首款高电压微型GDT，可承受高达3kA@8/20μs浪涌

时间： 2019-07-03 来源：Littelfuse

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LITTELFUSE推出了首款带有两个方形端子的小型高压、表面贴装气体放电管（GDT），该产品在8/20μs条件下可承受高达3kA的浪涌电流。

CG4系列两端子高压微型气体放电管是专为高绝缘应用提供过压保护的高压（800V - 3000V）装置。该产品可保护人员、设备和电路免受雷击或电气瞬态引起的异常高压伤害。

CG4系列GDT的应用包括家电和白色家电，例如空调；工业系统，例如高压电源、变频驱动器和高压测试设备；医疗电子产品，例如NMR医疗设备和X光机；以及机顶盒等消费电子产品。

“CG4系列这类气体放电管能够通过内部的等离子气体消散电压瞬变。它们具有绝缘电阻高、电容和泄漏低的特性，可将对设备正常工作的影响降到最低。”Littelfuse GDT产品系列全球产品经理Stephen Li表示，“CG4系列是Littelfuse研发的首款高电压微型GDT，为需要表面贴装和中等抗浪涌能力的高电压应用提供了新的选择。”

CG4系列两端子高压微型气体放电管具有以下关键优势：
1）高（800V - 3000V）直流击穿电压可提供高压绝缘特性，适合需要耐压测试的应用。
2）外形小巧的表面安装设计适应了在空间有限的紧凑型应用中采用表面安装技术的趋势。方形端子有助于提高印刷电路板组装过程中的生产效率。
3）中等抗浪涌能力（8/20µs条件下达到3kA）为需要高达3kA浪涌保护的应用提供了全新的GDT选择，在设计上具有更大的灵活性。

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