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DOWO SM8S28CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SM8S28CA
- Type
- DOWO
- Minimum package
- 750 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SM8S28CA
- Electronic Component
- 1
- Package
- DO-218AB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 3.281g
- Electronic Component
- 1
- Electronic Component
- BM0264866268
- Voltage
- 45.4V
- Current(Ir)
- 10uA
- Voltage(VBR)
- 31.1V
- Electronic Component
- Electronic Component
- Electronic Component
- 750
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SM8S28CA 产品概述
SM8S28CA 是一款高能量吸收的双向瞬态抑制二极管（TVS），采用玻璃钝化芯片并封装于 DO-218AB 封装。该器件专为汽车及工业级脉冲浪涌保护设计，具有极佳的钳位能力、极低的漏电流和非常快的响应速度，能在恶劣电磁环境下为敏感电子线路提供可靠保护。
一、主要特性
- 双向保护结构，适用于交流或双向脉冲场景。
- 玻璃钝化芯片，提升稳定性与可靠性。
- 峰值脉冲功率能力：6.6 kW（波形 10/1000 µs，重复率 0.01%）。
- 符合 ISO7637-2 第 5a 类浪涌规范，满足汽车电气冲击要求。
- 满足 AEC-Q101 汽车级可靠性要求，符合 RoHS 环保规范。
- 低反向漏电流（Ir ≈ 10 µA），降低静态能耗。
- 极快响应时间与出色钳位性能（钳位电压典型值 45.4 V）。
二、典型电气参数
- 反向截止电压 Vrwm：28 V（额定工作电压，单向参考）。
- 击穿电压 VBR（测试条件）：31.1 V。
- 钳位电压 Vc（峰值脉冲时）：约 45.4 V。
- 峰值脉冲电流 Ipp：145 A。
- 峰值脉冲功率 Ppp：6600 W @ 10/1000 µs（占空比 0.01%）。
- 反向漏电流 Ir：≤ 10 µA（典型值，受温度影响）。
三、封装与可靠性
- 封装：DO-218AB，适合高能量散热与波峰焊/手工焊接工艺。
- 玻璃钝化工艺提高封装内芯片抗湿热与长期漂移能力。
- 符合 AEC-Q101 认证，适合车辆电子、动力总成、车身控制模块等关键应用。
四、典型应用场景
- 汽车电子：车载电源、充电系统、车灯与车身控制模块的浪涌保护。
- 通信与信息设备：供电线、信号线保护，防止瞬态过电压损坏。
- 工业控制：变频器、PLC、传感器接口的抑制脉冲干扰。
- 电源与逆变器前端：防止雷击或开关瞬变造成的损坏。
五、选型与使用注意事项
- 选型时以 Vrwm（28 V）匹配电路正常工作电压，留有足够钳位裕度以保护下游器件。
- Ppp 和 Ipp 为瞬态脉冲能力，使用时应注意脉冲波形（10/1000 µs）与重复率限制（占空比 0.01%）；高频重复冲击会降低寿命。
- 布局时尽量缩短 TVS 到受保护节点的引线长度，优化散热路径以利于能量耗散。
- 对于需要单向保护的场合应选择相应单向器件；双向器件适合交流或可能出现正反向脉冲的线路。
- 温度、焊接工艺与环境湿度会影响漏电流与击穿特性，建议在应用环境下进行验证。
六、总结
SM8S28CA（DOWO/东沃）以其 6600 W 的瞬态吸收能力、低漏电和汽车级可靠性，为汽车与工业领域提供高效、稳健的过压保护解决方案。合理选型与良好 PCB 布局可充分发挥其钳位性能与寿命优势。若需详细器件数据手册或可靠性测试报告，可联系供应商获取完整规格书与认证资料。
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