WMSIC Electronic Components

Sunlord SDMM0806F-2-900T SDMM0806F

ModelSDMM0806F-2-900T
PackageSMD-4P,0.9x0.7mm
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 SDMM0806F-2-900T
Type
SUNLORD
Minimum package
10000

Technical parameters

Electronic Component
SUNLORD
Electronic Component
SDMM0806F-2-900T
Electronic Component
1
Package
SMD-4P,0.9x0.7mm
Electronic Component
Common Mode Filter
Electronic Component
0.048g
Electronic Component
1
Channel Count
2
Electronic Component
BM0238878808
Operating Temperature
40℃~+85℃
Resistor
10MΩ
Voltage
5V
Current
100mA
@Frequency
90Ω@100MHz
Resistor(DCR)
4Ω
Electronic Component
10000

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

SDMM0806F-2-900T — 顺络 Sunlord 信号共模滤波器产品概述

一、产品简介

SDMM0806F-2-900T 为顺络(Sunlord)推出的小型贴片信号共模滤波器,针对高速差分/双线信号的电磁干扰(EMI)抑制与共模噪声抑制而设计。器件为双通道(2 通道)结构,采用 SMD-4P 封装,外形尺寸仅 0.9 × 0.7 mm,适合空间受限的移动终端、通讯模块及消费电子类电路板上做近端 EMI 抑制。

二、主要电气参数

  • 通道数:2(双通道)
  • 额定电流:100 mA(每通道)
  • 阻抗:90 Ω @ 100 MHz(典型共模阻抗)
  • 额定电压:5 V(DC)
  • 直流电阻(DCR):4 Ω(每通道)
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 绝缘电阻:≥ 10 MΩ

这些参数表明 SDMM0806F-2-900T 在 100 MHz 左右对共模干扰有较高的抑制能力,适用于 5V 及以下的信号链路;但直流电阻为 4 Ω,需在使用时考虑对信号幅值或偏置的影响。

三、产品特点与优势

  • 尺寸微小:0.9×0.7 mm SMD-4P 封装,便于在高密度 PCB 布局中节省空间。
  • 良好共模抑制:90 Ω @ 100 MHz 的共模阻抗,有助于降低 PCB 上的共模辐射与传导干扰。
  • 双通道配置:可同时滤除两对信号或作为差分对的两条线的共模滤波单元。
  • 宽温工作:支持 -40 ℃ 至 +85 ℃ 的商用或工业级环境温度范围。
  • 高绝缘性:≥10 MΩ 的绝缘电阻保证了端到端的绝缘性能,有利于可靠性与信号隔离。

四、典型应用场景

  • USB/OTG 数据线前端(需确认 DCR 与电流要求是否满足具体接口)
  • 串行通信接口(UART、I2C、SPI 辅助 EMI 抑制)
  • 无线通信模组与天线接口附近的干扰抑制
  • 摄像头、显示接口或差分信号线(做共模滤波以降低 EMI)
  • 移动设备、可穿戴设备、物联网节点等空间受限设备的 EMI 解决方案

五、设计与布局建议

  • 尽量将器件放置在干扰源(如连接器、芯片引脚)与 PCB 边缘或外部连线之间,靠近干扰进入/离开点安装以提高抑制效率。
  • 对差分信号使用时,确保滤波器前后的两条线长度和过孔对称,以避免差模不平衡。
  • 由于 DCR 为 4 Ω,应避免将该器件用于要求零电阻或高电流(>100 mA)的电源线;对信号偏置或模拟参考线需评估电压降影响。
  • 在滤波器两侧增加地平面并在必要位置使用地过孔(via)形成良好接地回流,减少共模耦合到其他信号层。
  • 焊接工艺遵循 SMT 常规回流焊规范;贴片时注意锡膏印刷与焊盘匹配,防止虚焊或桥连。

六、选型注意事项

  • 额定电流 100 mA 为器件允许通过的连续直流或有效值电流,若实际应用存在瞬时更高电流或长时间偏置,请进行裕量计算。
  • 直流电阻 4 Ω 在某些低电平或电压敏感信号(如某些模拟参考线)上可能造成影响,使用前请评估信号完整性与电平满足性。
  • 若系统工作频段或 EMI 问题集中在其他频率点,需确认本器件在目标频段的阻抗曲线是否满足要求;90 Ω@100MHz 为典型参考值。
  • 在高速差分总线(如 USB3.0、HDMI 等)使用前,需核实差模插入损耗与差模特性,以免影响高速信号传输。该器件更适合基频及中高频段的共模抑制场合。

七、结论

SDMM0806F-2-900T 是一款针对常见高速信号线进行共模干扰抑制的微型双通道滤波器,具有体积小、共模阻抗高、工作温度范围宽等优点。适用于对 PCB 板面空间有限且需改善 EMI 性能的消费电子与通信类产品。在设计时需注意直流电阻与额定电流对具体信号链的影响,并配合合理的 PCB 布局与接地策略以获得最佳滤波效果。若需更详细的阻抗频率曲线或可靠性数据,建议参考顺络官方数据手册或联系厂家技术支持。

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