WMSIC Electronic Components

Brightking SMAJ45CA/TR13 SMAJ45CA

ModelSMAJ45CA/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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking SMAJ45CA / TR13
Type
BRIGHTKING
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMAJ45CA/TR13
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.124g
Electronic Component
1
Electronic Component
BM0265144502
Operating Temperature
65℃~+150℃
Voltage
72.7V
Current(Ir)
1uA
Voltage(VBR)
50V
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.

Brightking SMAJ45CA/TR13 瞬态抑制二极管(TVS)产品概述

Brightking(台湾君耀)SMAJ45CA/TR13是一款双向瞬态抑制二极管(TVS),采用SMA(DO-214AC)贴片封装,专为低电压电路的过压防护设计,具备宽温工作、小体积、高可靠性等特点,广泛应用于消费电子、工业控制、通信等领域。

一、产品核心定位与类型

该器件属于瞬态抑制二极管(TVS) 范畴,核心作用是快速响应电路中的瞬态过压(如静电放电ESD、电源浪涌、感应雷击),将电压钳位在安全范围内,保护后端敏感元器件(如MCU、传感器、IC)不受损坏。区别于单向TVS,SMAJ45CA为双向防护,可同时应对正负方向的过压脉冲,适配双向传输接口(如USB、数据总线)的防护需求。

二、关键电气参数深度解析

SMAJ45CA/TR13的电气参数经过优化,平衡了防护能力与电路兼容性:

  1. 反向截止电压(Vrwm):45V
    这是器件正常工作时允许施加的最大反向电压,此时器件处于截止状态,漏电流极小,不影响电路正常功能。需注意:电路工作电压需低于45V,避免器件误触发。
  2. 击穿电压(Vbr):50V
    当电压超过Vrwm后,器件开始击穿导通,50V为典型击穿起始电压,确保过压发生时快速响应(响应时间<1ns)。
  3. 钳位电压(Vc):72.7V
    这是峰值脉冲电流下器件两端的最大电压,是防护效果的核心指标。72.7V的钳位电压可有效将过压限制在后端元器件的耐压阈值内(常规IC耐压多在60-80V),避免击穿损坏。
  4. 峰值脉冲电流(Ipp):5.5A
    基于8/20μs浪涌波形(模拟雷电或电源浪涌),器件可承受的最大峰值电流为5.5A,对应峰值脉冲功率(Ppp)约400W(5.5A×72.7V≈400W),满足常规低功率电路的浪涌防护需求。
  5. 反向漏电流(Ir):1μA
    正常工作时(V=Vrwm),反向漏电流仅1μA,远低于常规电路的静态电流,不会对电路功耗产生显著影响。
  6. 工作温度范围:-65℃~+150℃
    宽温设计适配极端环境(如工业低温车间、汽车高温舱内),可靠性更高。

三、封装与可靠性特性

  1. SMA(DO-214AC)贴片封装
    尺寸约为2.0mm(长)×4.5mm(宽)×1.5mm(高),体积小巧,适合高密度PCB布局(如便携设备、小型模块);支持回流焊、波峰焊等自动化贴装工艺,生产效率高。
  2. 可靠性优势
    • 符合RoHS、REACH等环保标准,无铅无卤;
    • Brightking生产工艺成熟,器件一致性好,抗老化能力强;
    • 宽温工作范围确保极端温度下仍能稳定防护,无性能衰减。

四、典型应用场景

SMAJ45CA/TR13的参数特性使其适配以下场景:

  1. 消费电子:手机、平板、笔记本电脑的USB接口、Type-C接口、音频接口的ESD/浪涌防护;
  2. 工业控制:小型PLC、传感器模块、远程IO端口的过压防护(工作电压≤45V);
  3. 通信设备:路由器、交换机、小型基站的以太网接口、射频接口防护;
  4. 汽车电子(低电压域):车载USB充电口、辅助控制电路的过压防护(需确认工作温度匹配)。

五、型号标识与品牌说明

  • 型号解析:SMA(封装)+J(TVS类型)+45(Vrwm=45V)+C(双向)+A(系列)+TR13(编带包装,方便自动化贴装);
  • 品牌背景:Brightking(台湾君耀)是全球知名的过压防护器件厂商,专注于TVS、压敏电阻等产品研发生产,产品广泛应用于全球电子行业,可靠性经过UL、VDE等权威机构认证。

该器件是低电压双向过压防护的高性价比选择,适合对体积、功耗敏感的电路设计,可有效提升电子设备的抗干扰能力与可靠性。

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