WMSIC Electronic Components

DOWO SM8S30A

ModelSM8S30A
PackageDO-218AB
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 SM8S30A
Type
DOWO
Minimum package
750 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SM8S30A
Electronic Component
1
Package
DO-218AB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
3.7g
Electronic Component
1
Electronic Component
BM0264801942
Voltage
48.4V
Current(Ir)
10uA
Voltage(VBR)
33.3V
Electronic Component
Electronic Component
Electronic Component
750

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

SM8S30A瞬态抑制二极管(TVS)产品概述

一、产品核心定位与品牌背景

SM8S30A是国内电子防护器件品牌DOWO(东沃) 推出的一款单向瞬态抑制二极管(TVS),属于SM8S系列防护器件。该产品专为低压电子电路的瞬态过压防护设计,核心作用是快速抑制电路中的浪涌、静电放电(ESD)等瞬态干扰,避免敏感元器件因过压损坏,广泛适配消费电子、工业控制、通信等领域的低压电路防护需求。

二、关键电气参数详解

SM8S30A的电气参数经过严格测试,精准匹配低压电路的防护场景,核心参数及实际意义如下:

1. 极性与防护方向

产品为单向防护设计,仅针对电路中某一方向的瞬态过压进行抑制(如电源正极到地的浪涌),适配单向信号传输或电源线路的防护需求,避免双向防护带来的额外损耗。

2. 静态工作参数

  • 反向工作峰值电压(Vrwm):30V:正常工作状态下,器件反向截止,可承受的最大直流/交流峰值电压为30V,适配12V、24V等低压电源电路的长期稳定工作;
  • 反向漏电流(Ir):10μA:在Vrwm(30V)下,器件反向漏电流仅10μA,静态损耗极低,不会影响电路的正常功耗,尤其适合对功耗敏感的便携设备(如手机、平板);
  • 击穿电压(Vbr):33.3V:当电路电压超过击穿电压时,器件快速从高阻态切换为低阻态(响应时间达纳秒级),启动防护功能,避免过压持续上升。

3. 瞬态脉冲耐受能力

  • 钳位电压(Vc):48.4V:在峰值脉冲电流下,器件的最大钳位电压为48.4V,能将过压精准限制在安全范围内,保护后级MCU、传感器等敏感元件不被击穿;
  • 峰值脉冲电流(Ipp):136A:可承受的最大瞬态脉冲电流达136A,能有效应对插拔浪涌、静电放电等大电流干扰;
  • 峰值脉冲功率(Ppp):6.6kW@10/1000μs:采用国际标准的10/1000μs脉冲波形(10μs上升沿、1000μs下降沿)测试,峰值功率达6.6kW,覆盖绝大多数实际场景中的瞬态干扰强度(如电网浪涌、感应雷击)。

三、机械封装与可靠性

SM8S30A采用DO-218AB封装(表面贴装型),该封装具备以下优势:

  1. 紧凑尺寸:适配高密度PCB设计,节省电路空间,适合便携设备、小型化模块的布局需求;
  2. 自动化生产兼容:表面贴装工艺可直接接入SMT生产线,提高生产效率,降低人工成本;
  3. 可靠性验证:器件经过高低温循环(-55℃~150℃)、湿度老化(85℃/85%RH)等可靠性测试,满足工业级或消费级的长期工作要求,静态漏电流稳定,防护性能持久。

四、典型应用场景

SM8S30A的参数特性使其适配多类低压电路的防护需求,典型应用包括:

  1. 消费电子:手机、平板、笔记本电脑的充电端口、USB接口,防止插拔浪涌、静电放电损坏充电IC或主板;
  2. 工业控制:PLC(可编程逻辑控制器)的输入输出接口、传感器电路,应对电网浪涌、感应雷击等瞬态干扰;
  3. 通信设备:路由器、交换机的以太网端口、电源接口,保护通信芯片免受瞬态干扰影响;
  4. 小型电源模块:12V/24V直流电源的输出端,防止负载突变或外部浪涌损坏电源模块。

五、产品核心优势总结

SM8S30A作为一款针对性的低压TVS器件,具备以下核心优势:

  1. 高效防护:纳秒级响应速度+精准钳位电压,快速抑制瞬态过压,保护效果显著;
  2. 高耐受能力:6.6kW峰值功率、136A脉冲电流,应对强干扰场景游刃有余;
  3. 低损耗设计:10μA反向漏电流,不影响电路正常功耗;
  4. 灵活适配:单向防护+DO-218AB封装,适配多类低压电路的布局与防护需求;
  5. 品牌保障:DOWO(东沃)作为专业防护器件品牌,产品质量稳定,售后支持完善。

综上,SM8S30A是一款性能均衡、适配性强的低压瞬态抑制二极管,能有效解决低压电路的瞬态干扰问题,是消费电子、工业控制等领域的优质防护选择。

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.