WMSIC Electronic Components

MDD ESD3B5CM

ModelESD3B5CM
PackageSOD-323
BrandMDD
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
MDD ESD3B5CM
Type
MDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MDD
Electronic Component
ESD3B5CM
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.028g
Electronic Component
1
Cj- Capacitor
33pF
Electronic Component
BM0265676072
Operating Temperature
55℃~+150℃
Voltage
20V
Electronic Component
IEC 61000-4-2;IEC 61000-4-4
Current(Ir)
1uA

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

ESD3B5CM 单向ESD防护二极管产品概述

一、产品定位与核心功能

ESD3B5CM是MDD品牌推出的单向静电放电(ESD)防护二极管,采用SOD-323小型表面贴装封装,核心作用是为电子设备的敏感电路提供静电及瞬态过压防护。该器件严格遵循IEC 61000-4-2(ESD)、IEC 61000-4-4(电快速瞬变脉冲群EFT)国际防护标准,可有效抵御人体接触放电(最高8kV)、空气放电(最高15kV)及电网瞬态干扰,保护后端MCU、传感器、通信接口等元件不受过压损坏,是消费电子、工业控制等领域的高性价比防护方案。

二、关键参数深度解析

ESD3B5CM的核心参数针对不同应用场景做了精准设计,关键参数及实际意义如下:

  1. 极性与工作耐压:单向极性,反向截止电压(Vrwm)=5V——正常工作时,反向施加的直流/交流电压不超过5V时,二极管处于截止状态,仅存在1uA的极低反向漏电流,不影响电路正常供电或信号传输。
  2. 脉冲钳位能力:峰值脉冲电流(Ipp)=25A,峰值脉冲功率(Ppp)=500W,对应钳位电压(Vclamp)=20V(由Ppp=Vclamp×Ipp推导)——遭遇静电或瞬态脉冲时,二极管快速击穿并将电压钳位在20V以内,避免后端元件因过压击穿或烧毁。
  3. 击穿与结电容:反向击穿电压(Vbr)=7.8V(典型值),结电容(Cj)=33pF——击穿电压略高于工作耐压,确保正常工作不导通;33pF结电容适用于中等速率信号(如10Mbps以下数字信号、5V电源端口),兼顾防护性能与信号完整性(若应用于高速信号需结合阻抗匹配,但可覆盖绝大多数低速场景)。
  4. 低漏电流:反向电流(Ir)=1uA——极低漏电流保证低功耗设备(如智能穿戴、物联网传感器)的待机时长不受额外功率消耗影响。

三、封装与环境适应性

  1. 小型化封装:采用SOD-323表面贴装封装,尺寸仅1.6mm×0.8mm×0.6mm,重量轻、占用空间极小,完美适配手机、智能手表等紧凑终端的内部布局,不影响设备小型化设计。
  2. 宽温工作范围:工作温度覆盖-55℃~+150℃,可适应工业级环境(如车间高温、户外低温)及部分车载低功耗场景(如车载USB接口防护),可靠性不受极端温度影响。
  3. 环保与焊接可靠性:无铅封装符合RoHS标准,兼容回流焊、波峰焊等批量生产工艺,焊接后焊点强度高,长期使用无脱焊、失效风险。

四、主要应用领域

ESD3B5CM凭借紧凑封装、宽温适应性及防护性能,广泛应用于以下场景:

  1. 消费电子终端:手机、平板、智能手表的充电接口(Type-C/Micro-USB)、耳机接口、SIM卡槽的ESD防护,满足用户日常插拔时的静电防护需求。
  2. 工业控制设备:PLC输入输出模块、工业传感器(温度/压力传感器)、现场总线接口的ESD+EFT防护,抵御工业现场的瞬态干扰,保障设备稳定运行。
  3. 通信接入设备:家用路由器、交换机的以太网端口、Wi-Fi天线接口的瞬态干扰防护,避免电网脉冲对通信信号的干扰。
  4. 低功耗物联网:智能门锁、环境监测传感器的电源端口防护,适配3.3V/5V供电模块,不增加设备待机功耗。

五、品牌与可靠性保障

MDD作为专注半导体防护器件的品牌,ESD3B5CM具备以下可靠性优势:

  1. 标准符合性:产品通过IEC 61000-4-2/4-4认证,可直接满足客户电磁兼容性(EMC)测试需求,无需额外整改。
  2. 参数一致性:批量生产中关键参数(击穿电压、结电容)偏差小,不同批次防护性能稳定,适合大规模量产应用。
  3. 全流程质量管控:从晶圆制造到封装测试全流程严格管控,产品失效率低,可保障设备长期稳定运行(典型使用寿命超过10年)。

综上,ESD3B5CM是一款兼顾小型化、宽温适应性与防护性能的高性价比ESD二极管,可满足消费电子、工业控制等多领域的静电及瞬态过压防护需求。

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