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DOWO SD03C
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SD03C
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SD03C
- Electronic Component
- 1
- Package
- SOD-323
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.03g
- Electronic Component
- 1
- Cj- Capacitor
- 90pF
- Electronic Component
- BM0264215332
- Voltage
- 13V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-5；IEC 61000-4-2
- Current(Ir)
- 500nA
- Voltage(VBR)
- 4V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SD03C 产品概述
一、产品简介
SD03C 是 DOWO（东沃）推出的一款双向 TVS 二极管，采用固态硅雪崩技术，封装为 SOD-323。该器件专为 3.3V 工作电压的数字系统和便携设备提供瞬态过电压保护，能够在瞬间吸收高能脉冲并将钳位电压控制在安全范围，从而保护下游微处理器和接口电路。
二、主要特性
- 峰值脉冲功率 Ppp：500W（标准脉冲波形 tp = 8/20μs）
- 峰值脉冲电流 Ipp：40A
- 反向截止电压 Vrwm：3.3V（适配 3.3V 电源或信号线）
- 击穿电压 VBR：4V（典型）
- 钳位电压：13V（典型）
- 反向漏电流 Ir：≤500nA（在 Vrwm 条件下）
- 结电容 Cj：90pF（对高速信号有一定影响，需评估）
- 配置：双向，适合双向信号与数据线保护
- 防护认证：符合 IEC 61000-4-2（±30kV 接触/空气放电）、IEC 61000-4-4、IEC 61000-4-5
三、应用场景
- 基于微处理器的嵌入式设备与控制板
- 个人数字助理（PDA）、手持终端及便携式消费电子
- 串行/并行数据接口、I/O 端口、电源入口的瞬态浪涌防护
- 需要双向保护的信号线（例如差分或可反向施加电压的接口）
四、封装与布局建议
- 封装：SOD-323，小尺寸适合空间受限的应用。
- PCB 布局：器件尽量靠近受保护的端口或连接器放置，走线最短以降低环路电感；在TVS 引脚至地的回流路径上保持宽而短的接地铜箔。
- 热管理：尽量保证焊盘散热良好以便在脉冲事件时快速吸收能量。对于频繁冲击环境，考虑并联或更高额定能量器件。
五、选型与注意事项
- 若用于高速接口（USB、HDMI 等），需检查 90pF 结电容对信号完整性的影响；对高速要求严格的场合可考虑低容型 TVS。
- Vrwm = 3.3V 适合 3.3V 系统；若系统存在较高工作电压或单向电源保护需选择相应 Vrwm/单向器件。
- 钳位电压 13V 能在大多数瞬态下有效限制电压峰值，但对敏感器件仍需评估是否足够低。
- 对长期可靠性关注时，参考厂商冲击寿命与热循环数据，并在设计中预留安全裕度。
六、总结
SD03C 提供高达 500W 的瞬态能量吸收能力、低漏电和较低钳位电压，适合保护 3.3V 体系的通用 I/O 与便携设备接口。其双向配置和多项 IEC 抗扰度认证，使其在防护设计中具有良好的通用性与可靠性。选型时请结合结电容、钳位要求和实际应用场景对信号完整性与保护级别进行综合评估。
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