WMSIC Electronic Components

DOWO PESD2ETH1G

ModelPESD2ETH1G
PackageSOT-23
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 PESD2ETH1G
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
PESD2ETH1G
Electronic Component
1
Package
SOT-23
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.036g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.95pF
Electronic Component
BM0264342817
Voltage
29.5V;32.5V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
100nA

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

PESD2ETH1G 产品概述

PESD2ETH1G 是东沃(DOWO)推出的一款面向千兆以太网接口的双路双向ESD保护器件,封装为SOT-23,专为在高带宽数据链路上提供可靠的静电和脉冲浪涌保护而设计。器件在保证极低结电容的同时,兼顾了较高的脉冲能量吸收能力,适合靠近RJ45接口或收发器芯片引脚处布置,保护以太网差分对和敏感接口不受静电放电与快速瞬变的损害。

一、主要性能亮点

  • 极性:双向(支持正负极性瞬态冲击)
  • 反向截止电压 Vrwm:24 V(适用于24V等级接口保护)
  • 钳位电压:典型/等级值 29.5 V;32.5 V(在指定测试条件下给出)
  • 峰值脉冲功率:40 W @ 8/20 μs(Ppp)
  • 标称峰值脉冲电流(IPP):16 A(器件在特定浪涌条件下的脉冲电流能力,详见数据手册)
  • 反向漏电流 Ir:100 nA(低漏电,适合不干扰高阻抗电路)
  • 每通道结电容 Cj:≈0.95 pF(超低电容,利于保持信号完整性,适合1Gb/s以太网)
  • 通道数:双路(可同时保护两条信号线或一对差分线)
  • 防护等级:满足 IEC 61000-4-2(ESD)与 IEC 61000-4-4(EFT)相关测试要求
  • 封装:SOT-23(小型化、易于贴片工艺)

二、典型应用场景

  • 千兆以太网(1000Base-T)接口保护,靠近RJ45接口或PHY芯片放置
  • 工业以太网(需要抗干扰、抗静电的通信接口)
  • 通讯设备、交换机端口、电信终端、嵌入式网络模块的接口保护
  • 其他需要低电容、高速信号兼容的差分线防护场合

三、使用与布局建议

  • 器件应尽可能靠近RJ45连接器或受保护器件的引脚放置,以缩短传输路径,降低线圈电感带来的尖峰。
  • 对地平面/接地层应有良好连接,保护回路的回流路径尽量短且阻抗低,以提高能量吸收效率。
  • 在SOT-23引脚到接地的走线应避免绕行和过多过孔,必要时在附近增加过孔与接地层相连以降低寄生电感。
  • 为保障高速信号完整性,配合差分阻抗控制走线,并避免在保护器前加入过大串联电阻;低结电容(0.95 pF)有助于减少信号衰减。
  • 对于需要更高能量吸收或多路保护的系统,可并联或组合其他浪涌保护器,但需遵循器件热与电流共享规则。

四、选型要点与注意事项

  • 若系统工作电压或PoE电平超过24 V,应选用更高Vrwm等级器件;本器件适用于24 V及以下信号线保护。
  • 钳位电压与实际浪涌电流有关,数据手册中的钳位值是在特定测试电流下测得;设计时应参考曲线并留有余量,确保下游器件不会在尖峰时遭受损伤。
  • 40 W@8/20 μs 为脉冲能量能力指标,适合经典雷击/浪涌工况下的瞬态吸收;若需长期或重复高能脉冲承受,应评估平均功耗与热管理。
  • SOT-23 封装体积小,散热与热容有限,PCB布局和地铜的散热设计对器件可靠性至关重要。

本器件以其低电容、高速兼容与符合工业级抗扰标准的特性,适合要求信号完整性与抗静电能力并重的以太网接口保护场合。选型与布局请结合具体系统工作电压、预期浪涌等级以及PCB热管理要求决定,详细测试条件与极限参数请参阅厂商数据手册。

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