WMSIC Electronic Components

Brightking SMAJ7.0A/TR13 SMAJ7.0A

ModelSMAJ7.0A/TR13
PackageSMA
BrandBrightking
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking SMAJ7.0A / TR13
Type
BRIGHTKING
Minimum package
5000

Technical parameters

Electronic Component
Brightking
Electronic Component
SMAJ7.0A/TR13
Electronic Component
1
Package
SMA
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.124g
Electronic Component
1
Electronic Component
BM0257694862
Operating Temperature
65℃~+150℃
Voltage
12V
Current(Ir)
200uA
Voltage(VBR)
7.78V
Electronic Component
5000
Power(Ppp)
400W

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

SMAJ7.0A/TR13 — Brightking (台湾君耀) SMA 封装 单向 TVS 产品概述

一、产品简介

SMAJ7.0A/TR13 是 Brightking(台湾君耀)推出的一款单向瞬态电压抑制二极管(TVS),采用常见的 SMA 表面贴装封装。该器件针对瞬态过电压和浪涌脉冲提供快速钳位保护,适用于5V类电源线、信号线以及各种直流电源轨的浪涌防护。器件设计注重抑制大能量脉冲同时保持较低的反向泄漏,适应宽温度范围的工业级应用。

二、主要性能特点

  • 单向极性,适合对地(或与参考地)进行正向浪涌保护,安装方向明确(阴极带标记)。
  • 额定反向静态工作电压(Vrwm)7V,常用于 5V 及类似电压等级系统的过压保护。
  • 峰值脉冲功率 Ppp 400W(10/1000µs或厂方指定波形下),能承受短时大能量浪涌。
  • 峰值脉冲电流 Ipp 33.3A,对短时浪涌具有良好承受能力。
  • 钳位电压 12V(典型值),在峰值冲击下能将电压限制在可接受范围,保护下游元件。
  • 低反向电流 Ir,仅 200µA(在 Vrwm 条件下常温测得),减小静态功耗和发热。
  • 宽工作温度范围:-65℃ 至 +150℃,适应严苛环境及高温工况。

三、电气参数说明(关键参数)

  • 类型:单向 TVS(瞬态电压抑制二极管)
  • 反向截止电压 Vrwm:7V(额定静态电压)
  • 击穿电压(典型):7.78V
  • 钳位电压 Vc(在 Ipp 条件下典型值):12V
  • 峰值脉冲电流 Ipp:33.3A
  • 峰值脉冲功率 Ppp:400W
  • 反向电流 Ir:200µA(Vrwm 下,常温)
  • 工作温度:-65℃ ~ +150℃
  • 封装:SMA(表面贴装)
    注:实际钳位电压与测量波形、脉冲时间及 PCB 布局有关,设计时请参考厂方详尽数据手册。

四、封装与安装建议

  • SMA 封装适合自动贴装和回流焊工艺,器件本体带阴极识别标志(用于确定连接方向)。单向器件应保证阴极连接受保护的正电位,阳极接地或系统参考地。
  • 为提高浪涌能量吸收能力,推荐在保护器件附近布置低阻抗、低感抗的接地回路,增大接地铜箔面积并避免细长走线。
  • 在回流焊和热处理过程中,请遵循制造商推荐的温度曲线,以防封装和焊接界面应力影响可靠性。具体焊接参数请参考技术资料。

五、典型应用场景

  • 5V 或 7V 级别的电源轨防护(如微处理器电源、接口电源)。
  • USB、串口、通信接口及差分信号的线路保护(配合滤波和阻抗匹配元件)。
  • 工业控制、仪器仪表、电源模块、消费电子和通信设备的浪涌/雷击能量抑制。
  • 在高温或严苛环境下仍需抗浪涌能力的场合,得益于宽温度范围的特性。

六、可靠性与注意事项

  • 虽然器件能承受短时高能脉冲,但对重复大能量冲击会降低寿命或导致失效。针对频繁浪涌环境,应采取级联保护或能量分担设计(如前置限流器、保险丝等)。
  • 反向泄漏与温度高度相关,系统空载或长期工作时应评估热效应和功耗。
  • 器件为静电/浪涌防护元件,本身并非高频信号隔离器。保护布线要尽量缩短、减小回路面积以降低寄生感抗。
  • 存储与搬运时避免潮湿和机械应力,卷带包装(TR)便于 SMT 贴装线使用,TR13 常用于卷带包装规格(请确认采购说明)。

七、订购与技术支持

型号示例:SMAJ7.0A/TR13,Brightking(台湾君耀)品牌。TR 表示卷带包装,便于自动化贴装;13 可能指卷盘规格,具体包装信息请以厂家报价单或包装说明为准。购买前建议索取并查阅厂方完整数据手册和样品进行电路验证,如有需要可咨询供应商获取 PCB 布局建议、回流焊规范及浪涌测试曲线。

如需更详细的电气曲线、能量脉冲波形下的钳位特性或 PCB 推荐焊盘,请提供具体应用场景和浪涌波形要求,可进一步给出针对性的设计建议与验证方案。

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