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BORN SMFJ13A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMFJ13A
- Type
- BORN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMFJ13A
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.042g
- Electronic Component
- 1
- Electronic Component
- BM0258713082
- Voltage
- 21.5V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 15.9V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMFJ13A 产品概述
一、产品简介
SMFJ13A 是 BORN（伯恩半导体）出品的一款单向瞬态电压抑制二极管（TVS），用于吸收瞬态过电压、保护电源线和敏感电子器件。器件为单向工作模式，采用 SOD-123 表面贴装封装，体积小、安装方便，适合批量生产和空间受限的电路板设计。
二、主要参数与性能
- 极性：单向（Unidirectional）
- 反向截止电压 Vrwm：13V（额定工作电压）
- 击穿电压（典型）Vbr：15.9V
- 钳位电压 Vcl：21.5V（在峰值脉冲条件下）
- 峰值脉冲电流 Ipp：9.3A
- 峰值脉冲功率 Ppp：200W（测试波形 10/1000µs）
- 反向漏电流 Ir：1µA（典型条件下）
- 封装：SOD-123
这些参数表明 SMFJ13A 能在 12V 级电源系统中对短时高能浪涌提供有力钳位，且正常工作时漏电小，不影响系统静态表现。
三、典型应用场景
- 汽车 12V 电源总线及车载电子保护（适用于需要在反向极性考虑下选型的场合）
- 工业设备电源防护、继电器驱动与电机控制模块
- 通信、电力和安防系统的端口浪涌抑制
- 消费类电子中 12V 供电部分的浪涌保护（如背光驱动、电源输入）
四、封装与机械特性
SOD-123 小型封装便于表面贴装生产，适合自动化回流焊工艺。建议遵循厂商提供的回流焊温度曲线和处理规范，避免长期高温导致性能退化。封装利于靠近受保护节点布局，从而降低走线感应与寄生阻抗。
五、使用建议与注意事项
- 推荐将 TVS 靠近外部接口或连接器放置，短引线以减少感应电压。
- 禁止将其作为持续限流器使用：当处于钳位状态时会产生热量，应配合合适的系列阻抗或熔断保护。
- 注意脉冲能量限制：200W@10/1000µs 为一次浪涌额定值，短路或频繁高能冲击会缩短寿命。
- 单向器件在电路中需正确连接（阳极接地/负 rail，阴极接向被保护线），以保证正向导通钳位效果。
六、PCB 布局与热管理
- 放置位置：靠近受保护端口、靠近连接器或电源输入端。
- 走线布局：地线尽量短、粗；避免长回路形成大感抗。
- 热管理：在高能脉冲环境中考虑器件散热能力和周围铜箔面积，必要时在地平面增加散热通道或使用热沉策略。
七、替代与选型提示
需要寻找替代器件时，关注 Vrwm、Vbr、Vcl、Ipp、Ppp 以及封装一致性。若系统需要更高能量吸收，可选取更大功率（如 SMA/SMBJ 系列）或并联/串联结合的解决方案，且应验证并联不均流风险。
八、结论
SMFJ13A 以其 13V 的反向截止电压、21.5V 的钳位能力和 200W 的瞬态功率吸收能力，适合保护 12V 级电源与接口不受突发高能浪涌损害。合理的 PCB 布局、正确的连接方式及对脉冲能量的控制是确保长期可靠运行的关键。
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