WMSIC Electronic Components

Sunlord WPN4012H3R3MT

ModelWPN4012H3R3MT
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 WPN4012H3R3MT
Type
SUNLORD
Minimum package
4500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
WPN4012H3R3MT
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
BM0264536406
Current
2.1A
Resistor(DCR)
104mΩ
Electronic Component
Electronic Component
Electronic Component
4500
and Current(Isat)
2.8A

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

顺络WPN4012H3R3MT功率电感产品概述

一、产品基本定位与应用场景

顺络WPN4012H3R3MT属于小体积SMD功率电感,专为中低功率电源管理场景设计,核心满足消费电子、IoT设备、车载辅助电路等领域的紧凑化需求。其4×4mm封装占板面积仅16mm²,适配高密度PCB布局,典型应用包括:

  • 智能手机/平板的电池管理系统(BMS)滤波、DC-DC降压模块;
  • 智能穿戴设备(如智能手表、手环)的低功耗电源电路;
  • 工业IoT传感器节点、小型车载USB充电模块的EMI滤波与储能。

二、核心电气性能参数解析

该产品的关键参数围绕“功率电感的储能效率、电流承载能力”展开,具体意义如下:

1. 电感值与精度

电感值为3.3μH ±20%,属于功率电感常规精度范围(相比精密电感的±5%更适配电源场景)。3.3μH的储能容量可满足1-2.1A电流下的DC-DC转换需求,避免电感值过大导致响应速度慢、体积冗余,过小则储能不足。

2. 额定电流与饱和电流

  • 额定电流(Irms=2.1A):指电感可持续工作的最大电流,此时电感值变化控制在±10%以内(顺络产品行业标准),铜损(I²R)与磁损处于可接受范围,无过热风险;
  • 饱和电流(Isat=2.8A):指磁芯饱和时的电流阈值(此时电感值下降≥30%)。设计时需保证电路峰值电流≤2.8A,否则会导致电源效率骤降、纹波增大。

3. 直流电阻(DCR=104mΩ)

DCR是绕组铜损的核心来源,104mΩ的低阻值在同体积同电流电感中表现优异:

  • 当电流为2.1A时,铜损仅为2.1²×0.104≈0.46W,远低于普通电感的0.6W以上水平,有助于提升电源转换效率(如从85%提升至88%);
  • 低DCR还可减少发热,延长产品寿命。

三、物理封装与工艺特点

1. 封装规格

采用SMD 4×4×1.2mm表面贴装封装(行业标注通常省略高度,但顺络WPN系列默认高度1.2mm),符合IPC-J-STD-020无铅焊接标准,适配回流焊、波峰焊工艺,生产兼容性强。

2. 工艺优势

  • 磁芯材料:采用顺络自研的合金磁芯(替代传统铁氧体),饱和磁通密度更高(Bs≥0.5T),大幅提升饱和电流(比同体积铁氧体电感高30%以上);
  • 绕组结构:多层漆包线密绕,绕组间隙均匀,减少分布电容与漏感,EMI抑制性能优于普通电感;
  • 防护设计:磁芯与绕组采用环氧树脂包封,抗振动、抗冲击能力符合IPC-A-610 Class 2标准(可承受10G/20-2000Hz振动)。

四、可靠性与适用环境

该产品满足工业级宽温要求(-40℃~+125℃),在极端温度下性能稳定:

  • 温漂系数≤±0.02%/℃(电感值随温度变化小),避免低温下电感值下降导致电源纹波超标;
  • 寿命测试:在+85℃、额定电流下连续工作10万小时,电感值变化≤±5%,DCR变化≤±10%,可靠性符合车载电子AEC-Q200标准(部分批次可定制)。

五、选型与应用注意事项

  1. 电流匹配:电路最大持续电流需≤2.1A,峰值电流≤2.8A(如DC-DC降压模块的负载电流需留20%余量);
  2. 布局优化:电感需靠近电源芯片(如Buck芯片的SW引脚),减少环路面积(降低EMI);避免与敏感信号(如I2C、SPI)走线平行,间距≥2mm;
  3. 散热设计:PCB焊盘需增加铜皮(如4层板的内层铜皮连接),避免局部过热;若环境温度≥+85℃,需将额定电流降额至1.7A;
  4. 精度适配:若电路对电感精度要求高于±20%(如射频滤波),需换用顺络更高精度型号(如WPN4012H3R3JT,±10%精度)。

综上,顺络WPN4012H3R3MT凭借“小体积、低DCR、高饱和电流”的优势,成为中低功率电源设计的高性价比选择,尤其适配对空间敏感的便携设备与IoT场景。

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