WMSIC Electronic Components

Prisemi PTVSHC3N18VU

ModelPTVSHC3N18VU
PackageDFN-3(2x2)
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 PTVSHC3N18VU
Type
PRISEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PRISEMI
Electronic Component
PTVSHC3N18VU
Electronic Component
1
Package
DFN-3(2x2)
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.032g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
900pF
Electronic Component
BM0265166886
Voltage
33V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
20V

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

PTVSHC3N18VU 产品概述

一、产品定位与核心属性

PTVSHC3N18VU是芯导(Prisemi)推出的单路瞬态抑制二极管(TVS),专为小型化电子设备的静电(ESD)、电快速瞬变脉冲群(EFT)及浪涌(Surge)防护设计。其采用紧凑的DFN-3(2×2mm)封装,兼具高防护能力与空间节省特性,适用于对体积敏感的消费电子、物联网终端等场景,是低功耗设备瞬态干扰防护的高性价比选择。

二、关键电性能参数解析

该器件的核心电参数围绕“正常工作无干扰、异常冲击快速防护”设计,关键指标及实际意义如下:

  • 反向截止电压(Vrwm=18V):正常工作时反向偏置保持截止,漏电流仅1uA,不会对电路供电或信号传输造成损耗,适配12V/18V典型电源系统;
  • 击穿电压(20V):瞬态过压触发阈值比Vrwm高2V,避免电路波动导致的误触发,确保防护机制精准启动;
  • 钳位电压(33V):浪涌冲击时可将电路电压钳位至33V以内,远低于MCU、传感器等敏感器件的耐压极限(通常≤50V),有效防止击穿损坏;
  • 脉冲防护能力:峰值脉冲电流(Ipp=138A@8/20μs)与峰值脉冲功率(Ppp=4kW@8/20μs),可应对典型浪涌(如雷击、电源开关瞬态)及大电流冲击,重复防护无失效风险;
  • 结电容(Cj=900pF):适配电源线路、低速信号(音频、传感器数据)防护需求,不会因容值过大影响信号完整性(若需高频信号防护,可搭配低容TVS并联)。

三、防护标准与实际场景覆盖

PTVSHC3N18VU通过三大核心电磁兼容(EMC)标准测试,全面覆盖电子设备的典型瞬态干扰场景:

  • IEC 61000-4-2(ESD):应对人体接触放电(±15kV接触/±8kV空气)及设备间放电,保护充电口、耳机孔等外露接口;
  • IEC 61000-4-4(EFT):抑制继电器、电机启停产生的快速脉冲群,避免电路误触发(如传感器误报、MCU重启);
  • IEC 61000-4-5(Surge):抵御雷击、电网切换浪涌,防护等级满足消费电子及工业轻载场景(如小型智能家居设备)需求。

四、封装与应用场景

4.1 封装特性

DFN-3(2×2mm)无引脚扁平封装具备三大优势:

  • 体积极小:仅为传统SOT-23封装的1/3,适配便携式设备高密度PCB设计;
  • 散热优异:低热阻设计,瞬态冲击后快速散热,可重复防护;
  • 工艺兼容:3脚设计兼容自动贴装,焊接简单,降低生产难度。

4.2 典型应用场景

  1. 便携式电子:手机、无线耳机、智能手表的充电端口、电源输入防护;
  2. 物联网终端:温湿度传感器、门禁读卡器、智能门锁的电源及信号接口防护;
  3. 小型消费电子:蓝牙音箱、耳机孔、USB-A接口的浪涌/ESD防护;
  4. 低功率电源:5V/12V小功率电源模块的输入浪涌抑制,保护后端DC-DC转换器。

五、产品优势总结

PTVSHC3N18VU的核心竞争力在于**“小体积+全防护+高可靠性”**:

  • 紧凑封装适配消费电子小型化趋势,无需额外空间优化;
  • 单路通道针对性强,避免多通道冗余成本,适合单电源/单信号防护;
  • 覆盖三大EMC标准,防护场景全面,降低设备售后故障率;
  • 低漏电流不影响电路效率,高脉冲能力应对极端冲击,延长设备寿命。

该器件可直接替换同类小封装TVS,无需修改PCB设计,是快速实现瞬态防护的优选方案。

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