WMSIC Electronic Components

DOWO SMDJ75CA

ModelSMDJ75CA
PackageDO-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 SMDJ75CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMDJ75CA
Electronic Component
1
Package
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
BM0264548690
Voltage
121V
Current(Ir)
2uA
Voltage(VBR)
83.3V
Electronic Component
Electronic Component
Electronic Component
3000

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

SMDJ75CA 产品概述

SMDJ75CA 是 DOWO(东沃)系列高能量瞬态电压抑制器(TVS),为需要高能脉冲抗扰能力的电源和信号线路提供可靠的过压保护。该器件采用玻璃钝化芯片工艺,具有极快的响应速度、低漏电流和优良的钳位性能,适用于工业、通信、电力及其他需要抗雷击/浪涌保护的场合。

一、主要特性

  • 双向(Bi-directional)设计,可对正负极性瞬变均提供保护,适用于交流或可反向的电脉冲环境。
  • 峰值脉冲功率能力:3000W(波形 10/1000 μs,重复率/占空比 0.01%)。
  • 峰值脉冲电流 Ipp:24.79A(对应 10/1000 μs 波形)。
  • 钳位电压(典型):121V(在指定脉冲条件下)。
  • 反向截止电压 Vrwm:75V(最大持续工作电压参考)。
  • 击穿电压 VBR:83.3V(在规定测试电流下)。
  • 反向漏电流 Ir:约 2 μA(在 Vrwm 条件下,典型低泄漏)。
  • 玻璃钝化芯片,响应极快,可靠性高。
  • RoHS 兼容。

二、关键参数(便于快速参考)

  • 类型:TVS(二向)
  • Vrwm(反向截止电压):75V
  • VBR(击穿电压):83.3V
  • 钳位电压:121V(对应 Ipp)
  • 峰值脉冲电流 Ipp:24.79A(10/1000 μs)
  • 峰值脉冲功率 Ppp:3000W(10/1000 μs)
  • 反向电流 Ir:2 μA(典型)
  • 封装:DO-214AB(SMD 封装)
  • 制程:玻璃钝化芯片

三、封装与可靠性

SMDJ75CA 采用 DO-214AB 表面贴装封装,适合自动化贴装与回流焊工艺,便于在有限空间内实现高能量浪涌保护。玻璃钝化芯片工艺提高了热稳定性和长期可靠性,在高应力脉冲下表现出良好的重复脉冲耐受能力。注意该器件标注的 3000W 是峰值脉冲能量(10/1000 μs),不代表连续功耗能力,设计时需考虑平均功率及热散逸条件。

四、典型应用场景

  • 48V 类通信电源、基站电源保护
  • 工业控制与自动化设备的电源及信号线防雷击/浪涌保护
  • 逆变器、驱动器等含可逆脉冲的电路防护
  • 配电系统、配电柜中对突发浪涌的抑制
  • 高能量电源保护场合需要双向钳位的应用

五、使用建议

  • 选型时将 Vrwm(75V)作为最大持续工作电压参考,推荐用于额定电压不超过 75V 的电源或线缆。
  • 对于双向保护,将器件直接并联在被保护线路两端;单向/双向家族器件可根据电路极性选择。
  • 注意钳位电压 121V(在 Ipp 条件下),需保证被保护器件和负载能够承受该电压峰值。
  • 该器件为脉冲能量型保护元件,设计时需保证系统有足够的热容量与散热路径,避免连续或高频脉冲导致过热。
  • 推荐在 PCB 设计时尽量缩短 TVS 到被保护器件的走线,增大焊盘铜厚以利散热与低阻抗路径。

六、采购与替代

SMDJ75CA 由 DOWO(东沃)提供,可在常见电子元器件分销渠道询价与采购。系列产品同时提供单向与双向单元,若系统为单极性直流保护,可考虑对应单向型号以获得更低钳位与更优泄漏特性。订购时请确认封装 DO-214AB 与规格一致,必要时索取器件数据手册与脉冲测试曲线以用于详细热和电气设计。

总结:SMDJ75CA 以 3000W 峰值脉冲能力、低漏电与快速响应为核心优势,适合 75V 等级的高能量瞬态保护应用,特别适合需要双向钳位的工业和通信场合。若需具体参数曲线或设计支持,可提供数据手册或进行应用咨询。

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