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MSKSEMI SMBJ30A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI SMBJ30A
- Type
- MSKSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- SMBJ30A
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.2g
- Electronic Component
- 1
- Electronic Component
- BM0226270616
- Voltage
- 48.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 36.8V
- 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.
SMBJ30A 产品概述
一、概述
SMBJ30A 是美森科（MSKSEMI）推出的一款单向瞬态电压抑制（TVS）二极管，封装为 SMB (DO-214AA)。器件针对瞬态过压、浪涌和脉冲干扰提供快速钳位保护，适用于工业电源、通信接口和汽车电子等需要稳健瞬态抑制的场合。该型号以 30V 的反向工作电压（Vrwm）为基准，结合 600W 的峰值脉冲功率能力，能在较大能量冲击下维持有效钳位，保护下游敏感元件。
二、主要电气参数
- 类别：TVS（二极管型瞬态抑制器）
- 极性：单向（用于直流电源或单极信号线）
- 反向截止电压 Vrwm：30V
- 击穿电压 VBR：36.8V
- 钳位电压 Vc：48.4V（在指定峰值脉冲电流下）
- 峰值脉冲功率 Ppp：600W
- 峰值脉冲电流 Ipp：12.4A（波形 10/1000 μs）
- 反向漏电流 Ir：1 μA（在 Vrwm 条件下）
三、典型特性与优势
- 高能量吸收：600W 峰值脉冲功率与 12.4A 的 10/1000μs 峰值脉冲电流能力，使器件能承受工业级浪涌与雷击诱发的脉冲能量。
- 低漏电流：在额定工作电压下漏电仅约 1 μA，有利于低功耗系统长期可靠运行。
- 单向结构：在需要单极保护（例如直流电源总线或数据线）时，提供确定的导通极性与低正向压降。
- 标准化封装：SMB（DO-214AA）封装便于手工焊接与自动化贴片，且热阻与散热条件适中。
四、典型应用场景
- 工业电源防浪涌：保护 24V/30V 电源总线、控制器与驱动模块。
- 通信与接口保护：用于以太网、串口、电源接口等防雷击与电磁脉冲干扰。
- 汽车电子（非高压主线）：适用于车载辅助电源、传感器电源保护（需根据车规要求评估）。
- 消费电子与仪器仪表：防止开关瞬变、电缆耦合脉冲损坏敏感芯片。
五、使用建议与注意事项
- 选型原则：Vrwm 应略高于系统正常工作电压，但低于被保护器件的承受极限；SMBJ30A 的 Vrwm = 30V 适合典型 24V 系统或最高不超过 30V 的总线。
- 布局建议：尽量靠近被保护器件放置，最短走线到接地点以降低串联电感，保证瞬态电流能快速回流。
- 散热与能量管理：长时间或多次高能脉冲会导致结温升高，应评估实际脉冲频率并考虑并联或级联设计以分摊能量。
- 极性确认：单向 TVS 对反向脉冲（负极性）不能提供相同保护，若需双向保护应另选双向型号。
六、可靠性与合规
SMBJ30A 采用工业常用 SMB 封装，适配常见焊接工艺。实际设计中应考虑环境温度、散热条件和重复脉冲的累积效应以保证长期可靠性。针对关键应用建议进行系统级浪涌/ESD 试验验证，确保满足最终产品的安规与 EMC 要求。
如需样片或详细尺寸、典型伏安曲线与推荐焊盘模板，可向供应商索取完整技术资料与器件试验报告。
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