WMSIC Electronic Components

DOWO SMF12A

ModelSMF12A
PackageSOD-123FL
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 SMF12A
Type
DOWO
Minimum package
3000

Technical parameters

Electronic Component
DOWO
Electronic Component
SMF12A
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Electronic Component
BM0209986363
Operating Temperature
55℃~+150℃
Voltage
19.9V
Current(Ir)
2.5uA
Voltage(VBR)
13.3V
Electronic Component
3000
Power(Ppp)
1kW@8/20us

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

SMF12A 瞬态抑制二极管(TVS)产品概述

一、产品定位与核心属性

SMF12A是东沃电子(DOWO) 推出的一款单向瞬态抑制二极管(TVS),采用SOD-123FL表面贴装封装,专为12V电压等级系统的瞬态过压防护设计。作为过压保护核心器件,其核心作用是在电路遭遇雷击感应、静电放电、负载切换脉冲等瞬态过压时,快速响应并钳位电压,避免后端敏感电子元件(如MCU、传感器、IC)因过压损坏,保障系统稳定运行。

二、关键电气参数详解

SMF12A的电气参数针对12V系统优化,关键指标精准匹配实际应用需求:

  1. 反向截止电压(Vrwm):12V
    正常工作状态下反向截止,允许电路在12V以下稳定运行,不影响信号传输与静态功耗,适配多数12V供电系统的静态电压需求。
  2. 击穿电压(Vbr):13.3V
    当瞬态电压超过13.3V时,器件迅速从截止态切换为低阻抗态,启动过压防护,响应速度快(TVS典型响应时间为ns级)。
  3. 钳位电压(Vc):19.9V
    脉冲峰值时将过压钳位至19.9V以内,确保后端器件的工作电压不超过其耐受极限(预留安全裕量),避免不可逆损坏。
  4. 峰值脉冲电流(Ipp):10.05A
    匹配8/20μs标准脉冲波形下,最大可吸收10.05A的瞬态电流,能有效应对中等强度的过压冲击(如汽车点火脉冲、小型雷击感应)。
  5. 峰值脉冲功率(Ppp):1kW
    同样@8/20μs脉冲下的功率容量,覆盖多数工业、汽车电子场景的脉冲能量需求,满足典型过压事件的防护要求。
  6. 反向漏电流(Ir):2.5μA
    静态下反向漏电流极小(@Vrwm条件下仅2.5μA),不会对系统正常功耗造成额外负担,适合低功耗设计场景。

三、封装特性与环境适应性

SMF12A采用SOD-123FL封装,兼具小型化与高可靠性:

  • 小型化设计:封装尺寸约2.9×1.6×1.0mm(典型值),适合高密度PCB布局,满足便携式设备、小型模块的空间限制;
  • 表面贴装兼容:支持自动化贴片生产,提高生产效率,降低人工成本,适配大规模工业化制造;
  • 宽温工作范围:-55℃~+150℃的温度区间,覆盖汽车电子(发动机舱高温环境)、工业控制(低温严寒场景)等严苛应用;
  • 抗恶劣环境:封装结构抗冲击、抗振动能力强,符合行业可靠性标准,可长期稳定工作于复杂工况。

四、典型应用场景

结合参数与特性,SMF12A的典型应用覆盖三大领域:

  1. 汽车电子:车载12V电源系统(中控屏、车灯控制器、胎压传感器、CAN总线接口)的过压防护,应对点火脉冲、负载切换瞬态及雷击感应;
  2. 工业控制:PLC模块、传感器接口、12V电源单元的瞬态抑制,抵御工厂环境中的电磁干扰、静电放电;
  3. 消费电子:小型家电(智能音箱、扫地机器人)、便携式设备(移动电源、蓝牙音箱)的12V供电线路保护,防止充电过压、静电冲击。

五、品牌与品质保障

东沃电子(DOWO)作为国内专业过压保护厂商,SMF12A具备以下品质优势:

  • 环保合规:符合RoHS、REACH等国际环保标准,无铅无卤,适配绿色制造需求;
  • 可靠性认证:通过AEC-Q101(汽车级)等可靠性测试,满足汽车电子的严苛要求;
  • 参数一致性:生产工艺严格控制,器件参数偏差小,批量供应稳定,降低客户选型风险;
  • 技术支持:提供完善的应用方案与技术咨询,帮助客户快速完成电路设计与验证。

SMF12A凭借精准的参数匹配、可靠的封装设计与宽温适应性,成为12V系统过压防护的高性价比选择,适用于汽车、工业、消费电子等多领域。

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