WMSIC Electronic Components

CJ CESD3V3D5

ModelCESD3V3D5
PackageSOD-523
BrandCJ
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
CJ CESD3V3D5
Type
CJ
Minimum package
8000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CESD3V3D5
Electronic Component
1
Package
SOD-523
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.011g
Electronic Component
1
Cj- Capacitor
120pF
Electronic Component
BM0227330800
Voltage
13V
Electronic Component
IEC 61000-4-2
Current(Ir)
80nA
Voltage(VBR)
5V

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

CESD3V3D5 TVS二极管产品概述

一、产品简介

CESD3V3D5 是江苏长电(CJ/长晶)推出的一款单向瞬态电压抑制(TVS)二极管,封装为 SOD-523,小型贴片设计,专为 3.3V 系统的静电放电(ESD)和浪涌保护而设计。器件符合 IEC 61000-4-2 电磁放电防护标准,适用于移动终端、通信接口、消费电子和工业控制等对空间和可靠性有要求的场合。

二、主要电气参数

  • 钳位电压(Vc,典型):13 V(在 8/20 µs 浪涌下)
  • 击穿电压(Vbr):5 V(典型)
  • 反向截止电压 / 反向工作电压(Vrwm):3.3 V
  • 峰值脉冲功率(Ppp):210 W @ 8/20 µs
  • 峰值脉冲电流(Ipp):16 A(对应钳位电压下)
  • 结电容(Cj):约 120 pF(典型)
  • 反向漏电流(Ir):≤ 80 nA(在 Vrwm 下)
  • 极性:单向(推荐用于有固定参考地的线路)
  • 类型:ESD/浪涌保护

三、性能特点

  • 高频响应快,能在纳秒级别吸收静电脉冲,保护敏感器件免受瞬态过压损害。
  • 高峰值功率吸收能力(210 W @ 8/20 µs),可处理短时较大能量脉冲。
  • 低反向漏电流(≤80 nA),对低功耗电路影响小。
  • 小型 SOD-523 封装,占板面积小,适合空间受限的便携设备。
  • 结电容约 120 pF,适合低速/中速信号线保护;对超高速差分线需评估影响。

四、典型应用场景

  • 3.3V 电源轨的浪涌与静电保护。
  • GPIO、UART、SPI、I2C 等低/中速数字信号接口的过压保护。
  • 手机、平板、可穿戴设备、物联网终端等便携设备外部接口防护。
  • 工业控制模块、传感器接口及其它需要符合 IEC 61000-4-2 的应用场合。

五、设计与布局建议

  • 尽量将 TVS 器件靠近被保护的引脚放置,使引脚到器件的走线最短、最粗,以降低感抗和延迟。
  • 保护端(线侧)接到器件的标称极性端(单向器件的阳极/阴极方向应按数据手册安装),另一端可靠接地(或系统参考地)。
  • 使用完整的地平面并在必要处布设回流通道,减小回路阻抗以获得更好钳位性能。
  • 考虑结电容约 120 pF 对信号完整性的影响,若用于高速接口需评估抖动和带宽损失,必要时选择低电容产品或在前端增加滤波/缓冲电路。
  • TVS 为瞬态保护器件,不适合作为连续电流承载元件;大电流或频繁浪涌场合需配合熔断器或限流元件。

六、选型与使用要点

  • 若系统工作电压稳定在 3.3 V 且需抗静电与短时浪涌,CESD3V3D5 是紧凑且成本有效的选择。
  • 对于高速差分信号(如 USB3.0、PCIe 等),应优先考虑低电容 TVS 器件;若工作在低速/控制信号线,则本器件更为合适。
  • 参考实际浪涌环境选择是否需要更高能量等级或并联/串联保护方案,阅读器件数据手册以获取详细的典型曲线与极限参数。

如需完整的电气特性曲线、封装尺寸或推荐焊接工艺,可告知,我将提供相应的数据手册要点与布局示意。

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