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Sunlord SPH4018H220MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Sunlord SPH4018H220MT
- Type
- SUNLORD
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SUNLORD
- Electronic Component
- SPH4018H220MT
- Electronic Component
- 1
- Package
- SMD
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.008g
- Inductor
- 22uH
- Electronic Component
- 1
- Electronic Component
- BM0257715526
- Current
- 700mA
- Resistor(DCR)
- 348mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- and Current(Isat)
- 900mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SPH4018H220MT 产品概述
一、产品简介
SPH4018H220MT 为顺络（Sunlord）系列功率电感，标称电感值 22µH，公差 ±20%，设计用于表面贴装(SMD)电源滤波与能量储存场合。器件适配紧凑电路板布局，封装尺寸约 4×4 mm，兼顾小型化与较高电流承载能力，适合移动设备、电源模块和各类降压转换器的输入/输出滤波。
二、主要电气参数
- 电感值：22 µH ±20%
- 额定电流（Irms）：700 mA（建议连续工作参考值）
- 饱和电流（Isat）：900 mA（电感下降至初始值的指定百分比时）
- 直流电阻（DCR）：348 mΩ（典型值）
- 封装：SMD，4×4 mm
这些参数表明器件在中低电流、小功率开关电源中表现良好，但在接近饱和电流时电感量会显著下降，应留有裕量。
三、典型应用场景
- 升压/降压（DC-DC）转换器的电感储能元件
- 输出滤波与输入去耦，抑制开关噪声与纹波
- 移动终端、无线通信器件、便携式消费电子的电源管理
- 小型模块化电源、嵌入式系统电源子回路
四、选型与注意事项
- 电流裕量：实际设计应以最大纹波电流和瞬态电流为准，推荐选型时留出至少 20–30% 的裕度，避免长期工作在 Isat 附近导致电感下降与发热。
- 功率损耗与温升：DCR 为 348 mΩ，流过额定电流时会产生一定功率损耗（P = I^2·DCR），需评估电路的散热条件与温度对电阻、感值的影响。
- 频率响应：22 µH 在较高开关频率下会影响纹波与环路稳定性，必要时结合电容网络重新优化环路。
- 尺寸与布局：4×4 mm 的 SMD 尺寸便于自动贴装，焊盘设计和焊接工艺需匹配厂商推荐的封装图样。
五、布局与使用建议
- 尽量将电感置于开关节点或与开关器件近距离放置，减小环路面积以降低辐射与寄生干扰。
- 输入/输出电容应靠近电感及开关器件放置，低ESR电容可降低纹波与损耗。
- 对于高脉冲电流路径，采用宽铜迹和多层过孔加强散热与电流承载能力。
- 在靠近热源或高温区域时，应评估电感温升对 DCR 与磁芯特性的影响，必要时提升额定电流或改用更大规格器件。
六、小结
SPH4018H220MT 是一款面向中低功率电源设计的 SMD 功率电感，22 µH 的电感量配合 700 mA 的额定电流及 900 mA 的饱和电流，使其在便携设备与小型电源模块中具有良好的实用性。合理的选型裕量、良好的 PCB 布局与充分的散热设计是保证器件长期可靠工作的关键。若有更具体的电路参数或应用场景，可提供电路图以便给出更精确的选型与布局建议。
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