WMSIC Electronic Components

LRC LESD11D3.3CT5G

ModelLESD11D3.3CT5G
PackageDFN0603-2L
BrandLRC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LRC LESD11D3.3CT5G
Type
LRC
Minimum package
15000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
LESD11D3.3CT5G
Electronic Component
1
Package
DFN0603-2L
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.007g
Electronic Component
1
Cj- Capacitor
16pF
Electronic Component
BM0230041532
Voltage
10V
Electronic Component
IEC 61000-4-2
Current(Ir)
100nA
Voltage(VBR)
6.5V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

LESD11D3.3CT5G 产品概述

一、产品简介

LESD11D3.3CT5G 是乐山无线电(LRC)推出的一款小型双向ESD保护二极管,专为3.3V工作电压的信号线、接口和器件提供瞬态过电压防护。器件采用DFN0603-2L超小封装,适合高密度布板与消费电子、通信、工业控制等领域的线路保护需求。

二、性能亮点

  • 双向保护,能有效抑制正负极性突发脉冲,保护两端对称电路。
  • 反向截止电压(Vrwm)3.3V,针对3.3V常用电平优化。
  • 峰值脉冲电流 Ipp = 6A,峰值脉冲功率 Ppp = 60W(按标准脉冲曲线计),能承受典型人体放电与线路脉冲。
  • 钳位电压约 10V,击穿电压约 6.5V,在过压瞬态下将能量限制在可接受范围内。
  • 极低反向电流 Ir ≈ 100nA,减少漏电对电路稳定性的影响。
  • 结电容 Cj = 16pF,适用于大多数数据信号但对超高速差分对需评估影响。
  • 符合 IEC 61000-4-2 放电抗扰度要求,满足工业级ESD防护标准。

三、典型应用场景

  • USB、UART、I2C、SPI 等3.3V接口的ESD与浪涌保护。
  • 智能终端、可穿戴设备、物联网节点的接口防护。
  • 工业控制信号线、传感器接口以及需高密度布板的场景。

四、电气特性要点

  • 类型:ESD 二极管(双向)
  • 反向截止电压 Vrwm:3.3V
  • 击穿电压:6.5V(典型)
  • 钳位电压:10V(典型)
  • 峰值脉冲电流 Ipp:6A
  • 峰值脉冲功率 Ppp:60W
  • 反向电流 Ir:100nA
  • 结电容 Cj:16pF
  • 防护等级:符合 IEC 61000-4-2

备注:钳位电压与峰值功率/电流相关,实际保护性能受波形、脉冲宽度与电路阻抗影响,设计时请参考器件曲线。

五、封装与PCB布局建议

  • 封装:DFN0603-2L,尺寸小,便于贴片装配。
  • 布局要点:保护器件应尽量靠近受保护的接口或管脚放置,焊盘与走线长度最短;对地型设计要保证低阻抗回流路径,必要时在器件附近增加过孔联通地层以提升散热与吸收能量能力。
  • 对于敏感高速信号,评估16pF电容带来的带宽影响,必要时选用更低电容的器件或在协议可接受范围内布局。

六、可靠性与设计注意事项

  • 器件通过 IEC 61000-4-2 等级测试,但重复冲击与过热会影响寿命;设计中应结合限流电阻或差分网络分担能量。
  • 双向器件在带有直流偏置的线路上会有额外影响,确认线路偏置与Vrwm匹配。
  • 在低电压敏感应用(例如模拟前端)中,钳位电压10V可能仍然较高,应考虑串联限流或更低钳位器件。

七、选型建议与结论

LESD11D3.3CT5G 适合在3.3V数字接口和一般信号线中提供可靠的瞬态抑制,封装小、功率承受能力适中、结电容在多数应用中可接受。选型时请结合实际脉冲能量、带宽需求及系统容忍电压,必要时通过样品验证钳位行为与带宽影响,以确保系统长期稳定运行。

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