WMSIC Electronic Components

Jingdao Microelectronics SMAJ43CA

ModelSMAJ43CA
PackageSMA
BrandElectronic
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
Electronic SMAJ43CA
Type
Jingdao Microelectronics
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMAJ43CA
Electronic Component
1
Package
SMA
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.111g
Electronic Component
1
Electronic Component
BM0264086076
Operating Temperature
55℃~+150℃
Voltage
69.4V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA
Voltage(VBR)
52.8V

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

SMAJ43CA 双向TVS二极管产品概述

一、产品定位与核心属性

SMAJ43CA是晶导微电子推出的双向瞬态抑制二极管(TVS),核心作用是快速响应电路中的瞬态过压冲击(如浪涌、静电放电ESD),保护敏感电子元器件免受损坏。该器件采用SMA(DO-214AC)贴片封装,体积小巧适配自动化贴装,支持-55℃~+150℃宽温工作,且符合IEC 61000-4-2静电防护标准,是工业、通信、消费电子等领域过压防护的常规选型。

二、关键电气参数详解

1. 常态工作与导通阈值

  • 反向截止电压(Vrwm):43V:电路正常运行时,器件可承受的最大反向电压,确保不导通、不干扰信号传输。
  • 击穿电压:52.8V:反向电压超过该值时,TVS快速导通,启动过压防护功能。

2. 脉冲耐受能力

  • 钳位电压:69.4V:承受10/1000μs峰值脉冲时,将浪涌电压钳位在安全范围,避免后端器件击穿。
  • 峰值脉冲功率(Ppp):400W(10/1000μs)、峰值脉冲电流(Ipp):5.8A(10/1000μs):反映器件应对典型浪涌(如雷击、电源瞬变)的能力,可覆盖多数民用/工业场景的冲击需求。

3. 低功耗特性

  • 反向漏电流(Ir):1μA:常态下漏电流极小,不增加电路功耗,也不影响信号完整性。

三、封装与可靠性设计

SMAJ43CA采用SMA(DO-214AC)贴片封装,尺寸仅约2.5×5.0×1.0mm,适合高密度PCB布局;贴片式设计支持自动化贴装,提升生产效率。

器件宽温工作范围(-55℃~+150℃)可稳定适配工业环境(如户外设备、高温车间)或极端温度场景;同时通过IEC 61000-4-2静电防护认证,能有效抵御人体接触、设备插拔等产生的ESD冲击,降低故障风险。

四、典型应用场景

结合双向防护、宽温及脉冲耐受特性,SMAJ43CA适用于以下场景:

  1. 通信设备:路由器、交换机、光模块的以太网/射频接口防护,抵御ESD及线路浪涌;
  2. 工业控制:PLC、传感器、变频器的电源/信号线路防护,应对电机启停等电压瞬变;
  3. 消费电子:充电器、机顶盒、智能家居设备的电源输入及USB接口防护,解决静电与浪涌问题;
  4. 车载电子(辅助):车载显示屏、低压传感器的ESD防护(需结合汽车级认证场景评估)。

五、品牌与合规性

晶导微电子作为国内功率器件主流厂商,SMAJ43CA采用成熟制造工艺,品质稳定且性价比突出。器件符合IEC 61000-4-2标准,满足电磁兼容性(EMC)要求,可助力终端产品通过相关认证;晶导提供完善技术支持,便于工程师选型与应用验证。

该器件凭借平衡的防护性能、宽温可靠性及紧凑封装,成为多领域过压防护的实用选型。

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