WMSIC Electronic Components

WILLSEMI ESD56181W09-2/TR ESD56181W09

ModelESD56181W09-2/TR
PackageSOD-323
BrandWILLSEMI
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WILLSEMI ESD56181W09-2 / TR
Type
WILLSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
ESD56181W09-2/TR
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.04g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
600pF
Electronic Component
BM0227584879
Voltage
20V
Electronic Component
IEC 61000-4-5;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.

ESD56181W09-2/TR 产品概述

一、产品简介

ESD56181W09-2/TR 是 WILLSEMI(韦尔)推出的一款单路、单向瞬态抑制器件,封装为 SOD-323。器件针对静电放电(ESD)和脉冲浪涌(Surge)保护进行了优化,符合 IEC 61000-4-2(ESD)和 IEC 61000-4-5(浪涌)等行业抗扰度标准,适用于消费电子、通信设备与便携式终端等需要端口级过压保护的场合。

二、主要参数(关键指标)

  • 类型:ESD 抑制二极管(单路、单向)
  • 钳位电压(Vc,典型):20 V
  • 击穿电压(Vbr,典型):10.5 V
  • 反向截止电压 / 工作电压(Vrwm):9 V
  • 峰值脉冲电流(Ipp):90 A @ 8/20 µs
  • 反向漏流(Ir):100 nA(在 Vrwm 条件下典型)
  • 结电容(Cj):600 pF
  • 防护等级:符合 IEC 61000-4-5、IEC 61000-4-2
  • 封装:SOD-323
  • 通道数:单通道;极性:单向
  • 品牌:WILLSEMI(韦尔)
  • 型号:ESD56181W09-2/TR

三、性能要点与工程意义

  • 高脉冲承受能力:Ipp=90 A(8/20 µs)表示器件能承受较强的浪涌冲击,适合接入外部连接器或电源端口的抗浪涌保护。
  • 单向结构适合 DC 电源线和单方向信号线(例如电源正极)保护,可在正向瞬态时迅速导通把能量导入地。
  • Vrwm=9 V、Vbr≈10.5 V 意味着器件在正常工作时对低于 9 V 的系统无触发;当电压超过 ~10.5 V 时开始进入雪崩导通,8/20 µs 脉冲下钳位在约 20 V。选型时需确认被保护电路能承受约 20 V 的瞬态钳位电压。
  • 结电容 600 pF 较大,对高速差分或高频数据线会引入明显负载和带宽限制,更适合电源线或低速信号保护;若用于高速接口(USB3.0、HDMI 等)应优先考虑低电容方案。

四、典型应用场景

  • 便携设备充电口与电源输入的过压/ESD 保护(如手机充电、移动电源适配器)
  • 工业或消费类设备的低速通信接口、控制线、按键/接口外壳保护
  • 单端传感器电源或控制信号保护
  • 需要满足 IEC 61000-4-2/4-5 抗扰度测试的系统端口

五、布局与使用建议

  • 物理位置:器件应尽量靠近外部接口或可能受 ESD 的入点放置,缩短受保护线路到器件之间的走线长度,降低寄生电感。
  • 接地设计:器件的接地端应导向低阻抗接地平面,建议使用多条短距离过孔与地平面焊接,保证瞬态电流的低阻路径。
  • 与被保护器件的距离:尽量把保护器件放在被保护芯片和 Connector 之间,避免在保护器件与芯片之间存在长走线或可绕射回路。
  • 串联元件配合:在需要控制钳位能量传播时可与串联电阻、PTC 或阻尼元件配合使用,但串联元件会影响响应速度与最终钳位效果,设计时需权衡。
  • 高频应用注意:由于 Cj=600 pF,若用于高速信号线会影响波形与速率,建议对数据链路进行信号完整性评估或选用低电容替代品。

六、可靠性与合规

ESD56181W09-2/TR 满足 IEC 61000-4-2(接触/空放 ESD)与 IEC 61000-4-5(浪涌)等级要求,适合被集成进需通过这些抗扰度测试的产品。需要注意的是,本器件设计用于吸收短时脉冲能量,不适合承载持续过电压或作为稳压器长时间工作。实际应用中应进行板级抗扰度测试以确认端口通过性。

七、选型与替代考虑

  • 若目标线路为 5 V 或更低电压电源,Vrwm=9 V 可安全使用;对 9 V 电源也可考虑,但需评估 20 V 钳位电压对后端器件的影响。
  • 若保护对象为高频/高速数据线(如 USB2.0/高速串行),建议选择结电容更低的 ESD 器件以降低对信号的影响。
  • 若需要双向保护(差分接口或无极性信号),应选择双向(bidirectional)器件或对称保护结构。

以上为 ESD56181W09-2/TR 的产品概述与工程使用建议,设计时请结合系统电气容限与信号完整性要求进行综合评估。如需封装尺寸、典型 I-V、击穿与钳位曲线等详细规格表建议查阅厂商数据手册或联系 WILLSEMI 技术支持。

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