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DOWO SMAJ10CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ10CA
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ10CA
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.122g
- Electronic Component
- 1
- Electronic Component
- BM0257638252
- Operating Temperature
- 55℃~+150℃
- Voltage
- 17V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 11.1V
- 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.
SMAJ10CA（DOWO 东沃）产品概述
一、产品概况
SMAJ10CA 是一款双向瞬态电压抑制器（TVS），封装为 DO-214AC（SMA）。其主要电气参数为：反向工作电压 Vrwm = 10V，击穿电压（Vbr）≈ 11.1V，钳位电压 Vc（在峰值脉冲条件下）≈ 17V，峰值脉冲电流 Ipp = 23.53A，峰值脉冲功率 Ppp = 400W（10/1000μs），静态反向电流 Ir ≈ 5μA。工作温度范围为 −55℃ 至 +150℃，适合工业级瞬态过电压保护需求。
二、主要特性
- 双向结构，支持正负极性瞬态抑制，免去极性识别。
- 10V 额定工作电压，适配 12V 及以下电源/信号总线的过压保护。
- 在 10/1000μs 测试波形下 400W 能量吸收能力，能有效承受浪涌脉冲。
- 低泄漏电流（约 5μA），对待保护电路静态功耗影响小。
- 宽工作温度范围，适合恶劣环境与工业级应用。
三、典型应用场景
- 汽车与工业电源总线（12V 系统的浪涌与反向电压保护）。
- 电源输入端、DC-DC 模块及逆变器的端口保护。
- 通信接口与信号线的瞬态抑制（需对能量等级和钳位要求评估）。
- 工业控制设备、仪器仪表的浪涌和雷击脉冲防护。
四、选型与使用建议
- 确认系统正常工作电压与 Vrwm 匹配，SMAJ10CA 适用于额定工作电压附近为 10V 的场合。
- 关心钳位电压时，应以 17V（Ipp 条件）为参考，确保在钳位电压下受保护的元件不会受损。
- 如受保护总线可能承受更大能量，应选择更高 Ppp 或并联/级联 TVS 方案，并在前端加入熔断器或限流元件。
- PCB 布局应尽量缩短从受保护节点到 TVS 的走线，减小串联感抗与寄生电感，提高瞬态吸收效率。
五、封装与安装注意
- DO-214AC（SMA）表面贴装封装，适配常规 SMA 焊盘布局。
- 推荐采用符合回流焊工艺的焊接参数并控制过热时长，避免封装受热损伤。
- 安装时保持焊点良好散热路径，有助于提升脉冲时的能量吸收能力与可靠性。
六、可靠性与测试注意
- 选型后应在目标系统上做实际浪涌、雷击与 ESD 测试验证，重点验证钳位电压与重复脉冲承受能力。
- 注意长期热循环与高温存放对器件参数（如泄漏电流、击穿电压）的影响，必要时与制造商确认可靠性数据与失效模式。
总结：SMAJ10CA 是一款面向 10V 级别电源/信号线的双向 TVS 器件，具备 400W（10/1000μs）能量吸收能力和较低泄漏，适合工业与汽车类场合的瞬态过电压保护。在设计使用时应关注 Vrwm 与钳位要求、PCB 布局及热管理，以确保系统在浪涌事件中获得可靠保护。若需用于关键或更苛刻应用，建议与供应商确认更多可靠性与测试数据。
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