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CJ SMBJ30CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ SMBJ30CA
- Type
- CJ
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- SMBJ30CA
- Electronic Component
- 1
- Package
- SMBG
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.192g
- Electronic Component
- 1
- Electronic Component
- BM0230578336
- Voltage
- 48.4V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 33.3V
- 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.
SMBJ30CA（SMBG）TVS二极管产品概述
一、产品简介
SMBJ30CA 是 CJ（江苏长电/长晶）出品的双向瞬态抑制二极管（TVS），封装为 SMBG（SMBJ）。器件面向电源线和信号线的浪涌、雷击和电静电放电等瞬态过压保护，具有响应快、钳位性能好、重复浪涌能力强等特点。型号常见于工业电源、通信设备和车载电子等需要中等能量冲击保护的场合。
二、主要电气参数
- 极性：双向（Bidirectional），对正负瞬态均可抑制
- 反向截止电压 Vrwm：30 V（推荐工作电压/稳压点下限）
- 击穿电压（Vz）：33.3 V（典型）
- 钳位电压（Vc）：48.4 V（在规定脉冲条件下测得）
- 峰值脉冲电流 Ipp：12.4 A（对应厂家规定的脉冲波形）
- 峰值脉冲功率 Ppp：600 W（按标准脉冲条件评定，具体测量波形见规格书）
- 反向漏电流 Ir：5 μA（在 Vrwm 下的典型值）
- 类型：TVS（瞬态电压抑制器）
三、工作原理要点
TVS 二极管在正常工作电压下呈高阻态，仅有微小泄漏电流。当出现瞬态过压（如雷击、电磁脉冲、开关感应）时，器件迅速进入雪崩导通区，将能量钳位并转移到地或对称线上，从而保护后端电路。双向型结构在正负脉冲下均表现为对称钳位，适合交流或双极性信号环境。
四、典型应用场景
- 工业电源和直流总线过压保护（24 V、30 V 等等级）
- 通信设备与数据线路防浪涌保护
- 车载电子的局部防护（需结合汽车级规格确认）
- 电源适配器、PWM 驱动器、电机控制器的输入端浪涌抑制
五、封装与热管理
SMBG 封装便于表贴焊接，适合自动化贴装流程。尽管峰值功率达 600 W，但瞬态能量应考虑器件温升与 PCB 散热条件：推荐在受保护节点与器件之间保持最短导线距离、加大铜箔面积并靠近接地平面，以提高重复冲击能力与热循环寿命。
六、使用建议与注意事项
- 选型时以 Vrwm 接近系统工作电压为准，留出安全裕量以避免误触发。
- 钳位电压 Vc 应保证不超过被保护器件的最大耐压。
- 注意脉冲测量条件（波形、脉宽），Ppp 与 Ipp 通常基于特定波形（详见数据表）。
- 在高重复冲击场合考虑并联器件或使用更高能量等级的 TVS。
- 焊接时遵循厂商推荐的回流温度曲线，避免过热导致特性漂移。
七、可靠性与合规
CJ（江苏长电/长晶）作为供应商，通常对 TVS 器件进行过温循环和浪涌耐久测试。具体环境、温度范围、寿命与合规认证（如 RoHS）信息，请参考该型号完整数据手册与供应商出具的检验报告。
如需更深入的应用指导（例如 PCB 布局建议、实测钳位曲线或波形条件说明），建议提供具体系统电压与预期浪涌波形，以便给出针对性的设计建议。
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