Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Littelfuse SP3401-02UTG SP3401
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse SP3401-02UTG
- 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
- SP3401-02UTG
- Electronic Component
- 1
- Package
- UDFN-6(1.6x1)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.06g
- Electronic Component
- 1
- Electronic Component
- BM0229962959
- Voltage
- 9V
- Voltage(VBR)
- 6.5V
- 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.
SP3401-02UTG 产品概述
一、产品简介
SP3401-02UTG 为 Littelfuse（美国力特）出品的一款单向 TVS 二极管，采用紧凑的 UDFN-6 (1.6 × 1.0 mm) 封装，针对 3.3V 工况电源/数据线的瞬态过压保护而设计。器件静态反向截止电压 Vrwm = 3.3V，击穿电压约 6.5V，典型钳位电压为 9V（Ipp 条件下），峰值脉冲能力 Ipp = 10A（8/20 μs），能有效抑制由浪涌、电磁脉冲或静电放电引起的瞬态过电压。
二、主要特性
- 单向保护，适合DC 电源或单向信号线。
- 工作晾压 (Vrwm)：3.3V，适配 3.3V 系统。
- 击穿电压 Vbr ≈ 6.5V，钳位电压 Vclamp ≈ 9V（Ipp=10A@8/20μs）。
- 峰值脉冲电流 Ipp = 10A（8/20 μs），对短时浪涌有良好吸收能力。
- 超小 UDFN-6 封装，便于空间受限的便携式与工业板设计。
三、典型应用场景
- 3.3V 电源轨的过压/浪涌防护（例如 MCU、SoC 电源输入）。
- 高速接口与信号线保护（GPIO、串口、传感器接口等）。
- 通讯设备、消费电子、工业控制模块与车载辅助电子（非主驱动高压）等需短时浪涌抑制的场合。
四、PCB 布局与安装建议
- 将 TVS 靠近受保护的连接器或引脚放置，以减小走线感应电感与回路面积。
- 输入线到器件的走线尽量短且宽，确保低寄生电感与良好散热。
- 器件地端应与系统地平面短路，以提供低阻抗回流路径；必要时设计热过孔提高散热能力。
- 采用标准回流焊工艺贴装，注意静电与湿敏防护（按制造商推荐的储存/回流条件处理）。
五、选型与系统设计要点
- 确认长期工作电压与 Vrwm 匹配，避免在长期偏压下器件进入击穿区。
- 依据系统能量需求选择 Ipp 等级；若可能遇到更强的浪涌，需并联更大能量吸收器或在前端增加熔断/限流元件。
- 考虑钳位电压对下游器件的承受能力，9V 钳位适用于能接受短时较高电压的电路；对敏感器件应增加二次保护或滤波。
六、可靠性与合规性建议
- 设计时可配合符合 IEC 静电放电与浪涌抗扰度试验（如 IEC 61000-4-2、IEC 61000-4-5）的整体保护方案进行验证。
- 在高温、潮湿或频繁冲击的环境下，建议进行加速寿命与循环冲击测试以确认长期可靠性。
SP3401-02UTG 以其面向 3.3V 系统的工作点、合理的钳位特性与小型封装，适合对空间与保护性能都有要求的现代电子产品防护设计。若需更详细的电气特性曲线、典型响应波形或封装引脚图，请参考 Littelfuse 官方数据手册以完成最终设计验证。
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