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Leiditech PESD3V3L1BA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
13
specifications
Core information
- Product name
- Leiditech PESD3V3L1BA
- Type
- LEIDITECH
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LEIDITECH
- Electronic Component
- PESD3V3L1BA
- Electronic Component
- 1
- Package
- SOD-323
- Electronic Component
- 0.024g
- Electronic Component
- 1
- Electronic Component
- BM0265793022
- 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.
PESD3V3L1BA ESD防护二极管产品概述
一、产品定位与典型应用场景
PESD3V3L1BA是雷卯电子（Leiditech） 推出的一款3.3V供电系统专用ESD防护二极管，属于瞬态电压抑制（TVS）类器件，核心作用是泄放静电放电（ESD）、电快速瞬变脉冲群（EFT）及浪涌（Surge）等瞬态干扰，避免敏感电子电路因过压损坏。
该器件的典型应用场景包括：
- 物联网终端：温湿度传感器、环境监测节点的信号接口（如I2C、SPI）；
- 消费电子：智能穿戴、手机/平板的按键、充电接口及低速数据接口；
- 工业控制：PLC模块的数字输入输出口、现场总线（如Modbus）接口；
- 车载电子：低功耗车载传感器（如胎压监测TPMS）的信号线路。
二、关键电气参数解析
器件的核心参数围绕“3.3V系统适配+瞬态防护”设计，各参数的实际意义如下：
参数 数值 实际意义 反向截止电压（Vrwm） 3.3V 与3.3V系统供电电压匹配，正常工作时反向截止，不影响电路信号传输与功耗 击穿电压（Vbr） 4.8V 比Vrwm高1.5V，避免3.3V±10%的电压波动导致误击穿，仅瞬态干扰时导通防护 峰值脉冲功率（Ppp） 350W@8/20μs 8/20μs为IEC浪涌标准波形，可承受最大350W浪涌功率，满足常见浪涌防护需求 钳位电压 7V/16V 分别对应ESD（7V）和浪涌（16V）脉冲下的钳位值，越低则后级电路防护效果越好 反向漏电流（Ir） 200μA Vrwm下漏电流极小，不增加系统额外功耗 结电容（Cj） 200pF 适合低速接口（≤1Mbps，如UART、I2C），高速接口需结合速率评估 工作温度范围 -55℃~+125℃ 工业级温度标准，适应极端环境（如高温工业现场、低温户外监测）三、封装与可靠性设计
1. 小型化封装
采用SOD-323表面贴装封装，尺寸仅2.0mm×1.2mm×1.0mm，节省PCB空间，适合高密度电路设计（如智能穿戴、小型传感器模块）。
2. 可靠性保障
- 工业级温度范围：通过-55℃~+125℃高低温存储、温度循环测试，长期工作稳定性可靠；
- 抗干扰设计：器件内部采用低阻抗结构，瞬态干扰泄放速度快，响应时间≤1ns（ESD防护关键指标）。
四、防护性能认证
器件通过三项核心电磁兼容（EMC）防护标准，覆盖常见瞬态干扰场景：
- IEC 61000-4-2（ESD）：可承受接触放电±8kV、空气放电±15kV（行业主流防护等级）；
- IEC 61000-4-4（EFT）：应对±2kV/5kHz的电快速瞬变脉冲群干扰；
- IEC 61000-4-5（浪涌）：支持±2kV（线对地）、±1kV（线间）的浪涌冲击。
五、应用选型注意事项
- 电压匹配：仅适用于3.3V直流供电系统，若系统为5V/12V需选择对应Vrwm的器件（如雷卯PESD5V0L1BA）；
- 接口速率：200pF结电容适合低速接口（≤1Mbps），高速接口（如USB 3.0、HDMI）需选低结电容器件（Cj≤10pF）；
- 环境适配：若应用环境温度超出-55~+125℃，需选择宽温或更高温度等级的防护器件；
- 防护等级：若需更高浪涌防护（如≥1.5kV线间浪涌），需确认实际场景是否匹配350W峰值功率。
总结
PESD3V3L1BA是雷卯电子针对3.3V系统设计的高性价比ESD防护方案，兼具小型化、工业级可靠性、多标准防护三大优势，覆盖物联网、工业控制、消费电子等多领域应用，是3.3V供电敏感电路的常用防护器件。
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