WMSIC Electronic Components

Sunlord WPN4020H3R3MT

ModelWPN4020H3R3MT
PackageSMD,4x4mm
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Sunlord WPN4020H3R3MT
Type
SUNLORD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
WPN4020H3R3MT
Electronic Component
1
Package
SMD,4x4mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.008g
Inductor
3.3uH
Electronic Component
1
Electronic Component
BM0257364596
Current
3.45A
Resistor(DCR)
72mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
5.9A

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

WPN4020H3R3MT 产品概述

一、产品简介

WPN4020H3R3MT 为顺络(Sunlord)推出的一款表面贴装功率电感,封装尺寸为 4020(4.0×4.0 mm),标称电感值 3.3 μH(标称代码 3R3),公差 ±20%。该器件面向开关电源、点式电源滤波和电源变换器的能量存储与纹波抑制应用,兼顾体积、导流能力与热性能。

二、主要电气参数

  • 电感值:3.3 μH ±20%
  • 额定电流(Irated):3.45 A(连续工作时建议不超过此值以控制温升)
  • 饱和电流(Isat):5.9 A(在此电流下电感值降至指定比例,注意避免长期饱和)
  • 直流电阻(DCR):约 72 mΩ(影响功耗与效率)
  • 封装形式:SMD,4020(4×4 mm)

三、产品特点与优势

  • 大电流能力:额定电流 3.45 A,短时免饱和能力高达 5.9 A,适合中功率轨道使用。
  • 紧凑封装:4020 尺寸在保持较高电流能力的同时,有利于 PCB 布局密度优化。
  • 低 DCR:72 mΩ 的低直流电阻有助于降低铜损、提高转换效率并控制发热。
  • 稳定性设计:适用于高频开关应用,电感随直流偏置的衰减可控,利于设计裕量评估。

四、典型应用场景

  • 勒流与能量储存:降压(Buck)/ 升压(Boost)转换器中的输出滤波与储能元件。
  • 电源管理:笔记本、平板、便携式设备、通信设备的点式电源(POL)模块。
  • 工业与汽车电子(非安全关键路径):要求中等电流与耐用性的电源系统。

五、设计与使用注意事项

  • 直流偏置效应:在大电流工况下电感值会下降,应在实际 DC 偏置条件下验证电感满足滤波或能量存储需求。
  • 温升与散热:长期靠近额定电流工作会导致发热,建议保留热裕量或采用散热良好的 PCB 布局。
  • 布线建议:输入与输出回路尽量缩短、减小回路面积,靠近电感布置去耦电容,增加多孔过孔以利散热(如应用允许)。
  • 焊接工艺:按厂商推荐的回流曲线进行焊接,避免超温或长时间高温导致性能下降。
  • 余量使用:为保证长期可靠性,建议在持续工作时保留一定电流裕量(例如工作电流 ≤ 额定电流的 70–80%)。

六、选型与替代建议

选择时重点关注电感在大直流偏置下的有效电感值、DCR 对系统效率的影响以及封装是否满足 PCB 布局空间。若需要更高电流能力或更低 DCR,可优先考虑相近尺寸下更低 DCR 或更大截面的产品;若空间更受限,可查找小尺寸但在电流与损耗之间做权衡的型号。

七、质量与可靠性

作为商业级功率电感,WPN4020H3R3MT 适配主流电子制造工艺,可满足一般工业产品对温度循环、湿热及振动的可靠性要求。实际产品验证请参考顺络提供的详细数据手册与可靠性测试报告。

总结:WPN4020H3R3MT 在 4×4 mm 紧凑封装中提供 3.3 μH 的能量存储、3.45 A 的持续电流能力及较低的 DCR,适合中等功率开关电源与点式电源应用。在设计时应注意直流偏置、散热与焊接工艺以确保长期稳定工作。若需更详细的电气曲线、温升数据及封装图纸,请参考顺络官方数据手册或联系供应商获取样片验证。

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