WMSIC Electronic Components

CJ CJSMAJ64A

ModelCJSMAJ64A
PackageSMAG
BrandCJ
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
CJ CJSMAJ64A
Type
CJ
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CJSMAJ64A
Electronic Component
1
Package
SMAG
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.114g
Electronic Component
1
Electronic Component
BM0264898177
Voltage
102V
Current(Ir)
5uA
Voltage(VBR)
78.54V
Electronic Component
Electronic Component
Electronic Component
5000

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

CJSMAJ64A TVS瞬态抑制二极管产品概述

一、产品基本信息

CJSMAJ64A是江苏长电/长晶(CJ品牌) 推出的单向瞬态抑制二极管(TVS),核心作用是快速抑制电路中的瞬态过压(如雷击感应、电源浪涌、静电放电等),避免敏感电子元器件(如芯片、电容、传感器)因过压损坏。该器件采用SMAG贴片封装,体积紧凑,适配小型化、高密度电子设备的设计需求,是低中压电路过压防护的常用器件之一。

二、核心电气参数详解

CJSMAJ64A的关键参数明确,覆盖多数低中压应用的防护要求:

  • 反向截止电压(Vrwm):62V,即器件正常工作时反向可承受的最大连续电压,确保电路在额定电压下稳定运行;
  • 击穿电压(Vbr):78.54V(典型值),是器件反向击穿的起始电压,标志着TVS进入“钳位工作状态”的阈值;
  • 钳位电压(Vc):102V(@10/1000μs波形),指特定脉冲波形下,器件能将电压钳位到的最大峰值,是过压保护效果的核心指标;
  • 峰值脉冲电流(Ipp):3.9A(@10/1000μs波形),对应波形下可承受的最大瞬态脉冲电流,反映器件的脉冲耐受能力;
  • 峰值脉冲功率(Ppp):400W(@10/1000μs波形),与Ipp、Vc匹配,体现器件的脉冲功率容量;
  • 反向漏电流(Ir):5μA(@Vrwm),反向截止状态下漏电流极小,对电路正常工作无明显干扰。

三、封装与适用场景

该器件采用SMAG贴片封装,属于小型表面贴装封装(常规尺寸约2.0×1.2×1.0mm),适配自动贴装生产线,适合高密度PCB布局。

典型应用场景包括:

  1. 消费电子:手机、平板、智能穿戴的充电接口、数据端口过压保护;
  2. 通信设备:路由器、交换机、光模块的电源及信号端口防护;
  3. 工业控制:PLC模块、传感器节点、小型电机驱动电路的瞬态防护;
  4. 车载小系统:汽车中控辅助电路、车载充电器的低中压过压保护(需结合车载温度范围验证)。

四、产品优势与典型应用示例

4.1 核心优势

  • 品牌可靠性:CJ(长电)作为国内半导体龙头,器件一致性好、质量稳定,通过多项行业认证;
  • 响应速度快:TVS固有的纳秒级响应,可瞬间抑制尖峰脉冲,保护敏感器件;
  • 参数匹配性:62V Vrwm与102V钳位电压的搭配,适配多数12V~48V电源系统;
  • 封装紧凑:SMAG封装节省PCB空间,贴合小型化设备设计趋势。

4.2 典型应用示例

以路由器电源端口防护为例:路由器电源输入为12V/1A,若遭遇雷击感应或电源浪涌,瞬态电压可能飙升至100V以上。CJSMAJ64A并联在电源端口与地之间,当浪涌电压超过78.54V击穿电压时,器件快速导通,将电压钳位在102V以下,避免电源芯片、滤波电容损坏,确保路由器稳定运行。

五、使用注意事项

  1. 极性确认:单向TVS需注意正负极(封装上通常有标识),反向安装会失去防护作用;
  2. 温度适配:常规工作温度范围为-55℃~150℃,车载等高温场景需确认温度余量;
  3. 焊接规范:遵循SMT焊接工艺,焊接温度(约260℃)及时间需符合标准,避免热损伤;
  4. 并联扩展:若需更高功率防护,可并联多个器件(需保证参数一致性),但需避免过流。

CJSMAJ64A凭借可靠的防护性能、紧凑封装及稳定质量,成为低中压电路过压防护的高性价比选择。

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