WMSIC Electronic Components

Sunlord SWPA5020S330MT

ModelSWPA5020S330MT
PackageSMD,5x5mm
BrandSUNLORD
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Sunlord SWPA5020S330MT
Type
SUNLORD
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
SWPA5020S330MT
Electronic Component
1
Package
SMD,5x5mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.008g
Inductor
33uH
Electronic Component
1
Electronic Component
BM0258491129
Current
900mA
Resistor(DCR)
507mΩ
Electronic Component
Electronic Component
Electronic Component
2500
and Current(Isat)
920mA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SWPA5020S330MT 产品概述

一、产品简介

SWPA5020S330MT 为顺络(Sunlord)推出的一款贴片功率电感,额定电感值 33 μH,公差 ±20%。器件采用 SMD 5×5 mm 封装,适合用于空间受限的电源滤波与能量储存场合。主要参数包括额定电流 900 mA、饱和电流 Isat 920 mA 与直流电阻(DCR)约 507 mΩ。

二、主要规格(关键数据)

  • 品牌:Sunlord(顺络)
  • 型号:SWPA5020S330MT
  • 电感值:33 μH ±20%
  • 额定电流(Irated):900 mA
  • 饱和电流(Isat):920 mA
  • 直流电阻(DCR):507 mΩ(0.507 Ω)
  • 封装:SMD,5 × 5 mm

三、性能要点与工程影响

  • 饱和裕量有限:Isat 仅略高于额定电流(920 mA vs 900 mA),在有较大纹波电流或短时峰值电流的应用中接近饱和,电感值可能显著下降。建议设计时留有裕量,避免工作电流接近 Isat。
  • 损耗与发热:较高的 DCR(0.507 Ω)会带来明显的 I^2·R 损耗。例如在 0.9 A 连续流过时,损耗约为 0.9^2×0.507 ≈ 0.41 W,会导致器件升温,需在热设计和散热预算中考虑。
  • 频率特性:33 μH 属于中等偏高电感,用于较低开关频率的降压转换器或 EMI 滤波更为合适;在高开关频率下体积及 DCR 可能带来效率下降。

四、典型应用场景

  • 低中功率降压(Buck)电源输出滤波与能量储存(便携设备、通信模块、传感器电源)
  • 输入滤波与电磁干扰(EMI)抑制
  • 工业控制与小功率电源模块的滤波元件

五、选型与设计建议

  • 电流裕度:若系统存在较大纹波或瞬态峰值电流,优先选择 Isat 明显高于峰值电流(建议 ≥1.2–1.5×峰值)的器件,否则可能导致磁饱和与性能退化。
  • 考虑功耗:依据实际平均电流计算 I^2·DCR 损耗并评估发热对周围元件与可靠性的影响;必要时选择更低 DCR 或更大封装的电感。
  • 布局注意:SMD 5×5mm 尺寸适合自动贴装,推荐遵循厂商推荐的 PCB land pattern 与走线,保证焊盘与散热良好。

六、焊接、存储与可靠性

  • 焊接:遵循顺络提供的回流温度曲线(或 IPC/JEDEC 标准回流规范),避免超温或长时间热应力;建议先行查看厂商数据手册获取精确回流参数。
  • 存储:遵守防潮等级与存储期限要求,长期储存或受潮需按厂商建议进行烘烤处理。
  • 可靠性:在高温、高振动或长期高电流工作下需做寿命评估,特别注意长期工作在高 I^2·R 损耗造成的热应力。

七、结论

SWPA5020S330MT 以其小型 SMD 5×5mm 封装和 33 μH 电感值,适合用于空间受限、低至中功率的电源滤波与能量储存场合。但其 DCR 较高且 Isat 与额定电流接近,设计时需重视电流裕度与热管理。选择前建议结合实际工作电流、纹波特性与效率要求,必要时咨询顺络官方数据手册以获取完整的频率特性曲线与回流工艺参数。

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