WMSIC Electronic Components

BORN SMDJ54CA

ModelSMDJ54CA
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 SMDJ54CA
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMDJ54CA
Electronic Component
1
Package
DO-214AB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.46g
Electronic Component
1
Electronic Component
BM0264900519
Operating Temperature
55℃~+150℃
Voltage
87.1V
Current(Ir)
2uA
Voltage(VBR)
66.3V
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.

SMDJ54CA 产品概述

一、产品简介

SMDJ54CA 是 BORN(伯恩半导体)出品的一款双向瞬态电压抑制二极管(TVS),采用 DO-214AB(SMCJ)表面贴装封装,适用于电信、计算机及其他需要浪涌保护的场合。器件采用玻璃钝化芯片与环氧树脂封装,兼顾可靠性与成本效益,适应工业级工作温度范围(-55℃ 至 +150℃)。

二、主要特性

  • 双向抑制,适合交流或对称脉冲干扰保护。
  • 反向截止电压(Vrwm):54V,提供稳定的工作电压窗口。
  • 击穿电压(VBR):66.3V,保证在过压时进入钳位状态。
  • 钳位电压:87.1V(在指定脉冲条件下),有效限制被保护端电压幅值。
  • 峰值脉冲电流(Ipp):34.4A @ 10/1000 μs,具备较强的抗浪涌能力。
  • 峰值脉冲功率(Ppp):3kW @ 10/1000 μs,能承受高能量短时冲击。
  • 低反向漏电流(Ir):2 μA,降低静态功耗与误动作风险。
  • 低电容,利于高速信号线应用,减小对信号完整性的影响。

三、典型应用

  • 电信设备:线路防雷、交换设备保护、光模块接口保护。
  • 计算机与外围设备:电源输入、USB/串口等外部接口的瞬态浪涌防护。
  • 工业控制与电源模块:抗雷击及开关瞬变抑制。
  • 任何需要双向过压保护且对器件电容与泄漏有较高要求的场景。

四、封装与安装建议

器件封装为 DO-214AB(SMCJ),适合自动贴装与回流焊工艺。安装建议:

  • 靠近被保护端口(如输入端子、接口)放置,以缩短走线,提升抑制效果。
  • 在高能量场合配合散热垫和铜箔扩展,必要时设置若干热过孔以导走热量。
  • 对于高速信号线,需评估器件电容对带宽的影响并在原理图中做好匹配与测试。

五、使用与可靠性注意事项

  • Vrwm 为器件的最大持续工作电压,长期在 Vrwm 附近工作会增加泄漏与发热,建议留有安全裕量。
  • 钳位电压和 Ipp 参数基于 10/1000 μs 波形测试,短脉冲时的瞬态性能优异,但连续冲击或高重复率冲击会降低可靠性,应评估能量吸收与系统散热。
  • 双向器件无极性方向要求,但在 PCB 布局时仍需按推荐方向放置以优化机械强度与热路径。
  • 存储与工作环境应避免强腐蚀性气体与过高湿度,环氧封装对机械应力有一定敏感性。

六、总结

SMDJ54CA 凭借 54V 的反向截止电压、低泄漏、低电容与 3kW 的脉冲功率能力,适用于需要高能量瞬态抑制且要求信号完整性的电信与计算机应用。合理的 PCB 布局与热管理可充分发挥其高浪涌承受能力,提升系统整体抗干扰与可靠性。购买与替代时请注意器件封装(DO-214AB)与双向特性,以确保兼容性。

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