# 分段共模扼流圈和雙線共模扼流圈的區別

**URL:** <https://forum.digikey.com/t/topic/34199>\
**Category:** 產品技術提示\
**Created:** [August 16, 2023, 6:53am UTC](https://forum.digikey.com/t/topic/34199 "2023-08-16T06:53:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kevin\_6462](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/kevin_6462/32/8856_2.png) [@Kevin\_6462](https://forum.digikey.com/u/Kevin_6462)\
**Post date:** [August 16, 2023, 6:53am UTC](https://forum.digikey.com/t/topic/34199/1 "2023-08-16T06:53:54Z")

</div>

分段共模扼流圈（Sectional Common Mode Choke）在結構和 EMC 應用用途方面與雙線共模扼流圈（Bifilar Common Mode Choke）不同。

 ![image](https://global.discourse-cdn.com/digikey/original/3X/5/9/59a31fd330e2ee12a2c82ff7594cb8793ea806c2.jpeg)

**雙線共模扼流圈屬性：**

- 差分阻抗更小
- 高電容耦合
- 低漏電感

**分段共模扼流圈屬性：**

- 低電容耦合
- 高漏電感

**雙線共模扼流圈 EMC 應用：**

- 數據線
- 感測器線
- USB
- HDMI

**分段共模扼流圈 EMC 應用：**

- 電源輸入 / 輸出濾波器
- 開關電源去耦

有關更多[共模扼流圈](https://www.digikey.tw/zh/products/filter/%E5%85%B1%E6%A8%A1%E6%89%BC%E6%B5%81%E5%9C%88/839)詳細資料和應用介紹，請參考 DigiKey 提供的線上研討會影片：

[Differences Between Sector and Bifilar Common Mode Chokes and When To Use Each One](https://www.digikey.tw/zh/videos/w/wurth/webinarpoweredbydigikeydifferencesbetweensectorandbifilarcommonmodechokesandwhentouseeachone)