WMSIC Electronic Components

Prisemi PESDNC3D5VB

ModelPESDNC3D5VB
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Prisemi PESDNC3D5VB
Type
PRISEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PRISEMI
Electronic Component
PESDNC3D5VB
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
85pF
Electronic Component
BM0257326165
Voltage
23V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
1uA

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

PESDNC3D5VB 产品概述

一、产品简介

PESDNC3D5VB 是 Prisemi(芯导)推出的一款双向瞬态电压抑制器(TVS/ESD),封装为 SOD-323,面向 5V 等电源与信号线的静电与浪涌保护应用。器件为单路保护,符合 IEC 61000-4-2(静电放电)和 IEC 61000-4-4(电快速瞬变)标准,适合接口端、通信口及系统外部连线的保护需求。

二、主要电气参数

  • 反向截止电压(Vrwm):5V,适用于 5V 系统的工作电压保护
  • 击穿电压(VBR):典型 8V,确保在浪涌来临时可靠进入钳位状态
  • 钳位电压:约 23V(在 8/20µs 峰值条件下),限制过电压对下游器件的冲击
  • 峰值脉冲功率(Ppp):350W @ 8/20µs,能承受短时高能量浪涌
  • 反向漏电流(Ir):1µA(静态低漏),利于低功耗系统
  • 结电容(Cj):85pF,需注意对高速信号的带宽影响

三、特点与优势

  • 双向结构:可在正负极性瞬态下双向钳位,适合无偏或双向信号线保护
  • 小型封装:SOD-323 体积小,便于密集 PCB 布局与自动化贴装
  • 高能量吸收:350W 峰值能力满足常见电源浪涌与雷击次级冲击
  • 低漏电与稳定击穿:对 5V 系统友好,避免正常工作时的额外功耗与误触发

四、典型应用场景

  • USB、UART、I2C、CAN 等接口保护
  • 5V 电源线的瞬态抑制(短时浪涌防护)
  • 手机配件、消费电子、小型通信设备接口防护
  • 工业控制器的外部端口与信号线保护

五、布局与使用建议

  • 置于接口近端:将器件尽量靠近外部连接器或信号源放置,短而粗的走线可降低串联感抗与环路面积
  • 串联阻抗配合:对高速或对容量敏感信号,考虑增加小阻值串联或选择低 Cj 器件以减少信号失真
  • 热与功率注意:虽然能量吸收能力强,但不适合频繁大能量脉冲,必要时在系统级进行分流或使用更高功率器件
  • PCB 走线:避免在保护器与被保护节点间布置长狭窄走线,确保接地回流路径短且低阻

六、使用限制与注意事项

  • 结电容 85pF 在高带宽差分或射频应用中可能引入幅度/上升时间变化,应评估信号完整性影响
  • 非持续工作:TVS 设计用于瞬态事件,非连续或长期过压会损伤器件
  • 检查系统浪涌级别:对于更高能量的雷击或电网故障需配合其他防护元件(如气体放电管、熔断器)

结语:PESDNC3D5VB 在小型封装中提供可靠的双向 ESD/浪涌保护,适合多种 5V 接口和外部连线的瞬态防护场景。选型时结合系统的速度、容忍电容与浪涌能量需求,按上述布局与使用建议设计,可获得良好的保护效果。

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