WMSIC Electronic Components

BOURNS CDSOD323-T05

ModelCDSOD323-T05
PackageSOD-323
BrandBOURNS
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
BOURNS CDSOD323-T05
Type
BOURNS
Unit
Electronic Component
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
CDSOD323-T05
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.043g
Electronic Component
1
Cj- Capacitor
3pF
Electronic Component
BM0264528770
Operating Temperature
55℃~+150℃
Voltage
18.3V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2

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

CDSOD323-T05 产品概述

一、产品简介

CDSOD323-T05 是 BOURNS 推出的一款单向 TVS 二极管,采用 SOD-323 小型封装,专为 5V 工况下的瞬态过压与静电放电保护设计。该器件在正常工作时处于反向偏置,遇到尖峰脉冲时能迅速钳位电压并吸收能量,从而保护下游电路器件免受损害。器件封装紧凑、结电容低、温度范围宽,适合空间受限且需高可靠性防护的电子产品。

二、主要电气参数

  • 极性:单向
  • 反向稳压 Vrwm:5 V(反向工作电压)
  • 击穿电压(典型):6 V
  • 钳位电压 Vc(Ipp 条件下):18.3 V
  • 峰值脉冲电流 Ipp:17 A @ 8/20 μs
  • 峰值脉冲功率 Ppp:350 W
  • 反向漏电流 Ir:2 μA
  • 结电容 Cj:3 pF
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 封装:SOD-323(小尺寸表面贴装)
  • 类型/用途:TVS 二极管(瞬态抑制)
  • 防护等级标准:符合 IEC 61000-4-2、IEC 61000-4-4、IEC 61000-4-5

三、关键特性

  • 小型封装:SOD-323 适用于空间受限的 PCB 布局,可实现靠近接口或电源点的紧凑布局。
  • 低结电容:3 pF 的极低结电容对高速信号线影响小,利于保护同时保持信号完整性,适用于对电容敏感的接口。
  • 强抗冲击能量:在 8/20 μs 浪涌条件下可承受 17 A 峰值脉冲电流,Ppp 高达 350 W,能有效吸收瞬态高能脉冲。
  • 低漏电流:2 μA 的反向漏电流可最大限度减少静态功耗,适合电源敏感系统。
  • 宽工作温度:-55 ~ +150 ℃ 的耐温范围满足工业及汽车等应用环境(按器件规格范围使用)。

四、典型应用场景

  • 5V 电源线保护(如 USB、5V MCU 电源总线)
  • 数据接口及通信端口的瞬态防护(得益于低结电容,适合 USB、UART、I2C 等高速或中速信号)
  • 工业控制设备、仪表、消费电子及通信设备的浪涌/ESD 防护
  • 需符合 IEC 61000 系列抗扰度要求的系统前端防护

五、安装与使用建议

  • 连接方式:单向 TVS 在正常工作时反向偏置,推荐将器件的阴极(K)接被保护电源线或信号线,阳极(A)接地。发生正向瞬态时器件导通将电流引入地。
  • 布局要点:将 TVS 靠近外部接口或引入点放置,走线短且宽以降低寄生感抗和阻抗,从而实现最佳钳位效果。
  • 串联元件配合:在某些系统中可配合合理的串联阻抗(如保险丝、限流电阻)以分摊能量并避免器件反复承受超额冲击。
  • 温升与散热:在高能量冲击场景下,注意器件及周边的散热能力,避免重复大功率脉冲导致热应力。
  • 验证测试:在设计验证阶段建议按系统实际耦合方式进行 ESD、EFT 和浪涌测试,确认器件在所给环境下的保护效果。

六、可靠性与合规性

CDSOD323-T05 针对 IEC 61000-4-2(静电放电)、IEC 61000-4-4(快速瞬变脉冲群)和 IEC 61000-4-5(雷击浪涌)等国际抗扰度标准进行了设计匹配,适合需要通过相关抗扰度认证的产品使用。器件的额定温度范围与低漏电流特性也保证了在严苛环境下的长期可靠性。

七、总结

CDSOD323-T05 是一款为 5V 应用优化的单向 TVS 二极管,结合 SOD-323 小封装、低结电容(3 pF)、高峰值吸收能力(17 A @ 8/20 μs,350 W)和严格的 IEC 抗扰度兼容性,适用于对空间、信号完整性和抗瞬态能力有较高要求的电子系统。在实际应用中,通过合理的 PCB 布局与必要的配套限流措施,可为电源与信号线提供可靠的瞬态保护。若需进一步的封装尺寸、引脚图或典型波形数据,可参考 BOURNS 的器件数据手册以获得详细规范与测试条件。

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