WMSIC Electronic Components

muRata LQW15AN68NG00D

ModelLQW15AN68NG00D
Package0402
BrandmuRata
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 Date code within 2 years

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
mu Rata LQW15AN68NG00D
Type
MURATA
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
MURATA
Electronic Component
LQW15AN68NG00D
Electronic Component
1
Package
0402
Type
Display Inductor
Electronic Component
Power Inductor
Electronic Component
±2%
Electronic Component
0.015g
Inductor
68nH
Electronic Component
1
Electronic Component
BM0058417968
Current
140mA
Resistor(DCR)
1.96Ω
Electronic Component
Electronic Component

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

LQW15AN68NG00D 产品概述

一、产品简介

LQW15AN68NG00D 是村田(muRata)的一款0402 封装非屏蔽功率电感,标称电感值 68 nH,公差 ±2%,直流电阻 (DCR) 为 1.96 Ω,额定电流 140 mA。该器件体积小、适用于空间受限的表面贴装电路,常用于高频滤波、射频旁路或小功率开关电源及干扰抑制场合。

二、主要规格(基于提供参数)

  • 电感值:68 nH ±2%
  • 直流电阻(DCR):1.96 Ω
  • 额定电流:140 mA
  • 类型:非屏蔽(非遮蔽)电感
  • 封装:0402(1005 公制)
  • 品牌:muRata(村田)
    以上参数决定了器件在低频和高频下的损耗与热升高,使用时应综合考虑频率特性与电流容限。

三、结构与封装特点

0402 超小型封装适合高密度 PCB 设计,非屏蔽结构意味着磁通没有金属外壳隔离,体积更小但磁场泄漏相对较大。0402 工艺对贴装和回流温度敏感,建议按制造商回流曲线进行焊接,避免过度机械应力导致裂纹或性能漂移。

四、典型应用场景

  • 高频旁路与去耦(RF 前端、低电流模拟电路)
  • 小电流开关稳压器的输入/输出滤波(低功率模块)
  • EMI/EMC 抑制电路中的共模/差模滤波(与电容配合)
  • 高频谐振电路或阻抗匹配时作为小值电感使用

五、在电路设计中的注意事项

  1. DCR 较高:1.96 Ω 在 0402 电感中属于较大的直流电阻,通以额定电流 140 mA 时的功耗约为 P = I^2·R ≈ 0.14^2×1.96 ≈ 38 mW,长期运行会有热量产生,应评估系统散热和温升对电感特性的影响。
  2. 电流裕量:额定电流 140 mA 为器件可长期承载的不超过范围,若短时冲击电流或饱和电流(Isat)要求较高,应参考完整数据手册确认饱和特性与温度系数。
  3. 非屏蔽特性:放置时避免与敏感模拟信号线或高阻抗节点并行过近,以免磁耦合引起串扰。必要时在布局上留出间距或旋转芯片方向降低耦合。
  4. 频率响应与自谐频率(SRF):在所用工作频率附近应查看阻抗-频率特性曲线,68 nH 的有效阻抗会随频率上升后到达 SRF 并出现电容性效果,设计时注意避开异常频带。
  5. 焊接与可靠性:采用推荐的回流温度曲线,避免多次重流;贴装前后注意防潮与静电保护。

六、测试与可靠性验证

  • 建议进行实际电路下的温升测试、长期老化与热循环试验;
  • 在目标频段测量阻抗与相位以确认滤波效果;
  • 做开路/短路防护评估,检查在过流或瞬态条件下是否有磁饱和或参数不可逆变化。

七、选型与替代建议

若系统对直流损耗或额定电流有更高要求,可考虑同类封装中 DCR 更小、额定电流更高的型号,或者选用带屏蔽的微型电感以减少磁泄漏。最终选型应以完整的 Murata 技术规格书为准,特别是查看 Isat、Irms、频率响应曲线及温升数据,确保在目标应用工况下满足性能与寿命要求。

备注:本文基于提供的关键参数进行概述,实际设计与最终选型请参考厂商数据手册(Datasheet)与实验验证。

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