WMSIC Electronic Components

Brightking SMBJ45CA/TR13 SMBJ45CA

ModelSMBJ45CA/TR13
PackageSMB
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 SMBJ45CA / TR13
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMBJ45CA/TR13
Electronic Component
1
Package
SMB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.196g
Electronic Component
1
Electronic Component
BM0264336874
Voltage
72.7V
Electronic Component
IEC 61000-4-2
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.

SMBJ45CA/TR13 瞬态抑制二极管(TVS)产品概述

一、产品定位与核心功能

SMBJ45CA/TR13是台湾君耀(Brightking)推出的双向瞬态抑制二极管(TVS),属于SMB贴片封装系列,核心定位为低/中压系统的瞬态过压防护器件。其核心功能是快速抑制静电放电(ESD)、雷电浪涌、开关瞬态等异常过压,保护后端敏感电子元件(如MCU、传感器、通信芯片、电源模块等)免受击穿或性能劣化。

二、关键参数与性能解析

该器件的参数设计围绕“瞬态防护能力”与“正常工作兼容性”平衡,核心参数及意义如下:

  1. 电压参数:
    • 反向截止电压(Vrwm):45V,指器件在系统正常工作状态下不导通的最大反向电压,确保系统工作电压(如24V、36V等)下无漏电流干扰,不影响信号传输;
    • 击穿电压(Vbr):50V(典型值),是器件进入雪崩击穿的电压阈值,为瞬态过压提供快速响应(响应时间<1ns);
    • 钳位电压(Vclamp):72.7V(@峰值脉冲电流Ipp=8.3A),是瞬态脉冲峰值下器件两端的最大电压,直接决定后端器件的防护效果(需远低于敏感元件的损坏电压)。
  2. 电流与功率参数:
    • 峰值脉冲电流(Ipp):8.3A,是器件能承受的单次瞬态脉冲电流最大值(10/1000μs波形);
    • 峰值脉冲功率(Ppp):600W,由钳位电压与脉冲电流共同决定(Ppp=Vclamp×Ipp),反映器件的功率容量;
    • 反向漏电流(Ir):仅1μA(@Vrwm),漏电流极小,不增加系统功耗,适合低功耗场景。
  3. 极性与响应:双向设计,可同时防护正、反向过压,无需额外匹配极性;响应时间达ns级,能瞬间抑制瞬态脉冲。

三、封装与可靠性设计

SMBJ45CA/TR13采用SMB贴片封装(尺寸约2.9mm×3.8mm×2.1mm),具备以下优势:

  1. 高密度适配:小尺寸贴片封装适合PCB高密度布局,满足消费电子、通信设备等小型化需求;
  2. 环保与焊接:无铅环保(符合RoHS、REACH标准),兼容回流焊、波峰焊工艺,焊接可靠性高(焊点剪切强度≥15N);
  3. 温度适应性:工作温度覆盖-55℃至150℃,可适应工业级(-40℃85℃)、商业级(0℃70℃)等多种应用环境。

四、防护标准与典型应用场景

该器件通过IEC 61000-4-2静电放电标准,可有效防护:

  • 接触放电:最高8kV(人体模型);
  • 空气放电:最高15kV(人体模型)。

典型应用场景包括:

  1. 消费电子:智能手机/平板的USB接口、耳机孔、充电端口防护;
  2. 通信设备:路由器LAN口、光纤收发器、基站射频接口的过压防护;
  3. 工业控制:PLC输入输出模块、传感器(温度/压力/位移)接口、伺服驱动器信号端防护;
  4. 汽车电子:车载辅助系统(倒车雷达、中控屏、车载充电器)的低压接口防护(需确认匹配汽车级IATF16949认证)。

五、品牌与选型注意事项

  1. 品牌优势:台湾君耀(Brightking)是全球知名的防护器件厂商,产品通过ISO9001、IATF16949等认证,生产工艺成熟,质量稳定;
  2. 选型要点:
    • 电压匹配:需确保Vrwm大于系统最大工作电压(如系统工作电压≤45V即可选用);
    • 功率匹配:根据预期瞬态浪涌功率选择对应Ppp的型号(如600W可覆盖多数中等功率浪涌场景);
    • 极性选择:双向型号(CA后缀)适合正反向均需防护的场景,单向型号(无CA后缀)可用于单向过压防护。

该器件凭借高性价比、小尺寸与可靠防护能力,成为中低压系统瞬态防护的主流选型之一。

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