Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
UMW SMBJ12CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW SMBJ12CA
- Type
- UMW
- Minimum package
- 750 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- SMBJ12CA
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.22g
- Electronic Component
- 1
- Electronic Component
- BM0230945361
- Voltage
- 19.9V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 5uA
- Voltage(VBR)
- 13.3V
- 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.
SMBJ12CA 产品概述
一、产品简介
SMBJ12CA 是友台半导体（UMW）出品的一款双向瞬态电压抑制二极管（TVS），用于抑制瞬态过电压、吸收电磁干扰和静电放电能量，保护敏感电子器件和电路。器件采用 SMB（DO-214AA）封装，适合表面贴装工艺，可靠性高，适用于各种工业与民用电子防护场合。
二、主要技术参数
- 极性：双向
- 反向稳态电压 Vrwm：12 V
- 击穿电压 Vbr：13.3 V（典型）
- 钳位电压 Vc：19.9 V（峰值钳位）
- 峰值脉冲电流 Ipp：30.2 A
- 峰值脉冲功率 Ppp：600 W（标准脉冲测试条件下）
- 反向泄漏电流 Ir：5 μA（在 Vrwm 下）
- 防护等级：满足 IEC 61000-4-4（EFT）与 IEC 61000-4-2（ESD）标准
- 封装：SMB（DO-214AA）
三、典型特性与优势
- 双向设计，可同时防护正、负方向的瞬态，非常适合交流或双向数据线保护。
- 低泄漏电流（5 μA），在稳态工作时对电路几乎无额外功耗影响。
- 高峰值吸收能力（600 W），能承受较强脉冲能量；30.2 A 峰值脉冲电流保证在瞬态事件中有效钳位。
- SMB 封装兼顾散热与尺寸，便于自动贴片与回流焊工艺。
四、典型应用场景
- 12 V 电源母线的瞬态保护（如工业控制、通信设备、电源模块等）。
- I/O 接口与信号线保护（RS‑485、CAN 等需双向保护的接口；在车辆级应用中使用前请确认相关资格与额外要求）。
- 工业控制设备、楼宇自控、医疗设备外围模块以及消费电子的防雷击、静电和电磁脉冲保护。
五、安装与使用建议
- 建议将保护器件尽量靠近被保护端口或芯片的输入端，且到参考地（GND）走线最短、阻抗最低，以提高防护效果。
- 注意器件的热量管理：在频繁脉冲或高能量环境下，应考虑散热路径或搭配限流元件以延长寿命。
- 在设计时配合滤波电容、铁氧体等器件可以得到更全面的抗干扰效果。
- 焊接时遵循 SMB 封装的回流温度曲线，避免长期高温或反复波峰焊。
六、封装与订购信息
- 封装：SMB（DO-214AA），适合自动贴片生产线。
- 品牌：UMW（友台半导体）。
- 型号建议标注为 SMBJ12CA，订购或设计前请向供应商确认最新的技术手册与试验条件，以便核对钳位电压与脉冲测试波形（不同测试波形下参数可能有所差异）。
如需更详细的电气特性曲线、脉冲测试波形（例如 10/1000 μs 或 8/20 μs）、封装尺寸图或可靠性数据，我可以帮助获取或解读相关数据手册。
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