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TWGMC SMBJ30A TVS Diode SMBJ30A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TWGMC SMBJ30A
- Type
- TWGMC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TWGMC
- Electronic Component
- SMBJ30A
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.149g
- Electronic Component
- 1
- Cj- Capacitor
- 390pF
- Electronic Component
- BM0225962307
- Operating Temperature
- 65℃~+150℃
- Voltage
- 48.4V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 1uA
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、产品简介
SMBJ30A 为 TWGMC（台湾迪嘉）出品的单向瞬态电压抑制器（TVS 二极管），封装为 SMB。器件为电源和信号线路提供高能量冲击保护，针对 10/1000 μs 浪涌波形设计，峰值脉冲功率达 600W，适用于工业、通讯与汽车电磁兼容（EMC）防护场合。
二、主要电气参数
- 反向工作电压（Vrwm）：30V
- 击穿电压 VBR：最小 33.3V，典型 36.8V
- 钳位电压（VC）@ Ipp：48.4V
- 峰值脉冲功率（Ppp）：600W（10/1000 μs）
- 峰值脉冲电流（Ipp）：12.4A（10/1000 μs）
- 反向漏电流（Ir）：1 μA（常温）
- 结电容（Cj）：约 390 pF
- 极性：单向（推荐用于直流或单向瞬态）
- 工作结温度范围：-65℃ ～ +150℃
- 防护等级/标准：符合 IEC 61000-4-2（ESD）抗扰度要求
三、产品特点与优势
- 高功率吸收能力：600W 峰值脉冲功率能有效吸收瞬态电压、雷击和开关浪涌能量。
- 低钳位电压：VC=48.4V，可在高能冲击下保持较低的被保护电压，减少被保护设备受损风险。
- 宽温度工作范围：-65℃ 至 +150℃，适合恶劣环境与汽车电子应用。
- 低漏电与快速响应：Ir 仅 1 μA，瞬态响应快，适合保护敏感电路。
- SMB 封装易于 PCB 安装，适配常见表贴生产工艺。
四、典型应用场景
- 电源线路过压与浪涌保护（DC 24V/30V 等系统）
- 工业控制设备、PLC、驱动模块的输入端防护
- 通讯设备、电信基站及配套电源模块
- 汽车电子（车载传感、车身控制单元）——需结合汽车级可靠性验证
- 人机界面与外部接口的 ESD 保护（配合合适的串联阻抗）
五、设计与使用建议
- 布局：将 TVS 尽量靠近受保护端口或输入端放置，走线短且粗以减小感抗与寄生电阻。
- 热管理：在频繁浪涌或高能环境中考虑器件热耗散与 PCB 铜箔散热，必要时并联或配合限流元件使用。
- 配合保护：对高能事件建议配合熔断器/PTC 限流器使用，保证故障时系统可安全断开。
- 注意结电容：Cj=390 pF 较大，不推荐用于高速差分信号线上，否则会引起信号失真，应优先用于电源与低速信号保护。
六、规格与选型提示
SMBJ30A 适合要求 Vrwm≈30V、需承受 10/1000 μs 浪涌且对钳位电压有较高要求的系统。选型时请关注实际工作电压与容忍钳位电压，评估是否需要更高峰值电流或更小结电容的型号。若用于汽车关键系统，应参考厂商提供的汽车级测试数据与可靠性报告。
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