WMSIC Electronic Components

Brightking SMBJ43A/TR13 SMBJ43A

ModelSMBJ43A/TR13
PackageSMB(DO-214AA)
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 SMBJ43A / TR13
Type
SMB(DO-214AA)
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMBJ43A/TR13
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.198g
Electronic Component
1
Electronic Component
BM0264590348
Voltage
69.4V
Current(Ir)
1uA
Voltage(VBR)
47.8V
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.

SMBJ43A/TR13 瞬态抑制二极管(TVS)产品概述

SMBJ43A/TR13是台湾君耀(Brightking)推出的一款单向瞬态抑制二极管(TVS),针对中低压电路的瞬态过压防护需求设计,凭借高可靠性、紧凑封装及精准的参数匹配,广泛应用于消费电子、工业控制、通信等领域。

一、产品定位与核心功能

作为瞬态抑制器件,SMBJ43A/TR13的核心作用是快速响应电路中的瞬态过压脉冲(如静电放电、雷击感应、开关浪涌等),将电压钳位在安全范围内,避免后端敏感元器件(如微控制器、传感器、功率器件)因过压损坏。其单向极性设计,适用于仅需抑制单一方向过压的电路场景(如电源正负极方向固定的电路)。

二、关键电气参数解析

SMBJ43A/TR13的参数经过精准优化,可满足多数中低压电路的保护需求,核心参数及意义如下:

  • 反向截止电压(Vrwm):43V
    电路正常工作时,器件反向可承受的最大直流电压,确保无过压时处于截止状态,不影响电路运行。需匹配电路最大工作电压(如电路正常电压≤36V时适配性最佳)。
  • 击穿电压(Vbr):47.8V
    反向电压达到此值时,器件开始导通并进入钳位状态,是过压保护的触发阈值,保证响应及时性。
  • 钳位电压(Vc):69.4V
    额定峰值脉冲电流(8.7A)下的最大端电压,即过压时后端电路可承受的最高安全电压,需低于被保护器件的耐压极限。
  • 峰值脉冲电流(Ipp):8.7A
    额定峰值脉冲功率(600W)下的脉冲电流,反映器件吸收瞬态能量的能力,可应对常见开关浪涌、静电脉冲。
  • 反向漏电流(Ir):1μA
    反向截止电压下的漏电流,数值极小,确保截止状态稳定,不额外消耗功率。

三、品牌与封装特性

  • 品牌优势:Brightking(君耀)是台湾老牌保护器件厂商,拥有数十年专业经验,产品通过RoHS、AEC-Q101(部分型号)等认证,以高可靠性、参数一致性著称,广泛服务于国内外电子厂商。
  • 封装设计:采用SMB封装(DO-214AA),尺寸紧凑(约2.3mm×3.5mm×1.0mm),适配高密度PCB设计;表面贴装工艺兼容自动贴装设备,安装便捷,降低生产制造成本。

四、典型应用场景

SMBJ43A/TR13的参数适配性强,可覆盖以下常见场景:

  1. 消费电子:手机、平板、笔记本的电源接口、USB端口、音频接口过压保护;
  2. 工业控制:PLC模块、传感器电路、电机驱动电路的瞬态浪涌抑制;
  3. 通信设备:路由器、交换机、基站的信号/电源线路防护;
  4. 汽车电子:车载充电系统、胎压监测传感器的过压防护(需确认具体车规需求)。

五、选型与使用注意事项

为确保保护效果,需注意以下几点:

  1. 极性匹配:单向TVS需反向接入电路(阴极接高压端,阳极接低压端),极性接反将失去保护作用;
  2. 参数匹配:Vrwm需略高于电路最大工作电压,Vc需低于被保护器件耐压,Ppp需覆盖电路最大瞬态功率;
  3. 焊接要求:焊接温度不超过260℃,时间不超过10秒,避免过热损坏器件;
  4. 并联扩容:单器件Ppp不足时,可并联多个同型号器件(保证参数一致),提升总脉冲吸收能力。

SMBJ43A/TR13以其平衡的参数性能与可靠的品牌背书,成为中低压电路过压保护的高性价比选择。

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