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Littelfuse SMF36CA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse SMF36CA
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- SMF36CA
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.042g
- Electronic Component
- 1
- Electronic Component
- BM0231110861
- Operating Temperature
- 65℃~+150℃
- Voltage
- 58.1V
- Electronic Component
- IEC 61000-4-4；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.
SMF36CA 产品概述
SMF36CA 是 Littelfuse（美国力特）推出的一款高能量瞬态电压抑制二极管（TVS），属于双向（BI）防护器件，典型用于抑制瞬态过压和静电放电，保护敏感电子电路免受浪涌与ESD 损害。该器件在小巧的 SOD-123FL 封装中实现 200W（10/1000µs）脉冲功率能力，适合空间受限但对防护能力有较高要求的应用。
一、主要特性
- 极性：双向（BI），对称钳位，适合交流或双向浪涌防护。
- 反向截止电压 Vrwm：36 V（工作钳位电压参考）。
- 击穿电压 VBR：44.2 V（典型值）。
- 钳位电压 Vc：58.1 V（在标称冲击条件下测得）。
- 峰值脉冲电流 Ipp：3.4 A（10/1000 µs）对应器件钳位性能。
- 峰值脉冲功率 Ppp：200 W（10/1000 µs）。
- 反向静态电流 Ir：1 µA（典型值，测量条件下）。
- 工作温度范围：-65 ℃ ～ +150 ℃。
- 符合 IEC 61000-4-4（EFT）与 IEC 61000-4-2（ESD）防护规范要求。
二、典型应用场景
- 电源总线保护：用于直流/交流供电线路的瞬态抑制，保护下游稳压器与控制电路。
- 通信接口与数据线保护：串口、以太网、CAN、RS-485 等接口的差分或共模浪涌防护（双向特性使其适合差分线路）。
- 工业控制与自动化设备：现场总线、传感器输入与执行器驱动侧的浪涌与静电防护。
- 消费类与便携设备：在空间受限的系统中提供高能量脉冲吸收能力。
三、封装与机械信息
- 封装：SOD-123FL，适合表面贴装（SMT），便于自动化贴装与回流焊工艺。
- 小尺寸设计有利于高密度 PCB 布局，但需注意热量传导与散热路径设计，以保证在高脉冲能量事件下的可靠性。
四、选型与使用建议
- 如果系统可能遭受超过 200W 或更高峰值电流的瞬态，建议选用更高 Ppp 额定或并联多只器件的方案（需注意并联不完全对称带来的分流问题）。
- 对于单向供电系统，单向 TVS 可提供更低钳位电压与更小的泄漏；若系统为双向或差分信号，SMF36CA 双向特性更合适。
- 布局建议：器件尽量靠近被保护端口或连接器，缩短导线长度以降低感抗，同时在大电流路径上设计足够宽的铜箔以利散热。
- 焊接与温度：遵循 SOD-123FL 回流温度曲线，避免超温以免影响器件长期可靠性。
五、可靠性与规范
SMF36CA 的工作温度范围宽（-65 ℃ ~ +150 ℃），并符合 IEC 61000-4-2/4-4 等抗扰度标准，适合严苛电磁兼容（EMC）环境。实际设计中应结合系统级浪涌测试与 PCB 布局验证，以确保器件在目标场景下达到预期防护效果。
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