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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
SHIKUES SMBJ12A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES SMBJ12A
- Type
- SHIKUES
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SHIKUES
- Electronic Component
- SMBJ12A
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.234g
- Electronic Component
- 1
- Cj- Capacitor
- 390pF
- Electronic Component
- BM0257628041
- Operating Temperature
- 65℃~+150℃
- Voltage
- 19.9V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 14.7V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ12A 产品概述
一、产品简介
SMBJ12A 是 SHIKUES（时科）出品的一款单向瞬态电压抑制二极管（TVS），封装为 SMB（DO-214AA）。器件用于对瞬态过电压和浪涌电流进行钳位保护，将瞬态能量安全引入地线，保护后端电路免受击穿和失效。器件适用于直流电源与中低频脉冲抑制场合。
二、主要参数
- 极性：单向
- 反向截止电压 Vrwm：12 V
- 击穿电压（典型）：14.7 V
- 钳位电压 Vc（Ipp 对应）：19.9 V
- 峰值脉冲电流 Ipp：30.2 A
- 峰值脉冲功率 Ppp：600 W @ 10/1000 μs
- 反向电流 Ir：1 μA（典型）
- 结电容 Cj：390 pF
- 工作温度：-65 ℃ ~ +150 ℃
- 类型：TVS（瞬态抑制管），封装：SMB（DO-214AA）
三、产品特点
- 高能量吸收能力：Ppp 600 W，能承受短时大能量浪涌。
- 低钳位电压：在 Ipp 条件下钳位至约 19.9 V，保护电路电压应力可控。
- 低漏电：反向电流 1 μA，有利于低功耗系统。
- 宽工作温度：适合工业级与恶劣环境应用。
- 较大结电容（390 pF）：对电源及低速信号保护效果好，但不适合高频高速信号线保护。
四、典型应用
- 直流供电总线、汽车电子电源防护（须确认车规兼容性）
- 工业控制、电源适配器、逆变器输入保护
- 继电器、马达驱动线路的浪涌抑制
（注：由于较高结电容，不建议用于 USB/HDMI 等高速差分信号线）
五、安装与使用建议
- 贴近受保护端口或连接器放置，尽量缩短焊盘与走线，降低电感。
- 不要超过 Ppp 与 Ipp 规范，多次冲击时需考虑热积累与器件退化，必要时选用更高能量等级或并联/串联方案并遵循粘附与散热设计。
- 对于精密或高速电路，关注 Cj 对频响的影响，必要时选择低电容型 TVS。
- 存储与工作环境避免超过规定温度范围并防潮防震。
六、封装与选型提示
SMB（DO-214AA）封装便于手工焊接与自动贴装，热阻和散热面积适中。选型时参考系统最大工作稳压 Vrwm、允许钳位电压与浪涌能量，确保 TVS 在击穿后钳位电压低于被保护器件的最大承受电压。
如需样品或更详细的电气特性曲线（I-V 曲线、能量吸收曲线、脉冲测试波形等），建议联系厂商获取完整规格书。
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