WMSIC Electronic Components

Brightking SMAJ28A/TR13 SMAJ28A

ModelSMAJ28A/TR13
PackageSMA(DO-214AC)
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking SMAJ28A / TR13
Type
BRIGHTKING
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMAJ28A/TR13
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.122g
Electronic Component
1
Electronic Component
BM0263488308
Voltage
45.4V
Current(Ir)
1uA
Voltage(VBR)
31.1V
Electronic Component
Electronic Component
Electronic Component
5000

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

Brightking SMAJ28A/TR13 单向瞬态抑制二极管(TVS)产品概述

一、产品定位与核心功能

SMAJ28A/TR13是台湾君耀(Brightking)推出的小型化单向表面贴装瞬态抑制二极管(TVS),核心作用是为电子电路提供快速过压防护,抵御静电放电(ESD)、雷电感应浪涌、开关切换浪涌等瞬态电压冲击,避免后端敏感元器件(如IC、传感器、MOSFET等)因过压击穿或损坏。该器件采用SMA(DO-214AC)封装,适配高密度PCB设计,适用于工作电压≤28V的各类电子设备。

二、关键电性能参数深度解析

SMAJ28A/TR13的参数经过精准设计,匹配28V工作电压场景的防护需求,核心参数及实际意义如下:

1. 反向截止电压(Vrwm):28V

此为器件正常工作时可承受的最大反向直流/交流电压,即电路运行时,反向偏置电压不得超过28V(否则器件提前导通影响电路)。该参数明确了适用范围——仅适配工作电压≤28V的电路(如12V/24V系统)。

2. 击穿电压(Vbr):31.1V

反向偏置电压达到此值时,器件进入雪崩击穿状态(TVS防护的核心原理)。31.1V的典型击穿电压确保浪涌发生时,器件能以ns级速度响应,不会因击穿电压过高导致后端元件受损。

3. 钳位电压(Vc):45.4V

当施加**峰值脉冲电流(Ipp=8.8A)**时,器件两端的最大电压值。45.4V远低于多数敏感IC的最大耐压(通常≤60V),能有效将浪涌电压限制在安全阈值内,避免元件击穿。

4. 峰值脉冲功率(Ppp):400W

由公式 ( P_{pp}=V_c \times I_{pp} ) 验证(45.4V×8.8A≈400W),此为器件可承受的最大瞬态脉冲功率,满足多数民用/工业场景的浪涌防护需求(如雷电感应浪涌通常在几百瓦级别)。

5. 反向漏电流(Ir):1μA

正常工作时(反向偏置≤28V)的最大反向漏电流。仅1μA的漏电流确保器件无额外功耗损耗,不影响电路正常工作电流和效率。

三、封装与物理特性

SMAJ28A/TR13采用SMA(DO-214AC)表面贴装封装,具有以下优势:

  • 小型化:尺寸约2.7mm×1.8mm×1.1mm,适配智能手机、可穿戴设备等高密度PCB设计;
  • 极性明确:通过封装色环标识阴极,安装时需注意反向偏置(单向TVS仅反向防护);
  • 工艺兼容:支持回流焊、波峰焊等自动化生产,适合批量制造;
  • 温度适应:工作温度范围-55℃至+150℃,可在工业级、汽车级(部分场景)环境下稳定工作。

四、典型应用场景

结合参数特性,该器件的核心应用场景包括:

  1. 消费电子:智能手机/平板的充电接口、USB-C/Lightning接口,抵御静电和充电浪涌;
  2. 通信设备:路由器、交换机的电源/以太网端口,防护雷电感应浪涌;
  3. 工业控制:PLC输入输出模块、传感器节点,应对开关浪涌和电磁干扰;
  4. 汽车电子:车载IVI系统的12V电源端口、CAN总线节点,防护点火浪涌和静电;
  5. 医疗设备:小型医疗仪器的信号端口,确保静电环境下稳定工作。

五、品牌与可靠性保障

台湾君耀(Brightking)是全球知名过压保护厂商,产品符合**IEC 61000-4-2(ESD)、IEC 61000-4-5(浪涌)、AEC-Q101(汽车级)**等国际标准。SMAJ28A/TR13经过严格测试:

  • 高温老化(125℃/1000小时);
  • 温度循环(-55℃至+150℃,1000次);
  • 湿度测试(85℃/85%RH,1000小时);
    确保恶劣环境下长期稳定,降低售后故障率。

六、总结

SMAJ28A/TR13是一款高性价比、小型化单向TVS,参数精准匹配28V以下电路防护需求,SMA封装适配高密度设计,君耀品牌保障可靠性。广泛适用于消费电子、通信、工业控制等领域,是替代同类进口器件的优质选择。

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