WMSIC Electronic Components

DOWO SMCJ51CA

ModelSMCJ51CA
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 SMCJ51CA
Type
DOWO
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMCJ51CA
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
BM0264368313
Operating Temperature
55℃~+150℃
Voltage
82.4V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
56.7V

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

SMCJ51CA 瞬态抑制二极管(TVS)产品概述

SMCJ51CA是东沃(DOWO)推出的双向瞬态抑制二极管(TVS),属于贴片式过压防护器件,采用SMC(DO-214AB)封装,专为敏感电子电路的瞬态浪涌(如静电放电、雷击感应浪涌)防护设计,可有效钳位瞬时过压至安全范围,保护后端器件不受损坏。

一、产品核心属性与分类

SMCJ51CA属于双向TVS管,无需区分正负极即可实现双向过压防护,简化电路设计与安装流程;其封装类型为SMC(DO-214AB),是常见的贴片式封装,体积小巧,适配自动化贴装工艺,适合高密度PCB布局。

二、关键电气参数深度解析

SMCJ51CA的电气参数经过精准设计,可满足多场景防护需求,核心参数如下:

1. 工作电压与导通特性

  • 反向截止电压(Vrwm):51V
    正常工作状态下,器件可长期承受的最大反向电压,此时器件处于截止状态,漏电流极小,不影响电路正常运行。
  • 击穿电压(Vbr):56.7V
    器件开始导通的电压阈值,比Vrwm高5.7V,确保正常工作时不会误触发导通,仅在瞬时过压超过该值时才启动防护机制。

2. 防护能力参数

  • 钳位电压(Vc):82.4V
    当峰值脉冲电流(Ipp)达到18.2A时,器件两端的最大电压值,是衡量防护效果的核心指标——钳位电压越低,对后端敏感器件的保护越可靠。
  • 峰值脉冲电流(Ipp):18.2A
    10/1000μs(前沿10μs、半峰值1000μs)标准浪涌波形下,器件可承受的最大瞬时电流,能应对常见浪涌冲击。
  • 峰值脉冲功率(Ppp):1.5kW
    同波形下的最大脉冲功率容量,由Vc与Ipp乘积(82.4V×18.2A≈1500W)验证,可支撑较强浪涌的瞬时能量吸收。

3. 其他关键参数

  • 反向漏电流(Ir):1μA(@Vrwm)
    正常工作时的反向漏电流,数值极小,不会对电路功耗或信号传输造成影响。
  • 工作温度范围:-55℃+150℃
    宽温范围覆盖工业级环境(-40℃+85℃)及部分高温场景,环境适应性强。

三、封装与可靠性设计

SMCJ51CA采用SMC(DO-214AB)贴片封装,具有以下实用优势:

  • 体积小巧:尺寸约为3.0mm×2.5mm×1.5mm,节省PCB空间,适合小型化电子设备(如智能家居、便携终端)。
  • 贴装便捷:适配SMT自动化贴装工艺,生产效率高,降低人工成本。
  • 可靠性高:防护等级符合IEC 61000-4-2(静电放电防护标准),可有效抵御人体静电、设备静电等冲击;宽温设计确保在极端温度下仍能稳定工作,无性能衰减。

四、典型应用场景

SMCJ51CA的双向防护、宽温适应等特性,使其适用于多领域的过压防护需求:

  1. 工业控制设备:PLC、传感器接口、伺服驱动器等电路的浪涌与ESD防护,避免工业环境中的电磁干扰损坏器件。
  2. 通信设备:基站、路由器、交换机的信号端口、电源端口防护,应对户外雷击感应浪涌。
  3. 消费电子:显示器、机顶盒、智能家居设备的接口(如HDMI、USB)静电防护,提升产品耐用性。
  4. 汽车电子:辅助系统(如车载显示屏、胎压传感器)的过压防护(宽温特性适配部分车载场景)。
  5. 电源模块:低压直流电源(12V、24V系统)的浪涌抑制,保护后端敏感IC不受瞬时过压冲击。

五、产品核心优势

  1. 双向防护,安装简便:无需区分正负极,简化电路设计与生产流程,降低误装风险。
  2. 参数精准,防护可靠:击穿电压、钳位电压稳定,可精准钳位瞬时过压,减少后端器件损坏概率。
  3. 宽温适应,环境兼容:-55℃~+150℃覆盖工业及高温场景,适用范围广,无需额外降额设计。
  4. 小体积封装,适配小型化:SMC封装节省PCB空间,适合高密度电路设计,满足设备轻薄化需求。
  5. 高功率容量,抗冲击强:1.5kW峰值脉冲功率,可承受较强浪涌与ESD冲击,防护能力突出。

总结

SMCJ51CA是东沃针对瞬态过压防护推出的高可靠性TVS器件,凭借双向防护、精准参数、宽温适应及小体积封装等优势,可广泛应用于工业、通信、消费电子等领域,为敏感电子器件提供稳定可靠的瞬态保护,是电子设备过压防护的优质选择。

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