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DOWO ESD5Z3.3
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO ESD5Z3.3
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- ESD5Z3.3
- Electronic Component
- 1
- Package
- SOD-523
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.024g
- Electronic Component
- 1
- Cj- Capacitor
- 105pF
- Electronic Component
- BM0264254690
- Voltage
- 14.1V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 50nA
- Voltage(VBR)
- 5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ESD5Z3.3 产品概述
一、产品简介
ESD5Z3.3（DOWO/东沃）是一款单向瞬态电压抑制（TVS）二极管，封装为SOD-523，专为3.3V工作电压的接口防护设计。器件在静电放电与脉冲浪涌事件下提供快速钳位，有效保护下游芯片免受瞬态过压损坏。产品符合IEC 61000-4-2（静电放电）和IEC 61000-4-4（电快速瞬变）等电磁兼容防护标准。
二、主要参数概览
- 极性：单向
- 反向工作电压 Vrwm：3.3 V
- 击穿电压 VBR：5 V（典型测试条件下）
- 钳位电压：14.1 V（在标准8/20μs脉冲测试下）
- 峰值脉冲功率 Ppp：240 W（8/20μs）
- 反向电流 Ir：50 nA（在Vrwm条件下）
- 结电容 Cj：105 pF（影响高速信号传输）
- 封装：SOD-523（超小型表面贴装）
三、性能与特点
- 响应快速：TVS结构提供纳秒级响应，适合瞬态抑制。
- 高功率吸收：240 W（8/20μs）峰值功率能力，能承受常见的浪涌冲击。
- 低漏电流：50 nA的反向电流有利于降低静态功耗，适合电源与I/O保护。
- 小封装：SOD-523体积小、适配高密度PCB设计，但散热与功耗受限。
- 结电容较高（105 pF），在高速差分总线或射频链路中会影响信号完整性，应谨慎选用。
四、典型应用场景
- 3.3V电源防护与接口保护（GPIO、UART、SPI、I2C 等）
- 手机、平板、智能穿戴、物联网终端及消费类电子产品的输入/输出接口防护
- 模拟/数字混合电路中对瞬态浪涌的保护（非超高速数据链路）
注意：对于高速串行接口（如USB3.0/HDMI/PCIe等），因结电容较大，不推荐使用。
五、使用建议与布局注意事项
- 单向器件应按“线—TVS—地”方式连接，确保正确极性。
- 封装小，建议将TVS靠近受保护的引脚放置，并保证流向地的回流路径短且低阻抗，以提升钳位效果。
- 考虑散热与功率能力，若电路可能承受较高能量脉冲，可并联或选用更大封装的TVS。
- 关注结电容对信号带宽的影响，必要时在数据手册基础上进行信号完整性仿真或实测。
六、选型与可靠性提示
在选型时除关注Vrwm、VBR和钳位电压外，应考量结电容对信号带宽、封装的热阻、以及实际的脉冲能量（是否超出240 W@8/20μs）。推荐在量产前完成ESD/EMC实验验证与长期温度循环测试，以确保在目标应用环境下的稳定性与可靠性。
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