WMSIC Electronic Components

Leiditech PUSB3FR4

ModelPUSB3FR4
PackageDFN2510-10
BrandLeiditech
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

19 specifications

Core information

Product name
Leiditech PUSB3FR4
Type
LEIDITECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LEIDITECH
Electronic Component
PUSB3FR4
Electronic Component
1
Package
DFN2510-10
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.007g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.35pF;0.7pF
Electronic Component
BM0264463889
Voltage
4V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
100nA
Voltage(VBR)
6V

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

PUSB3FR4 产品概述

一、产品简介

PUSB3FR4 是 Leiditech(雷卯电子)推出的一款四路低电容 ESD/浪涌保护器,专为高速数字视频与差分接口设计。工作电压低(Vrwm = 3.3V),钳位电压低(Vc ≈ 4V),能在不影响信号完整性的前提下为 HDMI 1.3/1.4、DisplayPort 和类似 USB/高速差分信号提供可靠的静电和浪涌保护。器件采用无铅 DFN2510-10 封装,适合自动化贴片生产。

二、主要电气参数

  • 反向截止电压 Vrwm:3.3V
  • 钳位电压(典型):4V
  • 峰值脉冲电流 Ipp:7A @ 8/20µs(单次脉冲)
  • 峰值脉冲功率 Ppp:28W @ 8/20µs
  • 击穿电压 VBR:6V
  • 反向泄漏电流 Ir:100nA(nA 级超低泄漏)
  • 通道数:4 路
  • 结电容 Cj:0.35pF(典型,单端对地);0.7pF(差分或最大典型值)
  • 防护等级:满足 IEC 61000-4-2(空气/接触放电 ±15kV)与 IEC 61000-4-5(浪涌)测试要求
  • 类型:ESD/浪涌保护器(TVS 类功能)

三、核心特性与优势

  • 超低泄漏:典型泄漏电流为 nA 级,保证长时间待机下对电路无明显偏置影响。
  • 低电容:0.35pF 起的结电容对高速差分信号影响极小,可保持信号上升时间和眼图完整性。
  • 低钳位:4V 钳位电压在保护同时降低对敏感接口的过压风险。
  • 高能量承受能力:7A/8/20µs 的脉冲电流与 28W 的瞬态功率,能吸收常见的静电放电与线路浪涌。
  • 四通道集成:单芯片可保护最多四条信号线,节省 PCB 面积并简化布局。
  • 工业级标准兼容:通过 IEC 61000-4-2 / 4-5 测试,满足严苛电磁兼容要求。

四、典型应用场景

  • HDMI 1.3 / 1.4 接口保护(TMDS 差分对)
  • DisplayPort 接口保护
  • 高速差分信号链路(USB3.x 的某些控制线或类似接口的低压信号保护)
  • 消费类电子(机顶盒、电视机、显示器)、笔记本和平板外设接口防护

五、封装与可靠性

  • 封装:DFN2510-10,表面贴装,紧凑型,适合高密度板设计。
  • 材料:无铅工艺,符合 RoHS 要求(可按客户要求出具相关合格证明)。
  • 环境与可靠性:设计满足工业环境的 ESD 与浪涌应答,长期工作在 3.3V 体系下稳定可靠。

六、PCB 布线与使用建议

  • 将 PUSB3FR4 放置在受保护接口与连接器之间,尽量靠近外部接口端口以最小化未受保护走线长度。
  • 对高速差分对保持对称布线,器件引脚到差分对引脚的走线应尽可能短且阻抗连续。
  • 在器件附近放置适当接地平面并通过多盲孔(via)与底层地相连,以提高浪涌能量分流与降低回路电感。
  • 对于敏感模拟或参考地,避免与大电流回流路径混合,建议单独布置地层并在必要处使用地回流孔。

七、典型电路与注意事项

  • 常见接法为:每一路信号线串联走向外部接口前,在信号线与地之间并联 PUSB3FR4 的对应通道。
  • 关注器件在钳位瞬时电压下对下游保护器件(如端口芯片、接收器)的应力,必要时与阻抗匹配或滤波器件配合使用。
  • 在高频或高速应用中,若发现高频损耗或信号完整性问题,可选用更低 Cj 或不同封装布局的器件做比较。

总结:PUSB3FR4 以极低的结电容与泄漏,配合低钳位电压和可靠的脉冲承受能力,为 3.3V 体系下的 HDMI/DisplayPort 等高速接口提供高效、紧凑的 ESD 与浪涌保护方案。若需进一步的封装图、引脚配置、典型波形或可靠性测试报告,可联系 Leiditech(雷卯电子)获取详细数据手册与样片支持。

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