WMSIC Electronic Components

DOWO SMCJ26A

ModelSMCJ26A
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 SMCJ26A
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMCJ26A
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.43g
Electronic Component
1
Electronic Component
BM0265602910
Operating Temperature
55℃~+150℃
Voltage
42.1V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
28.9V

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

SMCJ26A瞬态抑制二极管(TVS)产品概述

SMCJ26A是一款单向瞬态抑制二极管(TVS),由DOWO(东沃)半导体推出,采用SMC(DO-214AB)表面贴装封装,专为电子电路的瞬态过压防护设计,可快速抑制静电放电(ESD)、浪涌脉冲等瞬态干扰,保护敏感元器件免受损坏。

一、产品核心定位与设计目标

SMCJ26A的核心设计目标是在不影响电路正常工作的前提下,快速响应并钳位瞬态过压,其关键优势体现在:

  • 低反向漏电流,不额外增加电路常态功耗;
  • 宽温度范围,适应极端环境(如工业高温、户外低温);
  • 高脉冲功率耐受能力,可应对强浪涌冲击;
  • 标准表面贴装封装,适配自动化SMT生产流程。

二、关键电气参数解析

SMCJ26A的电气参数直接决定其防护能力,核心参数及实际意义如下:

1. 电压特性(防护阈值与钳位能力)

  • 反向截止电压(Vrwm):26V:器件正常工作时可承受的最大反向电压,此时处于截止状态,无明显导通电流,适配26V及以下的电路工作电压;
  • 击穿电压(Vbr):28.9V:反向电压超过此值时,器件快速导通进入防护模式,是过压响应的起始阈值;
  • 钳位电压(Vc):42.1V:额定峰值脉冲电流下,器件两端的最大电压值,直接决定后端敏感元件(如IC、传感器)的安全阈值,确保不被击穿。

2. 脉冲耐受能力

  • 峰值脉冲电流(Ipp):35.63A:单次可承受的最大峰值脉冲电流,反映抗大电流冲击能力;
  • 峰值脉冲功率(Ppp):1.5kW@10/1000μs:在10μs上升、1000μs下降的标准浪涌脉冲下,可耐受的最大功率,符合IEC 61000-4-2等浪涌测试规范。

3. 常态功耗与环境适应性

  • 反向漏电流(Ir):1μA:Vrwm电压下的漏电流极低,对电路常态功耗影响可忽略;
  • 工作温度范围:-55℃~+150℃:覆盖工业级、汽车级极端温度需求,可在户外、高温车间等场景稳定工作。

三、封装与可靠性设计

SMCJ26A采用SMC(DO-214AB)表面贴装封装,具备以下特点:

  • 体积紧凑:典型尺寸为5.8mm×4.0mm×2.0mm,适配高密度PCB设计;
  • 贴装便捷:支持SMT自动化生产,焊接可靠性高;
  • 防护认证:符合IEC 61000-4-2静电放电标准,可有效抑制人体接触或设备间放电干扰。

四、典型应用场景

SMCJ26A的参数特性使其适用于多领域过压防护,典型场景包括:

  1. 消费电子:手机、平板、笔记本的USB接口、充电端口防护,防止静电/浪涌损坏主板;
  2. 工业控制:PLC、传感器、RS485通信接口防护,适应车间高温、粉尘环境;
  3. 汽车电子:车载显示屏、ECU电源端口防护,满足汽车级温度要求;
  4. 通信设备:路由器、交换机以太网端口、射频接口防护,抵御雷电浪涌或静电干扰。

五、选型与使用注意事项

  1. 电压匹配:确保Vrwm≥电路正常工作电压,避免器件常态导通;
  2. 脉冲测试:验证防护能力需采用10/1000μs标准浪涌脉冲(匹配Ppp测试条件);
  3. 焊接工艺:遵循SMC封装焊接曲线(回流焊峰值240℃~260℃),避免过热损坏;
  4. 存储条件:未开封器件存于-10℃~+40℃、湿度≤60%环境,开封后尽快使用。

SMCJ26A凭借平衡的防护能力、宽温特性与标准封装,成为中低压电路瞬态过压防护的高性价比选择,可有效提升电子设备的可靠性与抗干扰能力。

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