WMSIC Electronic Components

CJ CJSMAJ22A

ModelCJSMAJ22A
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 CJSMAJ22A
Type
CJ
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CJSMAJ22A
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
BM0265022354
Voltage
35.1V
Current(Ir)
5uA
Voltage(VBR)
26.88V
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.

CJ CJSMAJ22A 单向TVS管产品概述

CJSMAJ22A是江苏长电科技(CJ)推出的单向瞬态电压抑制二极管(TVS),专为低电压电路的瞬态过压防护设计,采用小型化SMAG表面贴装封装,兼具高功率密度、快速响应和低漏电流特性,广泛适配消费电子、通信设备、小型电源模块等场景的过压保护需求。

一、产品核心定位与典型应用场景

TVS管的核心作用是在电路遭遇瞬态浪涌(如静电放电、雷击感应、电源开关噪声)时,快速导通并钳位电压,避免后级敏感器件(如MCU、传感器、接口芯片)被击穿损坏。CJSMAJ22A作为单向防护器件(仅对指定极性的浪涌有效,需匹配电路极性),其典型应用场景包括:

  1. 消费电子接口防护:手机、平板、笔记本的USB Type-C/A接口,防止插拔静电或电源浪涌损坏接口控制器;
  2. 小型电源模块:5V/12V电源输出端,抑制开关电源瞬态尖峰,保护负载电路;
  3. 通信设备信号线路:蓝牙、WiFi模块的天线馈线、数据总线,防止射频浪涌干扰或损坏收发芯片;
  4. 电池充电电路:移动电源、蓝牙耳机的充电端口,防护充电过程中的过压冲击。

二、关键电气参数及性能优势

CJSMAJ22A的参数设计精准匹配低电压防护需求,核心参数及优势如下:

1. 电压防护阈值稳定

  • 反向截止电压(Vrwm):22V:电路正常工作时(反向偏置)不导通,保证信号/电源传输无干扰;
  • 击穿电压(Vbr):26.88V(典型值):瞬态电压超22V后,TVS纳秒级击穿导通,快速启动防护;
  • 钳位电压(Vc):35.1V(@1A测试电流):导通后将浪涌电压钳位在35.1V以内,远低于后级器件(如MCU耐压≤50V)的最大耐受值,有效避免损坏。

2. 浪涌承受能力充足

  • 峰值脉冲电流(Ipp):11.3A(@10/1000μs波形):可承受10/1000μs标准浪涌(模拟雷击或大型开关浪涌);
  • 峰值脉冲功率(Ppp):400W(@10/1000μs波形):小封装下实现高功率密度,适配高密度PCB设计。

3. 低功耗与高稳定性

  • 反向漏电流(Ir):5μA(@Vrwm=22V):漏电流极低,不增加电路静态功耗,适合电池供电设备(如蓝牙耳机);
  • 参数一致性好:长电工艺保证击穿/钳位电压离散性≤±5%,同一批次产品防护能力无差异。

三、封装设计与可靠性表现

CJSMAJ22A采用SMAG表面贴装封装(近似SMA封装的小型化 variant),尺寸约2.9×1.8×1.1mm,设计优势显著:

  1. 小型化适配高密度PCB:适合智能手机、智能穿戴等空间严苛产品,不占用额外布局空间;
  2. 焊接可靠性高:符合RoHS无铅标准,支持回流焊/波峰焊,260℃(10秒)焊接温度耐受,避免虚焊;
  3. 宽温与环境耐受性:-55℃~+150℃宽温范围稳定工作,环氧树脂封装抗冲击、抗振动,适配户外/工业场景。

四、品牌背书与品质保障

江苏长电科技(CJ)是国内半导体封装测试龙头,CJSMAJ22A依托其制造优势,具备以下保障:

  1. 成熟工艺与高良率:全自动生产线管控,产品良率≥99.5%;
  2. 权威认证:通过ISO 9001、工业级可靠性认证,适配消费电子与工业场景;
  3. 稳定供货:大规模产能满足批量生产需求,交货周期短。

总结

CJSMAJ22A是一款高性能、小体积、高可靠性的单向TVS管,精准匹配低电压电路的瞬态过压防护。其稳定的电压阈值、充足的浪涌承受能力和低漏电流特性,使其成为消费电子、通信、电源领域的理想选择——既不影响电路正常工作,又能有效抵御静电、浪涌干扰,是敏感电子器件防护的可靠方案。

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