WMSIC Electronic Components

Prisemi PESDHC3D3V3U

ModelPESDHC3D3V3U
PackageSOD-323
BrandPRISEMI
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
Prisemi PESDHC3D3V3U
Type
PRISEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PRISEMI
Electronic Component
PESDHC3D3V3U
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Cj- Capacitor
280pF
Electronic Component
BM0226527434
Voltage
6.5V;9V;7.4V
Current(Ir)
1uA
Voltage(VBR)
5V
Electronic Component
Electronic Component

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

PESDHC3D3V3U 产品概述

一、产品简介

PESDHC3D3V3U 是 Prisemi(芯导)推出的一款单向瞬态抑制二极管(TVS),封装为 SOD-323,专为 3.3V 供电/信号线的静电放电与浪涌保护设计。器件在反向静态条件下的额定反向截止电压(Vrwm)为 3.3V,击穿电压 V(BR) 约为 5V,可作为 3.3V 系统的前端保护元件。

二、主要电气参数

  • 类型:单向 TVS
  • 反向截止电压(Vrwm):3.3V
  • 击穿电压:5V
  • 峰值脉冲电流(Ipp):15A @ 8/20μs
  • 峰值脉冲功率(Ppp):280W @ 8/20μs
  • 钳位电压(8/20μs,下同):最小 6.5V、典型 7.4V、最大 9V
  • 反向漏电流(Ir):1 μA
  • 结电容(Cj):280 pF

三、功能与优势

PESDHC3D3V3U 可在大能量瞬态(如静电放电或电源浪涌)发生时迅速导通,将瞬态能量钳位到安全电压范围,从而保护后端敏感器件。小封装(SOD-323)适合空间受限的便携设备和高密度板级设计。低漏电流保证在正常工作状态下对电路影响极小;较高的 Ipp 与 Ppp 使其能抵御常见的 8/20μs 浪涌冲击。

四、典型应用场景

适用于 3.3V 的接口与电源防护,如 MCU/FPGA I/O 端口、串行接口、传感器信号输入、射频前端保护、移动设备与物联网终端等。需注意:280 pF 的结电容在一些超高速或高频差分信号线上可能影响信号完整性,应在选型时评估对带宽的影响。

五、封装与布局建议

SOD-323 封装便于自动贴装;推荐将 TVS 器件靠近被保护的外部接口或连接器放置,缩短走线长度以降低寄生电感。器件的阴极应接地或接公共参考地,增加回流地铜箔与过孔以改善散热与大电流回流路径。避免将 TVS 用作持续导通器件,仅用于瞬态抑制。

六、使用注意事项

  • 不建议在超过 Vrwm 长期正向或反向偏压下工作;此器件用于瞬态保护,不作稳压器使用。
  • 在对高速信号保护时,评估 280 pF 对信号的加载效果;必要时选用低容抗 TVS 方案。
  • PCB 走线与地平面的设计直接影响保护效果,务必采用短回路与宽地连接。

PESDHC3D3V3U 为 3.3V 系统提供了在小尺寸封装下具备高能量吸收能力的瞬态保护选择,适合追求空间效率且需可靠防护的电子产品设计。有关更详细的电气特性、机械尺寸与封装信息,请参阅官方器件数据手册。

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