生产线。台湾陆海提供产品规格图与电气特性曲线，订购或批量设计时建议向供应商获取详细数据表与样品以进行实际测量验证。
如需针对特定应用的电流/温升评估或与替代型号的对比建议，可提供应用条件（工作电流、工作温度与开关频率）以便给出更具体的选型与布局优化建议。
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