WMSIC Electronic Components

Brightking UDT14A05L03

ModelUDT14A05L03
PackageSOT-143
BrandBrightking
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
Brightking UDT14A05L03
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
UDT14A05L03
Electronic Component
1
Package
SOT-143
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.049g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
1.5pF
Electronic Component
BM0257505071
Voltage
25V
Electronic Component
IEC 61000-4-2
Current(Ir)
5uA
Voltage(VBR)
6V

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

UDT14A05L03 ESD二极管产品概述

一、产品简介

UDT14A05L03 是台湾君耀(Brightking)推出的一款双路低容抗ESD二极管,封装为 SOT-143。器件针对5V类接口提供瞬态浪涌保护,符合 IEC 61000-4-2 静电放电防护要求。器件耐受峰值脉冲电流 Ipp 为 12A(8/20μs),具有低结电容和低漏电流的特点,适用于需要高速信号完整性与可靠防护并存的场合。

二、主要参数(典型/额定)

  • 反向截止电压(Vrwm):5V,适用于 5V 电平线路
  • 击穿电压(Vbr):6V
  • 钳位电压(Vc):25V(在指定脉冲条件下)
  • 峰值脉冲电流(Ipp):12A @ 8/20μs
  • 反向电流(Ir):5μA(在 Vrwm 条件下)
  • 结电容(Cj):1.5pF(低容值,利于高速接口)
  • 通道数:双路(双通道独立保护)
  • 封装:SOT-143
  • 类型:ESD 保护器件,品牌:Brightking(台湾君耀)

三、产品特点

  • 低电容:1.5pF 的结电容对 USB、HDMI、MIPI 等高速数据线影响小,保证信号完整性。
  • 高抗冲击能力:12A(8/20μs)峰值脉冲能力,可吸收常见静电与浪涌能量。
  • 低漏电流:5μA 反向电流有利于低功耗或待机电路应用。
  • 紧凑封装:SOT-143 小尺寸便于空间受限的移动设备与模块化设计。
  • 双路保护:同一封装内两路独立保护,简化布局与成本。

四、典型应用场景

  • USB 和 USB OTG 接口保护
  • 手机、平板等移动终端的数据/按键接口
  • 摄像头模组、显示驱动接口(MIPI/DSI)
  • HDMI、DP 辅助线路与控制信号保护
  • 工业与物联网终端的接口防护

五、使用与布局建议

  • 尽量将 UDT14A05L03 放置在被保护引脚与接地之间的最短路径上,靠近外部连接器以减少走线感应电感。
  • 采用多层 PCB 时,为器件接地端增加过孔,减少回流路径电阻与电感,提升钳位效果。
  • 对高速差分信号,注意器件与线对的匹配,必要时在每条线上各自布置保护或在差分对两端对称保护。
  • 可与小阻值串联电阻配合使用以进一步降低瞬态电压峰值,但需注意对信号速率的影响。

六、选型要点

  • 若保护对象为 5V 电平信号,Vrwm=5V 为合理选择;对 3.3V 系统可考虑更低 Vrwm 器件以获得更低钳位。
  • 对高速信号应优先选用低 Cj(本器件为 1.5pF),以保证眼图与时序完整性。
  • 关注 Ipp 与钳位电压之间的匹配:更高能量的冲击需要更高 Ipp 能力或并联保护方案。
  • 检查器件对 IEC 61000-4-2 的认证与对应测试等级,确保满足最终产品的 EMC 要求。

七、封装与订购信息

  • 封装形式:SOT-143,适合自动贴装(SMT)。
  • 型号:UDT14A05L03,品牌:Brightking(台湾君耀)。
  • 订购时请确认批次、管脚定义与相关质量认证(RoHS/REACH 等,若需请向供应商确认)。

该器件以其低容、高抗冲击和小封装优势,适合现代便携与高速接口的ESD防护应用。在实际设计中,结合 PCB 布局与系统浪涌策略,可以有效提升接口可靠性并减少误触发风险。

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