WMSIC Electronic Components

BORN SMBJ10A

ModelSMBJ10A
PackageSMB
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 SMBJ10A
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMBJ10A
Electronic Component
1
Package
SMB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.322g
Electronic Component
1
Electronic Component
BM0264595470
Voltage
17V
Current(Ir)
35.3uA
Voltage(VBR)
11.1V
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.

SMBJ10A(BORN 伯恩)600W 单向 TVS 二极管 产品概述

一、产品简介

SMBJ10A 是 BORN(伯恩半导体)推出的一款功率型瞬态电压抑制器(TVS),采用 SMB 封装,单向结构,额定脉冲功率 600W(Ppp),反向工作电压 Vrwm 为 10V,典型钳位电压为 17V,峰值脉冲电流 Ipp 为 35.3A。该器件针对电源口及直流电源线等场合的瞬态过压和雷击浪涌(ESD、浪涌电流、感性负载回路产生的反向峰值)提供快速、可靠的保护。

主要参数

  • 类型:TVS(二极管)
  • 极性:单向(unidirectional)
  • 反向额定工作电压 Vrwm:10V
  • 击穿电压 VBR:11.1V(典型/测试条件相关)
  • 钳位电压 Vclamp:17V(在规定浪涌电流下)
  • 峰值脉冲电流 Ipp:35.3A
  • 峰值脉冲功率 Ppp:600W(10/1000µs 脉冲)
  • 反向泄漏电流 Ir:35.3µA(在 Vrwm 条件下)
  • 封装:SMB(常见于电源与接口防护的表面贴装封装)

二、关键参数解读与应用意义

  • Vrwm(10V)表示器件在正常工作状态下最大允许持续反向电压,适用于系统工作电压低于或等于 10V 的电源线保护(例如 5V、9V、10V 类电源)。若系统为 12V 长期工作电压,则此型号不建议直接作为常态保护器件。
  • VBR(11.1V)为击穿起始电压,表明在检测电流条件下开始进入限制区间的电压范围。
  • Vclamp(17V)是器件在承受额定脉冲时的钳位电压,表示浪涌发生时最大可能钳位到的电压。电路中下游器件需能承受此钳位电压或在前端增加串联滤波/限流元件。
  • Ppp(600W)与 Ipp(35.3A)决定了器件对短时高能浪涌的承受能力,适合对瞬态大电流冲击有较高要求的电源输入口保护。
  • Ir(35.3µA)为反向静态漏电,说明在正常工作下的静态功耗较小,适合对待机能耗有一定要求的系统。

三、典型应用场景

  • 各类便携设备与适配器的 DC 电源输入口瞬态浪涌保护(5V/9V/10V 系统)
  • 开关电源(SMPS)输入端、线缆接入口和模块化电源保护
  • 工业控制电源及低压传感器电源线防护(需确认工作电压)
  • 通讯设备和接口电源线防雷击与大电流浪涌抑制
    (注:若用于数据接口或更高工作电压场合,请根据 Vrwm 与 Vclamp 要求选择合适型号)

四、封装与安装建议

  • SMB 封装适合自动贴装与回流焊工艺,便于批量生产与可靠的机械固定。SMB 对应常见的 PCB 封装尺寸,请按器件的机械图纸设计相应焊盘与过孔(必要时参考 BORN 官方资料)。
  • 单向器件有极性,请确保阳极/阴极方向正确。一般 TVS 单向在正向导通方向用于短路保护,反向时用于钳位;安装时阴极一侧朝向有可能受保护的电源线方向。
  • 推荐使用符合 IPC 的回流焊曲线进行焊接,避免长时间高温暴露以保护结点性能。焊接后建议做一次浪涌与泄漏电流的功能确认。

五、选型与使用注意事项

  • 选型原则:Vrwm 应大于或等于系统最大工作电压但不宜过高,确保在浪涌时能在 Vclamp 下有效保护下游器件。对 5V/9V/10V 类电源口,SMBJ10A 是常见且合适的选择;对 12V 或更高电压系统,请选择 Vrwm 更高的型号。
  • 若系统可能遭受多次高能脉冲或连续冲击,需评估器件的能量吸收能力与温升,或使用更高能力 TVS、浪涌吸收器或限流器件配合。
  • 并联使用多个 TVS 以提高能量处理能力时要注意电压不匹配可能导致应力不均,应遵循厂商建议或采用并联带有串联阻抗的方法。
  • 在设计中考虑钳位电压对后端元件的影响,必要时在 TVS 前加入限流或熔断保护元件。

六、总结

SMBJ10A(BORN)是一款面向电源口常用的 SMB 封装 600W 单向 TVS,具有较高的浪涌吸收能力、较低的静态漏电和标准化的封装,适合为 5V/9V/10V 等低压直流电源线提供快速有效的瞬态过压保护。在实际应用中,务必根据系统工作电压、允许钳位电压和预期浪涌能量进行评估,并按照厂商提供的机械与焊接资料正确安装以保证长期可靠性。若需更高工作电压或更大能量承受能力,可联系供应商获取更合适的型号或并行/级联解决方案。

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