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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
DOWO SMBJ15A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMBJ15A
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMBJ15A
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.21g
- Electronic Component
- 1
- Electronic Component
- BM0231033185
- 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.
SMBJ15A（DOWO 东沃）产品概述
一、产品简介
SMBJ15A 是东沃（DOWO）推出的一款单向瞬态电压抑制二极管（TVS），封装为 SMB（DO‑214AA），用于吸收瞬态过电压和脉冲浪涌，保护敏感电子电路。器件设计用于承受高能脉冲（10/1000 μs），适合汽车、工业及通信等电源与信号防护场合。
二、主要技术参数
- 钳位电压（Vc）：24.4 V（在峰值脉冲电流下）
- 工作温度：-55 ℃ ~ +150 ℃
- 击穿电压（Vbr）：16.7 V
- 反向截止电压（Vrwm，稳态耐受电压）：15 V
- 峰值脉冲功率（Ppp）：600 W（10/1000 μs）
- 峰值脉冲电流（Ipp）：24.59 A
- 反向漏电流（Ir）：1 μA（通常在 Vrwm 下测量）
- 极性：单向（有极性，带阴极标记）
- 封装：SMB（DO‑214AA）
三、典型应用
- 12V/24V 汽车电子总线及车载仪表防护（对12V系统尤其匹配）
- 开关电源输入端的浪涌保护
- 工业控制设备、电机驱动接口的抗干扰保护
- 通信设备、信号线保护与端口防护
四、封装与安装注意
SMB（DO‑214AA）为表面贴装封装，焊盘布局和热散设计应尽量减少引线电感与热阻。单向器件有明显的极性带（阴极），安装时务必保证方向正确。建议靠近被保护器件放置、走线短且粗，并配合适当的散热铜箔或过孔以利热量传导。
五、使用建议与注意事项
- Vrwm（15 V）应高于正常工作电压并尽量接近系统最高稳态电压，避免器件长期在击穿区工作。
- 峰值参数（600 W、Ipp 24.59 A）仅适用于短时间脉冲（10/1000 μs），不能作为连续过电流承受指标。
- 环境温度升高会增加漏电流并降低耐冲击能力，设计中应考虑热降额和重复冲击寿命。
- 单向结构仅对一个方向抑制，若需双向保护请选用双向型号。
六、选型要点
选型时关注稳态允许电压（Vrwm）是否匹配系统伏位、钳位电压是否在被保护器件可承受范围内以及脉冲能量（Ppp）与预期浪涌情况是否匹配。SMBJ15A 在中等能量冲击场景（汽车/工业输入浪涌）中具备良好性价比。
本概述旨在提供快速技术参考，具体应用时请结合器件完整规格书与实际电路条件进行验证。
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