Model & package intelligence
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DOWO ESD9B3.3ST5G
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO ESD9B3.3ST5G
- Type
- DOWO
- Minimum package
- 8000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- ESD9B3.3ST5G
- Electronic Component
- 1
- Package
- SOD-923
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.01g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Cj- Capacitor
- 15pF
- Electronic Component
- BM0249905778
- Operating Temperature
- 55℃~+125℃
- Voltage
- 10V
- Electronic Component
- IEC 61000-4-5；IEC 61000-4-2
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ESD9B3.3ST5G 产品概述
一、产品简介
ESD9B3.3ST5G 是 DOWO（东沃）推出的一款双向瞬态抑制二极管（TVS），专为 3.3V 等级的接口和高速数据线提供静电放电（ESD）及浪涌保护。器件为单路、SOD-923 小封装，适合空间受限的便携设备与板级防护应用。
二、主要特性
- 极性：双向，适用于无直流偏置的信号线保护
- 反向截止电压（Vrwm）：3.3V
- 击穿电压（Vbr）：约 4V
- 钳位电压：10V（在指定浪涌条件下）
- 峰值脉冲电流（Ipp）：11.2A @ 8/20μs
- 峰值脉冲功率（Ppp）：100W @ 8/20μs
- 反向电流（Ir）：≤500nA（在 Vrwm 条件下）
- 结电容（Cj）：15pF，适合高速信号线
- 工作温度范围：-55℃ ~ +125℃
- 符合 IEC 61000-4-2（ESD）与 IEC 61000-4-5（浪涌）防护等级
三、典型应用场景
- USB、HDMI、MIPI、LVDS 等高速差分/单端数据接口的板级保护
- 无线终端、物联网终端、消费电子设备的外部接口（耳机、外接串口等）
- 工业控制、仪表前端的信号线与通讯口防护
四、关键规格说明
该器件在 8/20μs 浪涌测试条件下，可承受 11.2A 峰值脉冲电流并将瞬态电压钳制到约 10V，最大吸收功率 100W。15pF 的低结电容保证对高速信号影响小，典型反向漏电低至 500nA，可兼顾信号完整性与低功耗需求。
五、封装与 PCB 布局建议
- 封装：SOD-923，适合自动贴装与紧凑布板。
- 布局：器件应尽量靠近受保护的连接器或受扰节点放置，走线短且宽；到地的回流路径要采用多过孔或短接地平面以降低感性阻抗；避免在保护器与受保护线之间有长走线或大回流环路。
六、使用注意事项
- 由于为双向器件，不建议用于含有较大直流偏置的供电轨（如长期带电的 VCC）；对有直流偏置的 3.3V 电源建议采用单向 TVS。
- 请勿超过规定的 8/20μs 脉冲能量极限，避免重复或连续超过规格的浪涌。
- 在高频高速应用中，考虑结电容对信号的影响，必要时在评估后选择合适型号。
总结：ESD9B3.3ST5G 以其双向保护、低电容与高浪涌吸收能力，适合对 3.3V 等级高速数据线和外部接口进行高效的瞬态过压与静电防护。若需样片、尺寸图或更多电气特性曲线，可联系厂商获取完整数据手册。
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