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RUILON SMBJ3.3A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMBJ3.3A
- Type
- RUILON
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- SMBJ3.3A
- Electronic Component
- 1
- Package
- DO-214AA(SMB)
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.232g
- Electronic Component
- 1
- Electronic Component
- BM0230692109
- Operating Temperature
- 55℃~+150℃
- Voltage
- 7.2V
- Current(Ir)
- 10uA
- Voltage(VBR)
- 6V
- 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.
SMBJ3.3A 产品概述
一、产品简介
SMBJ3.3A 是 RUILON（瑞隆源）推出的一款单向瞬态电压抑制（TVS）二极管，封装为 DO-214AA（SMB）。器件专为保护 3.3V 系统的电源与信号线免受浪涌、静电和电瞬变损害而设计，适用于工业、通信、嵌入式与汽车电子等场景。
二、主要参数
- 类型：TVS（单向）
- 反向截止电压 Vrwm：3.3V
- 击穿电压 Vbr：6V
- 钳位电压 Vc（典型）：7.2V
- 峰值脉冲电流 Ipp：42A @ 10/1000µs
- 峰值脉冲功率 Ppp：300W @ 10/1000µs
- 反向电流 Ir：10µA（常温）
- 工作温度：-55℃ ~ +150℃
- 封装：DO-214AA（SMB）
- 型号：SMBJ3.3A，品牌：RUILON（瑞隆源）
三、主要特性
- 高能量吸收能力：10/1000µs 波形下可承受 42A 峰值电流，300W 峰值功率，适合电网和雷击后浪涌吸收。
- 低钳位电压：7.2V 钳位在保护 3.3V 负载时能有效限制突波幅度，降低下游元件应力。
- 宽工作温度：-55℃ 至 +150℃，适应苛刻环境。
- 小泄漏电流：10µA（常温），对低功耗系统影响小。
- SMB 封装便于安装、热性能良好，适合自动贴装与回流焊工艺。
四、典型应用
- 3.3V 电源总线保护（主供电、辅助电源）
- 串口、以太网、CAN 总线和数据线防护
- 工业控制、通信设备、基站与服务器端口保护
- 汽车电子部件、车载信息娱乐系统与传感器保护（需确认汽车级认证）
五、封装与可靠性
DO-214AA（SMB）封装提供良好热阻与机械强度。为保证长期可靠性，应遵循厂家推荐的焊接曲线和 PCB 布局：短回流时间、避免热应力集中、增加散热走线或铜箔以降低结温。器件通过温度循环、高温存储与冲击测试可获得稳定的浪涌保护性能（具体认证与寿命请参阅 RUILON 资料）。
六、选型与使用建议
- 确认系统最大工作电压与 Vrwm 匹配（本件适用于 3.3V 系统）。
- 根据可能遭遇的浪涌能量选择合适的 Ppp 与 Ipp 余量。
- 注意钳位电压在极端浪涌下仍需低于被保护元件的最大耐受电压。
- 布局上应尽量缩短保护器件到被保护端的连接路径，减小寄生感抗。
- 对于双向电源或交流线路，应选用对应的双向型 TVS 器件。
七、安装与维护要点
建议采用标准 SMT 回流焊流程，并在 PCB 上设计符合 SMB 封装的焊盘尺寸与热沉铜箔。避免在已裂纹或受力的器件上继续使用，发生多次大能量冲击后应更换器件以确保保护性能。
如需完整电气特性曲线、热阻和典型钳位波形，请参阅 RUILON 官方数据手册以获得详细参数与测试条件。
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