WMSIC Electronic Components

DOWO 5.0SMDJ140CA

Model5.0SMDJ140CA
PackageSMC(DO-214AB)
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 5.0SMDJ140CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
5.0SMDJ140CA
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.42g
Electronic Component
1
Electronic Component
BM0264356178
Operating Temperature
55℃~+150℃
Voltage
226.8V
Current(Ir)
5uA
Voltage(VBR)
155V
Electronic Component
Electronic Component

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

5.0SMDJ140CA 双向瞬态抑制二极管(TVS)产品概述

5.0SMDJ140CA是DOWO(东沃)品牌推出的表面贴装双向TVS管,采用SMC(DO-214AB)封装,专为140V电压等级电路的瞬态过压防护设计。该器件可快速响应雷击、开关浪涌、静电放电(ESD)等干扰,将电压钳位在安全范围,保护敏感电子元件免受损坏,适用于工业控制、汽车电子等严苛环境。

一、产品核心定位与封装特征

该器件属于工业级双向TVS管,核心特征明确:

  • 双向极性:无需区分正负,正反方向均具备防护能力,简化电路设计与安装;
  • SMC封装:符合DO-214AB标准的表面贴装封装,体积紧凑(典型尺寸2.7mm×3.5mm×1.9mm),适配自动化SMT生产线,适合高密度PCB布局;
  • 品牌可靠性:DOWO品牌工业级器件,批次一致性经市场验证,满足工业/汽车电子的严苛要求。

二、关键电性能参数解析

参数针对140V工作场景优化,核心优势清晰:

2.1 电压与防护阈值

  • 反向截止电压(Vrwm=140V):正常工作时反向偏置的最高静态电压,确保电路无额外功耗;
  • 击穿电压(Vbr=155V):典型启动防护阈值,电压超155V时TVS迅速导通,阻断过压传导;
  • 钳位电压(Vc=226.8V@10/1000μs):10/1000μs脉冲波形下的电压上限,远低于多数敏感元件(如IC、MOS管)的损坏阈值,实现有效防护。

2.2 脉冲耐受能力

  • 峰值脉冲功率(Ppp=5kW):同波形下最大耐受功率,覆盖工业环境中雷击、电机开关浪涌的能量规模;
  • 峰值脉冲电流(Ipp=22A):最大瞬态电流冲击耐受值,应对强浪涌场景;
  • 反向漏电流(Ir=5μA@Vrwm):静态漏电流极低,几乎不影响电路正常运行。

2.3 宽温适应特性

工作温度范围为**-55℃+150℃**,覆盖工业级(-40+85℃)与汽车级(-40~+125℃)温区,可稳定工作于极端高温(如发动机舱)或低温(如户外工业设备)环境。

三、典型应用场景

适配140V电压等级的过压防护需求,典型场景包括:

  1. 工业控制电路:PLC(可编程逻辑控制器)数字输入/输出口、传感器接口、伺服电机驱动电路(IGBT/MOS管栅极/漏极防护);
  2. 汽车电子:车载120V辅助电源、新能源汽车低压辅助电路、充电桩电源端口防护;
  3. 通信设备:基站电源模块、光纤收发器、工业路由器的电源输入/输出端;
  4. 电源系统:开关电源、UPS(不间断电源)输出端,防止负载切换或雷击带来的瞬态过压损坏。

四、选型与替换注意事项

若需替换或选型,需重点匹配以下参数:

  • 极性:必须为双向TVS,单向器件无法实现正反防护;
  • 电压参数:Vrwm需≥电路实际工作电压,Vc需低于被保护元件的耐压值;
  • 功率/电流:Ppp需≥实际可能的脉冲功率,Ipp匹配脉冲电流规模;
  • 封装与温度:SMC封装需适配PCB焊盘,温度范围需覆盖工作环境。

总结

5.0SMDJ140CA凭借双向防护、高脉冲耐受、宽温紧凑的核心优势,成为140V电压等级电路过压防护的高性价比选择。其参数精准匹配工业、汽车、通信等领域的严苛需求,可有效降低瞬态干扰导致的设备损坏风险,提升系统可靠性。

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