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DIOTEC SMF17A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC SMF17A
- Type
- DIOTEC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- SMF17A
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.035g
- Electronic Component
- 1
- Electronic Component
- BM0228548968
- Operating Temperature
- 50℃~+150℃
- Voltage
- 27.6V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 18.9V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMF17A 产品概述
一、产品简介
SMF17A 是 DIOTEC（德欧泰克）推出的一款单向瞬态电压抑制二极管（TVS），封装为 SOD-123FL。该器件专为瞬态过压和静电放电（ESD）保护设计，具有高能量吸收能力和宽工作温度范围，适用于商业与工业级电子设备的输入/输出接口与电源线防护。
二、主要电气参数
- 钳位电压 (Vc)：27.6 V（典型值）
- 击穿电压 (Vbr)：18.9 V
- 反向截止电压 Vrwm：17 V
- 峰值脉冲功率 Ppp：200 W
- 峰值脉冲电流 Ipp：7.25 A
- 反向电流 Ir：1 μA（在 Vrwm 下）
- 极性：单向（适用于直流电路）
- 工作温度范围：-50 ℃ 至 +150 ℃
- 防护等级/标准：符合 IEC 61000-4-2（ESD）
- 封装：SOD-123FL，便于自动贴装与波峰/回流焊接
三、性能特点与优点
- 高能量吸收：200 W 峰值脉冲功率和 7.25 A 的峰值脉冲电流，使其能有效钳制短时大能量浪涌与静电脉冲。
- 低钳位电压：在故障瞬间将瞬态电压限制在设备可承受范围内，保护下游器件免受过压损坏。
- 低泄漏电流：典型反向漏电仅 1 μA，有助于降低静态功耗，适合电池供电及低功耗系统。
- 宽温度适应性：-50 ℃ 至 +150 ℃ 的可靠工作温度，可满足汽车电子和工业环境需求。
- SOD-123FL 小型化封装：节省 PCB 面积，支持高速自动化贴装工艺。
四、典型应用场景
- USB、RS-232/RS-485、CAN 总线等信号线与通信接口防护
- 电源输入端（直流供电）瞬态抑制
- 工业控制设备、测量仪器、安防与楼宇对讲系统的接口保护
- 消费类电子、通信基站和嵌入式系统的局部浪涌防护
五、器件选用与布局建议
- 单向 TVS 适用于有明确极性的直流线路或信号线；对双向信号（交流或差分）应选用双向型号。
- 尽量将 TVS 器件靠近受保护端口或连接器放置，减小走线长度与寄生电感，提高吸收效率。
- 接地应采用低阻抗回路，保障脉冲能量迅速分散；若为敏感器件，可在 PCB 上增加旁路/滤波元件配合使用。
- 在高脉冲环境下，注意元件的热管理与焊接工艺，确保长期稳定性。
六、可靠性与合规
SMF17A 满足 IEC 61000-4-2 静电放电标准，器件在-50 ℃ 至 +150 ℃ 下仍能保持电气特性稳定，适合恶劣环境和长期寿命要求的应用。作为 DIOTEC 系列产品，兼顾成本与可靠性，适用于量产项目。
结论：SMF17A（SOD-123FL，单向 TVS，200 W）是一款适用性强、能量吸收能力出色的瞬态抑制器件。其低泄漏、宽温范围及小型封装使其在工业、通信和消费电子等场景中成为可靠的过压与 ESD 保护选择。若需进一步的电气波形、脉冲测试条件和封装尺寸图，请参考原厂数据手册以完成最终设计验证与选型。
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