WMSIC Electronic Components

BORN SMDJ70CA

ModelSMDJ70CA
PackageDO-214AB
BrandBORN
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
BORN SMDJ70CA
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMDJ70CA
Electronic Component
1
Package
DO-214AB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.404g
Electronic Component
1
Electronic Component
BM0264900524
Voltage
113V
Current(Ir)
1uA
Voltage(VBR)
77.8V
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.

SMDJ70CA 3000W 双向 TVS(DO-214AB)产品概述

一、简介

SMDJ70CA 是 BORN(伯恩半导体)推出的一款高能量、双向瞬态抑制二极管(TVS),封装为 DO-214AB(常见于 SMBJ 系列),针对工业、通讯、电源及汽车等系统的瞬态过压保护需求设计。器件在 10/1000μs 波形下能承受最高 3000W 峰值脉冲功率,适合对雷击、浪涌及故障突波提供稳健保护。

二、主要电气参数

  • 极性:双向(适用于交流或双向脉冲场合,无极性标识)
  • 反向工作电压 Vrwm:70V
  • 击穿电压 VBR:77.8V(典型/测试条件见厂商资料)
  • 钳位电压(Ipp 时):113V(在峰值脉冲电流下的钳位表现)
  • 峰值脉冲电流 Ipp:26.5A(对应 10/1000μs)
  • 峰值脉冲功率 Ppp:3kW @ 10/1000μs(单次脉冲能力)
  • 反向漏电流 Ir:1μA(在 Vrwm 条件下的典型小电流)
    以上参数为典型/典型测试条件下值,具体使用时请参照厂商完整数据手册。

三、关键特性与优势

  • 高能量吸收:3000W 峰值功率能有效吸收由雷击或开关瞬变产生的高能量脉冲,提高系统存活率。
  • 低漏电流:Ir≈1μA,有利于对电路静态功耗敏感的应用。
  • 稳定钳位:在峰值脉冲下钳位电压约 113V,能将瞬态电压限制在可接受范围内,保护后级器件。
  • 双向保护:无需区分极性,适合 AC 线路、差分信号或可能出现正/负脉冲的场合。
  • 标准封装:DO-214AB 易于自动贴装与回流焊接,便于量产与更换。

四、典型应用场景

  • 工业控制与电源模块的输入端防雷浪涌保护
  • 通讯设备(基站、光纤收发端口):抑制线路瞬态
  • 电池管理、电动车周边电子设备的瞬态保护(需结合系统额定电压确认)
  • 逆变器、UPS、家用电器及测试测量设备的端口防护

五、安装与热管理建议

  • PCB 布线应尽量缩短保护器件与被保护点间的导线,降低寄生感抗与回路阻抗。
  • 对于高能量冲击场合,建议器件下方及周围采用较大铜面积并结合通孔或散热铜柱,利于热量扩散与重复冲击后的恢复。
  • DO-214AB 为常规回流焊兼容封装,遵循厂商推荐的回流温度曲线与焊盘尺寸以保证焊点可靠性。
  • 在高频或敏感信号路径中,注意 TVS 的寄生电容对信号的影响,必要时选择低电容方案或安置于保护端口的末端。

六、选型与使用注意事项

  • 虽然器件标注 3000W 峰值功率,但这是在特定脉冲波形(10/1000μs)条件下的峰值能力,重复脉冲、环境温度及安装散热都会影响实际承受能力,应按系统实际工况留有余量。
  • 双向器件不会区分极性,但在直流持续偏置场合需确认 Vrwm 是否符合系统最大工作电压。
  • 在关键应用中,建议参考 BORN 的完整数据手册获取 VBR 测试电流、热阻、机械尺寸与回流规范,并进行实际浪涌试验验证。

选型示例:BORN SMDJ70CA,DO-214AB 封装,3000W(10/1000μs),双向,Vrwm 70V。

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