WMSIC Electronic Components

TDK MLF1005GR82KT000

ModelMLF1005GR82KT000
Package0402
BrandTDK
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+

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Technical data

Product details

20 specifications

Core information

Product name
TDK MLF1005GR82KT000
Type
TDK
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
TDK
Electronic Component
MLF1005GR82KT000
Electronic Component
1
Package
0402
Electronic Component
SMD Inductor
Electronic Component
±10%
Electronic Component
0.012g
Inductor
820nH
Electronic Component
1
Factor
30@10MHz
Electronic Component
BM0254021895
Current
40mA
Frequency
130MHz
Resistor(DCR)
430mΩ

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

MLF1005GR82KT000 产品概述 — TDK 0402 贴片电感(820 nH ±10%)

一、产品概况

MLF1005GR82KT000 是 TDK 面向微型高频应用的贴片电感,封装为 0402(国际码 1005),标称电感值 820 nH,公差 ±10%。额定直流电流 40 mA,直流电阻(DCR)约 430 mΩ,品质因数 Q = 30(10 MHz),自谐振频率(SRF)约 130 MHz。适合空间受限且对高频性能有一定要求的移动终端、射频前端及 EMI 抑制场合。

二、关键电气参数与工程意义

  • 电感值:820 nH ±10% —— 用于构成小型滤波器、谐振回路或阻塞高频信号。
  • 额定电流:40 mA —— 建议在该电流范围内使用以避免电感值因磁偏置或温升下降。
  • DCR:430 mΩ —— 直流损耗,对低频/直流路径的压降及功耗有直接影响。
  • Q = 30(10 MHz)与计算性说明:在 10 MHz 时,感抗 XL = 2πfL ≈ 51.5 Ω;由 Q = XL/ESR 可估算有效串联电阻 ESR ≈ 1.72 Ω(此值高于室温 DCR,说明在高频存在额外损耗如磁滞和涡流损耗)。
  • SRF = 130 MHz —— 在此频率以上电感呈现容性行为,使用时应保证工作频率远低于 SRF。常见工程经验是将工作频率控制在 SRF 的约 1/3 范围内,以保持稳定的电感特性(即建议在 ≲40–45 MHz 范围内为佳,具体视电路要求而定)。

三、典型应用场景

  • 射频前端的小型谐振元件与匹配网络(低电流信号路径)。
  • EMI/RFI 抑制:作为共模或差模抑制元件与陶瓷电容配合形成 PI/Li 型滤波器。
  • 小功率偏置滤波或信号线去耦,特别在空间受限的微模块上。
    注意:由于 DCR 与频率相关损耗较大,不推荐用于要求极低串联损耗的大电流电源滤波场合。

四、布局与焊接注意事项

  • 推荐按制造商的 PCB 芯片封装着陆尺寸(1005/0402)设计焊盘,避免过大或过小导致焊接可靠性问题。
  • 采用常规回流焊工艺,遵循 TDK 推荐的回流温度曲线与预热/冷却速率,避免过热引起温度应力或性能漂移。
  • 插装后避免在器件上直接施加机械压力(如探针、夹具),0402 尺寸器件脆弱且易受应力影响。

五、选型与测试建议

  • 在电路仿真或原型中,建议用 LCR 表在目标频率(如 10 MHz)测量电感与 Q,并在有直流偏置的条件下测量电感值以评估偏置下的衰减。
  • 若应用频率接近 SRF,应考虑选用更大尺寸或更高 SRF 的器件。
  • 关注温升与长期可靠性,在高温或连续大电流环境下进行加速老化测试以确认稳定性。
  • 关于合规性:TDK 常规产品符合无铅/ RoHS 要求,但最终合规信息请参考最新规格书与供应商证明文件。

总结:MLF1005GR82KT000 以其微小体积和在低至中频段良好的 Q 值,适合用于对尺寸敏感且需要中频滤波或匹配的电子系统。设计时应重视 DCR、频率损耗与自谐振约束,做好直流偏置与温度下的性能验证。若需更高电流或更低损耗,请考虑更大封装或不同材料体系的替代型号。

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