Littelfuse推出业界最小采用紧凑型表面贴装封装的3kA TVS二极管

Release time:2025-09-23
author:AMEYA360
source:Littelfuse
reading:263

  Littelfuse宣布推出DFNAK3系列大功率TVS二极管。该系列紧凑型表面贴装器件可提供3kA (8/20µs) 浪涌电流保护,在极小空间内可提供最高的浪涌保护,非常适合在苛刻环境中保护直流供电系统和以太网供电 (PoE) 应用。

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DFNAK3系列TVS二极管

  与传统高浪涌TVS二极管笨重的轴向引线封装或大型表面贴装封装不同,DFNAK3系列采用紧凑型DFN封装,是目前市场上最小的3kA额定TVS二极管。所占面积比包覆型封装小70%,高度也比标准SMD型包覆型封装低70%,让空间受限的高密度PCB设计成为可能,而不会影响浪涌性能或系统稳定性。

  Littelfuse保护产品市场经理Jenny Chen表示:“DFNAK3系列使设计人员能够满足当今的小型化和性能需求。能够实现紧凑、高密度的系统设计,同时提供与大尺寸元件相同的高浪涌额定值,确保为PoE、远程无线电装置和数据中心电源等任务关键型应用提供稳定保护。”

  DFNAK3系列专为满足IEC 61000-4-5第4级要求设计,具有较低箝位电压和出色瞬态抑制能力,是标准TVS二极管、MOV和GDT的理想替代方案。表面贴装配置还支持经济高效的自动化PCB组装,降低了整体生产的复杂性。

  主要功能与特色

  · 3kA (8/20µs) 额定浪涌电流,适用于高可靠性直流和PoE系统;

  · 紧凑型DFN表面贴装封装可节省多达70%的PCB空间;

  · 箝位电压较低,可为敏感的下游电子元件提供出色的保护;

  · 击穿电压高于反向阻抗电压,确保可靠的直流线路和PoE保护;

  · 符合IEC 61000-4-5 (4级) 和其他浪涌保护标准。

  目标市场与应用

  · 小型基站、远程无线电单元 (RRU) 和基带单元 (BBU) 的直流总线保护;

  · 以太网供电 (PoE) 系统;

  · 人工智能基础设施和数据中心服务器中的直流电源;

  · 恶劣环境中运行的工业直流电源。

  DFNAK3系列秉持Littelfuse的使命,即提供创新的表面贴装保护解决方案,以满足客户对更小外形尺寸、更高性能的不断变化的需求。


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