WMSIC Electronic Components

PROD PSTMAA4030-220MB PSTMAA4030

ModelPSTMAA4030-220MB
PackageSMD,4.1x4.1mm
BrandPROD
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
PROD PSTMAA4030-220MB
Type
PROD
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PROD
Electronic Component
PSTMAA4030-220MB
Electronic Component
1
Package
SMD,4.1x4.1mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.476g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0257711557
Current
2.5A
Resistor(DCR)
220mΩ
Electronic Component
Electronic Component
Electronic Component
2000

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

PSTMAA4030-220MB 产品概述

一、产品简介

PSTMAA4030-220MB 是谱罗德(PROD)出品的一款扁平线一体成型贴片电感,标称电感值 22 µH(±20%),封装尺寸 4.1 × 4.1 mm,面向中低频电源滤波与储能场合。该器件额定电流 2.5 A,饱和电流(Isat)约 3.4 A,直流电阻(DCR)为 220 mΩ,适合表面贴装自动化生产。

二、主要特性

  • 电感值:22 µH,公差 ±20%
  • 额定电流:2.5 A(持续工作参考值)
  • 饱和电流(Isat):3.4 A(超过该电流电感值显著下降)
  • 直流电阻:220 mΩ(影响效率与发热)
  • 封装:SMD 4.1 × 4.1 mm,一体成型扁平线绕制,易于贴片生产
  • 品牌:PROD(谱罗德)

三、电气性能与热管理

  • 直流损耗计算:P_loss = I_rms^2 × DCR。按额定电流 2.5 A 计算,P_loss ≈ 2.5^2 × 0.22 ≈ 1.375 W,说明在持续满载条件下器件发热明显,必须做好散热和电流裕度设计。
  • 饱和特性:Isat = 3.4 A,为器件在高峰值电流情况下仍能保持一定储能能力的参考值;实际电感会随直流偏置下降,设计时需考虑直流偏置引起的有效电感下降。
  • 频率响应:适合中低频(例如开关频率从几十 kHz 到数百 kHz)的储能与滤波应用,高频下电感值及损耗会随频率变化,应参考实际测试曲线确定。

四、机械与封装注意事项

  • 封装尺寸 4.1 × 4.1 mm,贴片安装,建议采用常规卷带供料以配合 SMT 生产。
  • 回流焊工艺:遵循通用无铅回流温度曲线(JEDEC 推荐),避免超过器件热稳定极限。
  • PCB 布局:器件下方与周边宜布置散热铜箔与过孔,若在高功率场合建议增加热沉或多层铜层散热。焊盘设计应参考厂方推荐封装图以保证焊接质量。

五、典型应用场景

  • DC–DC 降压(Buck)电源的储能电感(中低开关频率场合)
  • 输入/输出滤波与纹波抑制(电源模块、功率滤波器)
  • LED 驱动电源、便携设备电源管理、工控与通信设备的局部电源模块

六、选型与使用建议

  • 留足电流裕度:建议工作电流低于额定电流以减少发热,必要时以 70–80% 的额定电流作为长期设计目标。
  • 考虑纹波电流:采用 P_loss = I_rms^2 × DCR 计算实际损耗,I_rms 取电感中交流分量与直流分量组合后的有效值。
  • 布局与散热:靠近开关管与电感放置时注意减小环路面积与寄生电感;在高功率应用增加散热铜箔、过孔。
  • 验证 DC 偏置效应:在目标应用电流下测量电感值,确认满足滤波与储能需求。
  • 如果对效率或温升要求严格,可选用 DCR 更低或体积更大的替代型号。

七、可靠性与测试建议

  • 建议在样机阶段进行温升、效率与纹波电流测试,确认在最大工作条件下电感温度在可接受范围内。
  • 做饱和和直流偏置测试,确认在短时峰值电流(如启动或短路情形)下电感不会过早失效。
  • 参考厂方提供的机械图纸与回流曲线,进行贴装与焊接工艺验证。

八、结论

PSTMAA4030-220MB 以其 22 µH 的电感值和一体成型扁平线结构,适用于中低频电源滤波与储能场景。设计时需重视较高的 DCR 带来的功耗与发热,合理选型与 PCB 散热设计能够保证稳定可靠的长期工作。若需更低损耗或更高电流能力,可联系供应商获取更详细的 EMC/频率特性曲线或推荐替代型号。

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