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DOWO SMAJ15CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ15CA
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ15CA
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.117g
- Electronic Component
- 1
- Electronic Component
- BM0264801954
- Operating Temperature
- 55℃~+150℃
- Voltage
- 24.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 16.7V
- 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.
SMAJ15CA 产品概述
一、概述
SMAJ15CA 是 DOWO（东沃）推出的一款双向 TVS 抑制二极管，采用玻璃钝化芯片和 DO-214AC（SMA）封装，专为瞬态过压保护设计。该器件在 10/1000μs 波形下具备 400W 峰值脉冲功率能力（占空比 0.01%），响应极快、钳位能力优异，适用于对浪涌抑制要求较高的直流或交流电源、信号线保护场景。
二、主要参数
- 极性：双向（Bi-directional）
- 反向截止电压 Vrwm：15V
- 钳位电压（典型）：24.4V
- 峰值脉冲电流 Ipp：16.39A（对应 10/1000μs，400W）
- 峰值脉冲功率 Ppp：400W（10/1000μs，重复率 0.01%）
- 击穿电压 VBR：16.7V（典型）
- 反向漏电流 Ir：1μA（在 Vrwm 条件下）
- 工作温度范围：-55℃ ~ +150℃
- 封装：DO-214AC（SMA，表面贴装）
- 标准：符合 RoHS 要求
三、特性与优势
- 玻璃钝化芯片，长期可靠性高，温度和湿度稳定性好。
- 低泄漏电流，适合对待机功耗敏感的系统。
- 极快响应时间，能在瞬时浪涌事件中迅速夹住电压，保护下游元件。
- 高峰值功率承受能力（400W@10/1000μs），对单次浪涌有良好吸收能力。
- 双向结构便于保护交流线路或双向脉冲环境，简化线路设计。
四、典型应用
- 12V/24V 汽车电源系统输入保护（注意 Vrwm 选择留有裕量）
- 工业电源与驱动模块的浪涌保护
- 电信设备、基站电源与接口防护
- 电源适配器、充电器以及逆变器的过压瞬态抑制
- 数字与模拟信号线（双向脉冲保护场合）
五、封装与使用建议
- DO-214AC（SMA）为常见的表面贴装封装，便于自动贴片与回流焊工艺。
- 焊接时按制造商推荐的回流温度曲线操作，避免过热影响器件可靠性。
- 布局时尽量缩短 TVS 到被保护节点的走线，减小寄生电感以提升钳位效果。
- 对于高能量重发环境，建议配合熔断器、限流电阻或多级保护电路使用。
- 存储与装配注意防静电、防潮，长期储存建议保持原包装并控制环境温湿度。
六、选型提示
选择时应将 Vrwm 与系统正常工作电压匹配并留有裕量，关注钳位电压对下游器件耐压的影响；若应用存在频繁高能浪涌，需考虑散热与重复冲击寿命；单向与双向型号按电路特性选择。SMAJ15CA 适用于需要在 15V 等级进行双向浪涌抑制的场合。
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