WMSIC Electronic Components

UMW UDD32C03L01

ModelUDD32C03L01
PackageSOD-323
BrandUMW
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW UDD32C03L01
Type
UMW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
UDD32C03L01
Electronic Component
1
Package
SOD-323
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.036g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.8pF
Electronic Component
BM0230945374
Operating Temperature
55℃~+150℃
Voltage
7V
Electronic Component
IEC 61000-4-2
Current(Ir)
5uA

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

UDD32C03L01 产品概述

一、产品简介

UDD32C03L01 是友台半导体(UMW)推出的一款单路单向瞬态抑制二极管(TVS),采用紧凑的 SOD-323 封装,专为 3.3V 工况下的瞬态过压与静电放电(ESD)保护而设计。器件具有低结电容(Cj=0.8pF)、低泄漏电流与较高的峰值脉冲能力,适合对信号完整性有较高要求的高速接口保护。

二、主要规格参数

  • 反向截止电压(Vrwm):3.3V(工作耐压,适配 3.3V 线路)
  • 击穿电压(Vbr):4V
  • 钳位电压:7V(在规定脉冲条件下的典型钳位)
  • 峰值脉冲电流(Ipp):19A
  • 峰值脉冲功率(Ppp):350W
  • 反向电流(Ir):5 μA(常温)
  • 结电容(Cj):0.8 pF(低电容,利于高速信号)
  • 通道数:单路(单通道保护)
  • 工作温度范围:-55℃ ~ +150℃
  • 防护等级:符合 IEC 61000-4-2 静电放电抗扰度要求
  • 封装:SOD-323(表面贴装)

三、关键特性与优势

  1. 低结电容(0.8 pF):对高速数据线(如 3.3V 串行/并行接口、USB2.0、差分对)干扰小,保持信号完整性。
  2. 高峰值能力:19A 峰值脉冲电流与 350W 峰值脉冲功率,可应对较大能量瞬态脉冲。
  3. 低泄漏电流:5 μA 的低反向漏电有助于降低静态功耗,适用于低功耗系统。
  4. 宽温度工作范围:-55℃~+150℃,适合工业级应用。
  5. 小型封装:SOD-323 占板面积小,适用于空间受限的便携或密集布线电路板。

四、典型应用场景

  • 3.3V 电源线路与保护(对单端信号的保护优选单向 TVS)
  • 高速数据接口保护(如 USB2.0、串口、I2C/SPI 的线路终端)
  • 通信设备、工业控制、车载电子(在符合其温度与可靠性要求下)
  • 模块化电路、消费电子、便携设备中对单通道静电与浪涌防护

五、PCB 布局与使用建议

  • 将 TVS 尽量靠近被保护引脚(输入/输出引脚)放置,连接线尽量短且直,减少寄生电感。
  • 地线应采用低阻抗回流路径,建议在保护元件下增设短距离的多层地铜或打孔过孔,确保冲击电流能迅速返回地。
  • 对高速差分线路,如需更佳匹配,可配合串联阻抗(小阻值)或阻抗控制布局来降低反射。
  • 在选择 TVS 与系统接地时,注意避免将敏感模拟地与保护地直接连接到大电流回流路径上,以免干扰敏感电路。

六、选型要点与注意事项

  • 确认 Vrwm 与系统工作电压匹配(本型号 Vrwm=3.3V,适用于 3.3V 线路)。
  • 检查钳位电压与被保护器件的耐压关系,确保在脉冲发生时被保护器件不会因钳位电压而损坏。
  • 关注结电容对信号带宽的影响,0.8pF 适合大多数高速应用,但对极高带宽场景仍需评估。
  • 对于重复或长时间脉冲,应评估器件的热稳定性与系统的散热条件,避免超出峰值功率或造成发热问题。
  • 遵循生产厂家的焊接与存储说明,确保 SOD-323 在回流焊工艺下的可靠性。

七、封装与可靠性

SOD-323 小型表贴封装利于高密度贴片和自动化生产;同时器件支持较宽温度范围与工业级环境。实际应用时建议参考厂方完整的器件数据手册、脉冲曲线和焊接规范,以获得最佳可靠性表现。

总结:UDD32C03L01 以其针对 3.3V 系统优化的电压参数、低结电容与较高的瞬态承受能力,适合用于需要兼顾信号完整性和可靠过压保护的场合,是保护单路高速信号或电源线上常用的经济、性能均衡的 TVS 方案。

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