WMSIC Electronic Components

CJ CJSMAJ11CA

ModelCJSMAJ11CA
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 CJSMAJ11CA
Type
CJ
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CJSMAJ11CA
Electronic Component
1
Package
SMAG
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.112g
Electronic Component
1
Electronic Component
BM0265694837
Voltage
18V
Current(Ir)
5uA
Voltage(VBR)
13.49V
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.

CJSMAJ11CA 瞬态抑制二极管(TVS)产品概述

一、产品定位与核心价值

CJSMAJ11CA是江苏长电(CJ)推出的双向瞬态抑制二极管(TVS),专为低压电路的浪涌过压防护设计。其核心作用是在电路遭遇瞬态浪涌(如静电放电、感应雷击、开关瞬态等)时,快速从高阻态切换至低阻态,将电压钳位在安全范围内,避免后端敏感电子元件(如MCU、传感器、接口芯片等)因过压损坏,是电子设备抗干扰防护的关键器件之一。

二、关键电气参数深度解析

该器件的电气参数经过优化,适配11V左右的低压系统,核心参数及意义如下:

  1. 极性:双向
    支持正负双向浪涌防护,无需区分正负极安装,简化电路设计,尤其适合双向信号传输(如RS485、USB差分信号)或电源线路的双向过压防护场景。
  2. 反向截止电压(Vrwm):11V
    正常工作状态下,器件能承受的最大反向电压(无击穿),确保在11V及以下电压时处于高阻态,不影响电路正常运行。
  3. 钳位电压:18V
    当浪涌电流达到峰值脉冲电流(22A)时,器件将电压钳位在18V以内,此电压远低于后端敏感元件的耐压极限(通常MCU耐压约15-20V),有效保护器件安全。
  4. 峰值脉冲电流(Ipp):22A@10/1000μs
    10/1000μs是国际标准浪涌波形(模拟雷击或开关瞬态),该参数表示器件在该波形下能承受的最大脉冲电流,可覆盖常见的中等强度浪涌场景。
  5. 峰值脉冲功率(Ppp):400W@10/1000μs
    对应波形下的最大浪涌功率承受能力,结合钳位电压可反推Ipp(P=V×I),验证参数一致性。
  6. 击穿电压:13.49V(典型值)
    反向电压达到该值时,器件开始击穿导通,处于“雪崩”状态,此时漏电流快速上升,实现电压钳位功能,击穿电压在Vrwm(11V)与钳位电压(18V)之间,符合TVS器件的参数逻辑。
  7. 反向漏电流(Ir):5μA(@Vrwm)
    正常工作电压下的漏电流极小,不会造成电路功耗增加或信号干扰,保证系统低功耗运行。

三、封装与物理特性

CJSMAJ11CA采用SMAG封装(长电自有封装型号,对应国际标准SOD-323封装),具有以下优势:

  • 小型化设计:封装尺寸约为2.0×1.25×1.0mm(典型值),适合高密度PCB布局,满足消费电子、小型工业设备的小型化需求;
  • 表面贴装工艺:兼容自动贴装设备,生产效率高,适合批量生产;
  • 无铅环保:符合RoHS、REACH等环保标准,满足全球市场准入要求;
  • 宽温适配:工作温度范围为-55℃~+150℃,可覆盖工业级及消费电子的宽温应用场景。

四、典型应用场景

该器件因双向防护、低钳位电压等特性,广泛应用于以下场景:

  1. 低压直流电源防护:12V车载电源、12V工业控制电源、消费电子充电电路(如手机Type-C充电口),防止电源线上的正向/反向浪涌损坏后端负载;
  2. 高速接口防护:USB 2.0/3.0接口、RS485/RS232通信接口、HDMI接口等双向信号线路,防护静电放电(ESD)及传输线浪涌;
  3. 工业控制电路:PLC输入输出模块、传感器信号线路,应对工业环境中的电磁干扰(EMI)及浪涌;
  4. 便携电子组件:蓝牙耳机、智能手表的充电/数据接口,小型化封装适配设备空间限制。

五、品牌与可靠性保障

CJSMAJ11CA由江苏长电科技(CJ) 生产,长电作为国内半导体封装测试龙头企业,具有以下优势:

  • 工艺成熟:TVS器件封装及制造工艺经过多年验证,产品一致性好,批次间参数波动小;
  • 标准测试:产品通过ESD(IEC 61000-4-2)、浪涌(IEC 61000-4-5)等行业标准测试,满足消费级及工业级应用的可靠性要求;
  • 本土化服务:国内库存充足,交货周期短,技术支持响应及时,适合国内客户批量采购。

总结:CJSMAJ11CA是一款高性价比的双向TVS管,兼具小型化、双向防护、低漏电流等优势,适配11V左右低压系统的过压防护需求,是消费电子、工业控制等领域的可靠选择。

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