WMSIC Electronic Components

DOWO PESD3V3S1UB

ModelPESD3V3S1UB
PackageSOD-523
BrandDOWO
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
DOWO PESD3V3S1UB
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
PESD3V3S1UB
Electronic Component
1
Package
SOD-523
Electronic Component
Electronic Component
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.016g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
100pF
Electronic Component
BM0264801997
Voltage
13V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
500nA

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

PESD3V3S1UB 产品概述

一、产品简介

PESD3V3S1UB 是 DOWO(东沃)推出的一款面向 3.3V 系统的双向单路瞬态抑制器(TVS 二极管),采用超小型 SOD-523 封装。器件专为保护敏感信号线和接口免受静电放电(ESD)、电快速瞬变(EFT)及浪涌(Surge)损害而设计,兼容多项工业级抗扰度标准,适合高密度、低功耗电子设备应用。

二、主要参数与特性

  • 极性:双向(可对称吸收正负极性脉冲)
  • 额定反向工作电压 Vrwm:3.3V
  • 击穿电压 VBR:3.7V
  • 钳位电压:13V(典型)
  • 峰值脉冲电流 Ipp:40A(8/20µs)
  • 峰值脉冲功率 Ppp:500W(8/20µs)
  • 反向静态电流 Ir:500 nA(典型)
  • 结电容 Cj:100 pF(典型)
  • 通道数:单路
  • 封装:SOD-523(超小体积)
  • 防护等级/标准:符合 IEC 61000-4-2、IEC 61000-4-4、IEC 61000-4-5

三、典型应用场景

  • 3.3V 单端/差分信号线路保护(UART、I2C、SPI、GPIO)
  • 移动终端、便携设备、可穿戴设备的数据/控制接口防护
  • 工业控制与通信模块的接口边界保护
  • PCB 高密度布局下的局部过压/ESD 抑制

四、封装与布局建议

SOD-523 封装体积小,适用于空间受限电路板。布局建议:保护器件应尽量靠近被保护引脚(靠近连接外部线路或接口),并保证引脚到接地面的低阻抗短回路路径;对于高能量浪涌,可配合串联阻抗(如微阻或磁珠)与低阻抗接地共同使用以降低钳位电压和吸收更多能量。

五、选型与设计注意

  • Cj = 100 pF,可能对高速信号(例如高带宽差分线)造成一定影响,选型时需评估信号完整性;低频或中断导通信号更适合。
  • 钳位电压 13V 在某些低压敏感电路可能偏高,若被保护器件耐压较低,需增加前置限流或选择钳位更低的器件。
  • 峰值吸收能力 40A(8/20µs)与 500W(8/20µs)适合典型工业级浪涌与 ESD 冲击,但对更高能量的雷击或长时间过压需配合其他防护措施。

六、可靠性与合规

器件通过 IEC 61000-4-2(ESD)、IEC 61000-4-4(EFT)、IEC 61000-4-5(浪涌)相关测试验证,适用于要求电磁兼容(EMC)保护的产品设计。SOD-523 封装便于自动贴片组装,适配常见回流焊工艺。

七、结论

PESD3V3S1UB 提供了面向 3.3V 系统的高效双向瞬变保护,适合对体积、成本和基本抗扰度有要求的电子产品。设计时应综合考虑结电容对信号的影响与钳位电平对被保护器件的耐压要求,必要时配合限流与分级防护以获得更稳健的系统可靠性。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.