WMSIC Electronic Components

DOWO ESD5451N

ModelESD5451N
PackageDFN1006-2
BrandDOWO
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
DOWO ESD5451N
Type
DOWO
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
ESD5451N
Electronic Component
1
Package
DFN1006-2
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.01g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
15pF
Electronic Component
BM0230826996
Operating Temperature
55℃~+125℃
Voltage
9V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2

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

ESD5451N 产品概述

ESD5451N 是 DOWO(东沃)推出的一款小型双向瞬态电压抑制器(TVS)二极管,专为保护低电压敏感线路免受静电放电(ESD)与浪涌冲击而设计。器件采用超小型 DFN1006-2 封装,单路双向保护,兼顾高能量吸收能力与低漏电、低结电容特性,适合消费电子、通信和工业控制等需要高密度布局与可靠防护的场合。

一、产品简介

ESD5451N 为双向 TVS 器件,在正反向瞬态脉冲时均能快速钳位,保护被保护节点不被过电压损坏。器件的反向截止电压(Vrwm)为 5V,击穿电压约 6V,典型钳位电压为 9V,能够在常见 5V 及更低电压系统中提供有效的浪涌与静电防护。产品通过 IEC 61000-4-2(静电放电)与 IEC 61000-4-5(浪涌)标准的防护要求,适配工业级工作温度范围。

二、主要技术参数

  • 极性:双向(Bi-directional)
  • 工作电压 Vrwm:5 V(反向截止)
  • 击穿电压:6 V(典型)
  • 钳位电压(Vclamp):9 V(在指定脉冲条件下)
  • 峰值脉冲电流 Ipp:8 A
  • 峰值脉冲功率 Ppp:100 W(单次脉冲能量吸收能力)
  • 反向电流 Ir:500 nA(常温下,低漏电流)
  • 结电容 Cj:15 pF(典型值)
  • 通道数:单路
  • 封装:DFN1006-2(超小型 SMD)
  • 工作温度范围:-55 ℃ ~ +125 ℃
  • 防护等级:符合 IEC 61000-4-2、IEC 61000-4-5
  • 类型:ESD/浪涌保护器件

三、主要特性与优势

  • 小体积高集成:DFN1006-2 超小封装,便于高密度 PCB 布局与便携设备应用。
  • 双向保护:支持正负两极瞬态抑制,适用于双向信号线或需双极性保护的系统。
  • 良好能量吸收能力:100 W 峰值脉冲功率与 8 A 峰值脉冲电流,可承受典型的浪涌及静电冲击。
  • 低漏电流:500 nA 的低反向电流,适合低功耗与电池供电系统,减少待机损耗。
  • 适中结电容:约 15 pF 的结电容在多数数据信号应用中可接受,对一般信号完整性影响有限,但在超高速接口中仍需评估。
  • 宽温区可靠运行:-55 ℃ ~ +125 ℃,满足工业级温度要求。

四、典型应用场景

  • USB、串口、低压数据线的静电与浪涌保护(在评估结电容影响后适用)
  • 智能终端、穿戴设备及便携式电子产品的接口保护
  • 工业控制接口、传感器信号线保护
  • 通信设备、网络终端的防护前端(需注意带宽与结电容匹配)
  • 电源线瞬态抑制(在 5 V 或更低工作电压的系统中)

五、封装与 PCB 布局建议

  • 尽量将器件靠近被保护的外部接口或连接器放置,减少未保护导线长度,以降低耦合入敏感器件的能量。
  • 对地连接应使用短且低阻抗的返回路径,若可能在保护器附近布置地平面或接地面,提升放电回路的能力。
  • 对高速信号线应用,需评估 Cj = 15 pF 对信号完整性的影响;若带宽要求较高,可配合串联阻抗或滤波元件优化信号质量。
  • DFN1006-2 封装需注意焊盘和焊接工艺,确保良好焊接可靠性与热散能力。遵循厂商推荐的焊盘尺寸与回流曲线。

六、可靠性与环境适应性

  • 器件设计适应宽温工作范围并能通过 IEC 61000-4-2(ESD)与 IEC 61000-4-5(浪涌)测试要求,具有良好的抗干扰与抗冲击能力。
  • 低漏电与稳定的击穿/钳位特性保证在长期工作中对系统性能影响较小。
  • 建议在设计验证阶段做针对性实验(如板级 ESD 测试、系统级浪涌测试),以确认在实际应用条件下的保护效果与可靠性。

七、选型与使用建议

  • 若目标保护线为 5 V 或更低电压系统,且需要双向保护,ESD5451N 是一个体积小、性能平衡的选择。
  • 对于超高速(多百兆赫兹或更高速率)信号线,请在选用前评估 15 pF 结电容对信号的影响,必要时采用低容抗干扰方案或选择更低 Cj 的器件。
  • 在多级防护设计中,ESD5451N 可作为靠近接口的第一道防线,配合后端稳压与滤波电路构建更鲁棒的保护体系。

如需器件的详细电气特性曲线、封装尺寸图或推荐的 PCB 焊盘样式,可提供需求,我将进一步提供对应资料与布局范例。

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