WMSIC Electronic Components

DOWO ESD05V14T

ModelESD05V14T
PackageSOT-143
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 ESD05V14T
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
ESD05V14T
Electronic Component
1
Package
SOT-143
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.6pF
Electronic Component
BM0264548664
Voltage
15V;14V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
1uA

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

ESD05V14T 产品概述

ESD05V14T(品牌:DOWO/东沃)是一款面向移动终端与便携设备的双路单向 TVS 二极管器件,专为高频数据线与电源线路提供快速、可靠的静电和浪涌保护而设计。器件封装为 SOT-143,具有低结电容、低漏电流和较高的峰值脉冲功率能力,能够在有限板面积内实现对两路信号线的高效防护,满足 IEC 61000-4-2(ESD)与 IEC 61000-4-5(浪涌)等电磁兼容性标准的应用需求。

一、核心性能特点

  • 极性:单向(对正向过压快速导通至地)
  • 工作反向电压 Vrwm:5 V(适合 5 V 电源及接口保护)
  • 击穿电压 VBR:约 7 V(在规定电流下测得)
  • 峰值脉冲功率 Ppp:50 W(8/20 µs 波形)
  • 钳位电压:典型在 14–15 V 范围(在 8/20 µs 峰值脉冲时)
  • 反向漏电流 Ir:≤ 1 µA(在 Vrwm 下)
  • 结电容 Cj:最大 0.6 pF(非常适合高速信号)
  • 通道数:双路(同时保护两条独立线路)
  • 防护等级:符合 IEC 61000-4-2 和 IEC 61000-4-5 要求
  • 封装:SOT-143,体积小,适合密集布板
  • 典型应用:手机及配件、笔记本电脑、手持设备的 USB、数据线、摄像头及音频接口防护

二、主要电气参数解读

  • Vrwm = 5 V:表明器件在标称 5 V 工作电压下处于反向截止状态,适合保护 5 V 供电或数据接口(如 USB2.0、充电线等)。
  • VBR ≈ 7 V:当电压超过击穿值时,器件进入导通区,开始钳位。VBR 用于判断击穿起始点。
  • 钳位电压 14–15 V:在 8/20 µs 的冲击脉冲条件下,器件能将浪涌电压钳制到约 14–15 V,保护后端元件免受高压冲击。
  • 峰值脉冲功率 50 W(8/20 µs):对短时浪涌(例如充电器突发浪涌、雷击感应等)的吸收能力良好。
  • 结电容 ≤ 0.6 pF:非常低的并联电容使其对高速信号线的影响最小,适合高速差分对或高速串行接口。
  • 漏电流 ≤ 1 µA:低静态漏电有利于电源效率和电池供电系统的待机功耗控制。

三、应用场景与推荐用途

  • 手机与配件:充电口、USB 数据线、音频接口、SIM 卡接口等易受静电/浪涌冲击的位置;
  • 笔记本与手持终端:外设接口(USB、HDMI 辅助线)、摄像头/麦克风输入;
  • 高速数据线:适用于对电容敏感的高速差分信号(USB2.0、某些 MIPI/CSI 应用,但需根据具体速率和差分对要求确认);
  • 小型整机与模块化板:SOT-143 的小尺寸便于在接口密集处进行局部保护。

四、封装与安装注意事项

  • SOT-143 封装体积小,建议将器件尽量靠近被保护的连接器或 IC 引脚放置,以缩短非受控走线长度;
  • 单向器件在 PCB 上需正确极性放置:通常阴极端接至被保护线,阳极或共同端接地(具体器件引脚图参考厂商数据手册);
  • 为保证良好的钳位效果,接地回路应低阻抗:在器件附近增加地平面或地铜,并使用多孔过孔将保护点迅速连接到底层地。

五、PCB 设计与布局建议

  • 保护器件尽量放在外部连接器和受保护电路之间的第一处元件,优先靠近接口;
  • 缩短保护点到地的返回路径,使用足够宽的地铜和短过孔,避免长回流路径引入额外感抗;
  • 对高速信号线,尽量避免在保护器件处出现不必要的阻抗不连续;必要时可搭配小阻值匹配电阻或差分阻抗控制元件;
  • 若保护电路需承受较大能量,可考虑在 TVS 前加入限流元件(如熔断器、磁珠或小电阻)以分担能量。

六、可靠性与合规

ESD05V14T 通过 IEC 61000-4-2 与 IEC 61000-4-5 类型规范的设计验证,能吸收标准 ESD 冲击和浪涌事件。器件在 8/20 µs 波形下具备 50 W 的脉冲吸收能力,适合常见移动设备的接口保护需求。实际使用时应结合系统级 EMC 设计来保证长期可靠性。

七、选型要点与替代建议

  • 若目标应用对信号完整性极端敏感(如高速 USB3.0/PCIe),需确认更低电容或专用差分保护器件;
  • 若工作电压高于 5 V 或需双向保护,应选择相应 Vrwm 更高或双向类型的 TVS 器件;
  • 对于更高能量冲击场景,考虑功率更高或并联多个器件的方案以增加吸能能力。

总结:ESD05V14T 是一款针对 5 V 工作环境优化的、低电容、双路单向 TVS 器件,适合在手机、笔记本及各类手持设备的接口处实施高效的静电与浪涌防护。合理的 PCB 布局与接地设计能发挥其最佳保护效果。若需更详细的引脚配置、典型波形曲线及温度特性,请参阅东沃官方数据手册。

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