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DOWO SMF30CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMF30CA
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMF30CA
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.04g
- Electronic Component
- 1
- Electronic Component
- BM0230041547
- Operating Temperature
- 55℃~+150℃
- Voltage
- 48.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 33.3V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF30CA 产品概述
一、概述
SMF30CA 是 DOWO(东沃) 提供的一款双向瞬态电压抑制二极管（TVS），采用 SOD-123 表面贴装封装，专为抑制交流或双向脉冲浪涌设计。器件工作温度范围宽（-55℃～+150℃），适用于工业级环境下对短时高能量浪涌保护的需求。
二、主要参数
- 极性：双向
- 反向截止电压 Vrwm：30V
- 击穿电压（Vbr）：33.3V
- 钳位电压（Vc）：48.4V
- 峰值脉冲电流（Ipp）：4.13A（8/20μs）
- 峰值脉冲功率（Ppp）：1kW @ 8/20μs
- 反向电流 Ir：1μA（常温、在 Vrwm 下）
- 工作温度：-55℃～+150℃
- 封装：SOD-123
- 类型：TVS（未分类）
三、电气性能解读
双向结构表示器件在正、负向突波时均能工作，适合交流线路或双向耦合的保护场景。Vrwm=30V 意味着在静态工作时被保护线路的最大直流工作电压不宜超过 30V；击穿电压 33.3V 为器件由高阻态进入导通的起始电压区间，钳位电压 48.4V 表示在峰值脉冲流经时对被保护节点的最大钳位电平（与浪涌波形、测试条件相关）。Ppp=1kW@8/20μs 与 Ipp=4.13A 表明在 8/20μs 标准冲击波形下具有较高的瞬态能量吸收能力。
四、典型应用
- 24V/30V 工业控制电源与信号线路的浪涌保护
- 串联通信对称接口、差分线对的浪涌抑制
- 电源输入端、逆变器及配电模块的瞬态保护
- 需要双向浪涌钳位的小型化板载保护电路
注：由于钳位电压接近 48V，选用时应确认被保护器件能承受该峰值电压。
五、封装与安装注意
SOD-123 为小型表面贴装封装，利于密集布局与自动贴装。实际设计时建议：
- 将 TVS 靠近被保护的输入/输出接口焊接，最短走线以降低感抗引起的额外电压峰值。
- 为高能量脉冲提供良好散热路径，必要时在引脚附近布置铜箔或过孔。
- 焊接时遵循厂家温度极限与回流曲线，避免超温影响长期可靠性。
六、选型与使用建议
- 确认系统最大持续工作电压不超过 Vrwm（30V），并保证器件在常态下不频繁进入击穿区以延长寿命。
- 对于频繁或高能量的冲击场合，评估是否需要并联更高能量吸收能力的器件或外部限流元件。
- 在需要更低钳位电压或更大脉冲电流能力的场景，比较同类参数的其他型号以满足保护裕度。
- 出厂参数多为典型测试条件下给出，实际应用请参考更详细的器件数据手册以获得完整电气特性与测试条件。
以上为基于所给规格的 SMF30CA 概述与实用建议，如需器件曲线（I-V、钳位随电流变化）或封装外形尺寸图，请告知以便提供更详细资料。
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