WMSIC Electronic Components

WILLSEMI ESD73311CZ-2/TR ESD73311CZ

ModelESD73311CZ-2/TR
PackageDWN0603-2L
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WILLSEMI ESD73311CZ-2 / TR
Type
WILLSEMI
Minimum package
10000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
ESD73311CZ-2/TR
Electronic Component
1
Package
DWN0603-2L
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.009g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.4pF
Electronic Component
BM0257685996
Voltage
5.5V
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.

ESD73311CZ-2/TR 产品概述

一、概述

ESD73311CZ-2/TR 是 WILLSEMI(韦尔)推出的一款单路双向 TVS(二极管瞬态电压抑制器),专为保护 3.3V 等敏感信号线免受静电放电与雷电脉冲冲击而设计。器件采用 DWN0603-2L 小封装,具有极低结电容(Cj = 0.4 pF)、快速响应和符合 IEC 61000-4-2 / IEC 61000-4-5 标准的防护能力,适合高速接口与空间受限的终端产品。

二、关键参数

  • 极性:双向(对正负极性瞬态均可钳位)
  • 反向截止电压 Vrwm:3.3 V(典型工作电压等级)
  • 钳位电压 Vc(在 Ipp 条件下):5.5 V
  • 峰值脉冲电流 Ipp:20 A @ 8/20 μs
  • 峰值脉冲功率 Ppp:130 W @ 8/20 μs
  • 击穿电压:7 V(进入雪崩导通区的电压)
  • 反向电流 Ir:100 nA(在 Vrwm 条件下的漏电)
  • 结电容 Cj:0.4 pF(低电容,适合高速信号线)
  • 通道数:单路
  • 封装:DWN0603-2L(超小型表面贴装)
  • 防护等级:符合 IEC 61000-4-2(ESD)及 IEC 61000-4-5(浪涌)要求

三、主要特性

  • 低钳位电压:在大脉冲电流下钳位电压约 5.5 V,可有效保护下游 3.3 V 器件。
  • 双向结构:对正负极性瞬态均能提供对称保护,无需考虑极性方向。
  • 极低结电容(0.4 pF):对高速差分或单端信号干扰小,适用于高速数据线保护。
  • 低漏电流(100 nA):无需额外电路即可满足对待机功耗敏感的系统。
  • 紧凑封装:DWN0603-2L 适合空间受限的移动设备、便携终端与模块化电路板。

四、典型应用场景

  • 移动通信设备与智能终端的 I/O 口保护(触摸屏、按键等)
  • IoT 节点、传感器接口、数据采集前端的 ESD/浪涌保护
  • 高速接口的辅助保护(如 USB/串行信号线、低电平差分线)
  • 工业控制、楼宇自动化中需满足 IEC 标准的接口保护设计

五、PCB 布局与设计建议

  • 靠近受保护的连接器或引脚放置 TVS,建议距离小于 1 mm,以降低走线电感与延迟。
  • TVS 至地的走线应尽量短、宽,并通过多点接地或地平面减少回路阻抗。
  • 对高速差分对,应评估是否需要在每条线上并联独立 TVS 或采用差分对保护方案,保持信号完整性。
  • 如果系统存在多次能量注入(如浪涌环境),在保护器件后端考虑串联阻抗或限流元件以分担能量。
  • 封装热与焊接:采用标准回流焊工艺焊接,遵循厂商推荐的温度曲线,避免长期在高温下存放损伤器件。

六、使用注意事项

  • TVS 为瞬态能量吸收器,不可用于持续功率或作为稳压器;长时间超过 Vrwm 的电压会导致器件发热甚至失效。
  • 规格中 Ipp 与 Ppp 基于 8/20 μs 波形,实际系统中脉冲波形差异会影响钳位表现,需按系统脉冲特性评估。
  • 双向器件无需极性识别,但在差分线应用时需保证对称布局以免影响差分阻抗。
  • 若需更高等级的浪涌或雷击保护,应在系统设计中配合一级浪涌保护器(SPD)或更大功率 TVS 联合使用。

七、采购信息与型号说明

  • 型号:ESD73311CZ-2/TR
  • 品牌:WILLSEMI(韦尔)
  • 封装:DWN0603-2L(单路双向 TVS)
  • 适用标准:IEC 61000-4-2 / IEC 61000-4-5(具体测试等级请参见厂家测试报告)

总结:ESD73311CZ-2/TR 以其低电容、低漏电、低钳位和小尺寸特点,适合对 3.3 V 敏感接口的高频率、低功耗产品进行静电与浪涌保护。在布局、散热和脉冲能量管理方面做好配合,可有效提升系统抗扰度与可靠性。若需进一步的曲线图、封装尺寸或耐压测试数据,建议参阅 WILLSEMI 官方数据手册或联系供应商获取完整资料。

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