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MSKSEMI SMAJ12CA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI SMAJ12CA
- Type
- MSKSEMI
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- SMAJ12CA
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.1g
- Electronic Component
- 1
- Electronic Component
- BM0224981440
- Voltage
- 19.9V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 14.7V
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ12CA 产品概述
一、概述
SMAJ12CA 是 MSKSEMI（美森科）推出的一款双向瞬态电压抑制器（TVS），采用 SMA 封装，专为 12V 工作电压系统的浪涌与瞬态抑制设计。器件类型为双向 TVS，适用于交流或双向脉冲环境，可在瞬态事件发生时迅速钳位电压，保护下游元件免受过压损害。
二、关键电气参数
- 反向截止电压（Vrwm）：12V，适用于典型 12V 直流系统保护。
- 击穿电压（Vbr）：14.7V（标称），在此电压附近进入导通状态。
- 钳位电压（Vc）：典型 19.9V（@ 10/1000μs 脉冲），对浪涌电流进行有效钳位。
- 峰值脉冲功率（Ppp）：400W（10/1000μs 波形），表明对长尾冲击脉冲具备较强吸收能力。
- 峰值脉冲电流（Ipp）：20.11A（10/1000μs），对应给定脉冲波形下的最大冲击电流能力。
- 反向静态电流（Ir）：1μA（在 Vrwm 下），漏电小，有利于降低静态能耗。
三、典型应用场景
- 汽车电子 12V 负载侧保护（ECU、传感器、车载摄像头等）。
- 电源输入端与电源总线的浪涌抑制。
- 通信接口与数据线的双向瞬态防护（如 CAN 总线、串口等）。
- 工业控制设备、仪器仪表等对浪涌与反向尖峰敏感的场合。
四、使用建议与注意事项
- 布局：器件应尽量靠近受保护端口或连接器，走线短且宽以减小寄生阻抗。
- 散热与功率管理：虽然峰值吸收能力高，但连续或重复大能量冲击需要良好散热与适当的热闭合，必要时配合多级保护或限流元件（熔断器、PTC、电感等）。
- 极性：双向结构无需方向限制，适合交流或可能出现正负极反向冲击的应用。
- 选型：确认钳位电压与被保护电路允许的最大电压匹配，必要时参照系统容许电压余量进行余量选型。
五、封装与可靠性
SMA 封装便于表贴组装（SMT），适合体积受限的商业与车规级电路板。MSKSEMI 品牌提供量产可追溯性，适配自动化生产与常规可靠性验证。购买与设计时建议参考厂方完整数据手册以获取更多热阻、温度系数及测试条件信息。
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