WMSIC Electronic Components

Brightking SMAJ48CA/TR13 SMAJ48CA

ModelSMAJ48CA/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 SMAJ48CA / TR13
Type
BRIGHTKING
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMAJ48CA/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
BM0228986047
Operating Temperature
65℃~+150℃
Voltage
77.4V
Current(Ir)
1uA
Voltage(VBR)
53.3V
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 SMAJ48CA/TR13 瞬态抑制二极管(TVS)产品概述

一、产品基本定位与品牌背景

Brightking(台湾君耀)作为全球知名过压保护器件厂商,其SMAJ48CA/TR13 属于双向瞬态抑制二极管(TVS) 系列,针对小体积、高密度电路的瞬态过压防护需求设计,是48V系统过压保护的主流选型之一。该型号延续君耀TVS产品的高可靠性、宽温特性,广泛应用于消费电子、工业控制及通信设备领域,适配对空间敏感的小型化产品设计。

二、核心电气参数深度解析

TVS的核心性能由电气参数直接决定,SMAJ48CA/TR13的关键参数及实际意义如下:

  • 极性:双向:可同时抑制正负瞬态脉冲,无需区分电路极性,简化PCB布局与焊接;
  • 反向截止电压(Vrwm):48V:电路正常工作时(无瞬态脉冲),TVS处于截止状态的最高电压,需匹配电路额定工作电压(如48V直流电源系统);
  • 击穿电压(Vbr):53.3V(典型值):TVS开始导通的电压,比Vrwm高10%左右,确保正常工作时不导通;
  • 钳位电压(Vc):77.4V(Ipp=5.2A时):峰值脉冲电流通过时,TVS两端的最高电压,需低于后级电路的最大耐受电压(如保护IC耐压≥80V则安全);
  • 峰值脉冲电流(Ipp):5.2A:8/20μs标准脉冲波形下的最大允许电流,反映器件抗脉冲冲击能力;
  • 峰值脉冲功率(Ppp):400W:单次脉冲的最大功率(Ppp=Vc×Ipp),是选型核心指标;
  • 反向漏电流(Ir):1μA(Vrwm下):正常工作时漏电流极小,不影响电路功耗与信号完整性;
  • 工作温度范围:-65℃~+150℃:覆盖极端高低温,适合工业、航空航天等严苛场景。

三、封装形式与物理特性

SMAJ48CA/TR13采用SMA封装(DO-214AC) ,属于表面贴装无引线封装,物理尺寸约2.7mm(长)×1.6mm(宽)×1.1mm(高),具备以下优势:

  • 小体积高密度:适配智能手机、智能穿戴等小型化产品的PCB布局,支持高密度集成;
  • 焊接兼容性:符合回流焊、波峰焊工艺要求(回流焊温度≤260℃,时间≤30s),焊接可靠性高;
  • 环保特性:无铅无卤,符合RoHS与REACH标准,满足全球市场准入要求。

四、典型应用场景

结合参数特性,SMAJ48CA/TR13的核心应用场景包括:

  1. 消费电子:智能手机、平板的Type-C充电接口、USB/HDMI数据端口,防护静电放电(ESD)与浪涌冲击;
  2. 工业控制:PLC、传感器接口、48V低压直流电源,适应-40℃~+85℃工业环境;
  3. 通信设备:路由器、交换机的以太网端口(10/100/1000M)、射频接口,抵御雷电感应与电源浪涌;
  4. 电源电路:48V直流电源输出端、电池管理系统(BMS),防止负载短路或瞬态脉冲损坏电源模块;
  5. 汽车电子辅助:车载12V转48V电源系统的瞬态防护(需确认AEC-Q101认证,部分场景适用)。

五、关键性能优势

相比同类竞品,SMAJ48CA/TR13的核心优势体现为:

  • 双向防护简化设计:无需区分正负脉冲,减少电路复杂度与物料种类;
  • 宽温可靠性:-65℃~+150℃远超工业级标准,适应极端环境;
  • 低功耗低干扰:1μA漏电流对电路功耗与信号完整性无明显影响;
  • 高脉冲耐受:400W峰值功率可抵御IEC 61000-4-5 2kV/2A浪涌;
  • 快速响应:典型响应时间<1ns,瞬间抑制瞬态脉冲,保护敏感器件(如MCU、传感器)。

六、选型与应用注意事项

  1. 电压匹配:Vrwm需≥电路正常工作电压(如48V系统选Vrwm≥48V);
  2. 功率降额:长期应用建议脉冲功率按80%降额(≤320W),延长寿命;
  3. 焊接工艺:避免焊接温度过高/时间过长,防止封装损坏;
  4. 后级校验:钳位电压Vc需<后级电路最大耐受电压;
  5. 批量确认:需确认编带包装(TR13)、认证(UL)等细节,匹配生产需求。

该型号凭借高可靠性、宽温特性与小体积优势,成为48V系统过压防护的高性价比选型,适用于多种严苛场景的瞬态脉冲抑制需求。

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