WMSIC Electronic Components

DOWO ESD5431N

ModelESD5431N
PackageDFN1006-2L
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO ESD5431N
Type
DOWO
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
ESD5431N
Electronic Component
1
Package
DFN1006-2L
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
Electronic Component
BM0231093706
Operating Temperature
55℃~+125℃
Voltage
10V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
200nA

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

ESD5431N 产品概述

一、产品简介

ESD5431N 是东沃(DOWO)推出的一款单路双向瞬态抑制二极管(ESD protection diode),采用小型 DFN1006-2L 封装,专为 3.3V 类低电压数据/信号线的静电放电(ESD)与雷击浪涌保护而设计。器件具有快速响应、低漏电和高脉冲能量吸收能力,适用于空间受限且对线路耐压和低漏电有严格要求的应用场景。

二、主要技术参数

  • 钳位电压(Vclamp):10 V(在规定脉冲条件下)
  • 工作温度范围:-55 ℃ ~ +125 ℃
  • 击穿电压(Vbr):5 V
  • 反向截止电压(Vrwm):3.3 V(建议工作电压)
  • 峰值脉冲功率(Ppp):110 W @ 8/20 µs 波形
  • 峰值脉冲电流(Ipp):11 A @ 8/20 µs 波形
  • 反向漏电流(Ir):≤ 200 nA(在 Vrwm 条件下)
  • 防护等级/符合标准:IEC 61000-4-5(雷击/浪涌)、IEC 61000-4-2(静电放电)
  • 通道数:单路;极性:双向;类型:ESD
  • 封装:DFN1006-2L(超小型表面贴装)

三、典型特性与优势

  • 双向保护:无需关注极性,适合双向数据线(如差分对或对地两端可能反向的信号)。
  • 低漏电流:在 3.3V 工作点下漏电 ≤200 nA,适合对静态功耗敏感的系统(如便携设备、传感器接口)。
  • 高脉冲吸收能力:110 W/8/20 µs 和 11 A 的峰值脉冲电流能力,可应对常见的雷击感应脉冲与线路浪涌。
  • 小体积封装:DFN1006-2L 极大节省 PCB 面积,利于高密度设计。
  • 宽工作温度范围:-55 ℃ 到 +125 ℃,适合工业级应用环境。

四、典型应用场景

  • MCU/FPGA 的 GPIO、UART、I2C、SPI 等 3.3V 信号保护。
  • 手机、平板、便携式设备外部接口保护(尤其空间受限场合)。
  • 工业控制器、传感器接口、通信模块的静电与浪涌防护。
  • 串行总线、同轴/差分信号的局部保护元件(根据线路电压和容差选型)。

五、PCB 布局与使用建议

  • 尽量将器件靠近连接器或外部引脚放置,缩短信号回路,减少走线电感和回路面积。
  • 对于需要参考地的设计,确保稳固且低阻抗的接地回路,使用一条短而粗的回流路径或靠近地平面的接地过孔。
  • 在可能的情况下,避免在保护器件和被保护器件之间加入过多串联阻抗(除非用于限制浪涌能量),以免影响钳位效果。
  • 焊盘和锡量应按厂商推荐的 DFN1006-2L 焊盘布局制作,保证可靠的焊接及热散能力。

六、可靠性与合规性

ESD5431N 按 IEC 61000-4-2 与 IEC 61000-4-5 的抗扰度要求设计,可显著提高终端设备对静电放电和浪涌事件的鲁棒性。器件工作温度宽,适用于汽车电子以外的一般工业/民用场合(如需用于汽车系统请咨询供应商)。

七、注意事项与选型建议

  • 确认系统的最大工作电压不超过 Vrwm(3.3 V),以避免器件在正常工作时进入击穿区。
  • 根据被保护器件能承受的峰值电压选择合适的钳位电压(此器件钳位约 10 V);若被保护器件对浪涌后的瞬态电压更敏感,需考虑更低钳位值的器件或增加系列阻抗。
  • 在高能量浪涌应用中,应同时评估器件能量耗散能力和整体保护方案(如配合温熔断器、气体放电管等)。
  • 若需详细封装尺寸、焊盘推荐和典型电气特性曲线,请向东沃(DOWO)获取官方器件数据手册和应用说明。

总结:ESD5431N 提供在 3.3V 系统中体积小、漏电低且具备良好脉冲吸收能力的双向 ESD 保护方案,适用于各种需要局部静电与浪涌保护的紧凑型电子产品。若有具体电路或应用场景,可提供更详细的选型与布局建议。

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