WMSIC Electronic Components

CJ CJSMBJ15CA

ModelCJSMBJ15CA
PackageSMBG
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 CJSMBJ15CA
Type
CJ
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CJSMBJ15CA
Electronic Component
1
Package
SMBG
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.196g
Electronic Component
1
Electronic Component
BM0264222711
Operating Temperature
55℃~+150℃
Voltage
24.2V
Current(Ir)
5uA
Voltage(VBR)
18.49V
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.

CJSMBJ15CA 瞬态抑制二极管(TVS)产品概述

CJSMBJ15CA是江苏长电(CJ)推出的双向瞬态抑制二极管(TVS),属于SMBG封装系列,专为15V系统的瞬态过压防护设计,具备宽温范围、低漏流、高脉冲耐受能力等特点,可有效抑制雷电、静电放电(ESD)、开关浪涌等瞬态脉冲对敏感电子电路的损坏。

一、产品基本定位与核心优势

作为SMBG封装的TVS器件,CJSMBJ15CA针对中低电压(15V级)电路的防护需求优化设计,核心优势体现在:

  • 双向导通特性:无需区分正负极,简化电路设计与焊接工艺;
  • 宽温度适用范围:-55℃~+150℃,满足工业、汽车(若符合AEC-Q101)等严苛环境需求;
  • 高脉冲耐受能力:峰值脉冲功率达600W,可应对常见浪涌冲击;
  • 低反向漏电流:仅5μA(典型值),对系统正常工作功耗影响极小。

二、核心电性能参数详解

CJSMBJ15CA的关键参数围绕“过压防护的有效性”与“系统兼容性”设计,核心参数如下:

1. 电压类参数(防护阈值与钳位能力)

  • 反向截止电压(V₍RWM₎):15V
    系统正常工作时,TVS处于截止状态的最大反向电压,需与被保护电路的工作电压匹配(如15V供电系统),确保器件不影响电路正常运行。
  • 击穿电压(V₍BR₎):18.49V(典型值)
    瞬态过压超过该值时,TVS快速导通,将过压钳位至安全范围,是器件启动防护的阈值。
  • 钳位电压(V₍C₎):24.2V(@I₍PP₎=24.6A)
    峰值脉冲电流(I₍PP₎)作用下,TVS两端的最高电压,直接决定后级电路的安全上限(需低于被保护器件的最大耐压)。

2. 脉冲耐受能力

  • 峰值脉冲电流(I₍PP₎):24.6A(@10/1000μs波形)
    10/1000μs是国际通用的浪涌波形标准(上升时间10μs,半高宽1000μs),24.6A的峰值电流耐受能力可覆盖多数电源端口、信号接口的浪涌冲击。
  • 峰值脉冲功率(P₍PP₎):600W(@10/1000μs波形)
    脉冲功率是评估TVS防护能力的核心指标,600W满足中功率电路的浪涌防护需求(如工业控制模块、通信设备电源)。

3. 其他关键参数

  • 反向漏电流(I₍R₎):5μA(@V₍RWM₎=15V)
    低漏流特性可避免TVS对低功耗电路的额外功耗消耗,适合电池供电、医疗电子等对功耗敏感的场景。
  • 工作温度范围:-55℃~+150℃
    宽温范围覆盖了工业级(-40℃+85℃)与汽车级(-55℃+150℃)的环境要求,可在高温、低温环境下稳定工作。

三、封装与可靠性设计

CJSMBJ15CA采用SMBG表面贴装封装,该封装具备以下特点:

  • 尺寸紧凑:典型尺寸为2.5mm×3.0mm×1.0mm,适合高密度PCB布局(如小型化通信设备、便携电子);
  • 无铅环保:符合RoHS指令,满足欧盟环保要求;
  • 焊接可靠性:支持回流焊工艺,焊接温度耐受范围宽(峰值温度260℃/10s),可兼容主流SMT生产线;
  • 机械强度:封装结构坚固,可承受常规机械应力(如振动、冲击),适合车载、工业等振动环境。

四、典型应用场景

CJSMBJ15CA的参数特性使其适用于多种15V系统的过压防护,典型场景包括:

  1. 通信设备:路由器、交换机、光模块的15V电源端口、以太网接口防护;
  2. 工业控制:PLC模块、传感器节点、伺服驱动器的15V供电电路防护;
  3. 消费电子:小型充电设备(如15V快充适配器)、智能家居终端的电源/信号接口防护;
  4. 汽车电子:车载15V辅助电源、CAN总线接口防护(若通过AEC-Q101认证);
  5. 医疗电子:便携式医疗设备(如监护仪、输液泵)的低功耗电路防护(低漏流优势)。

五、选型与应用注意事项

为确保防护效果与系统稳定性,应用时需注意以下几点:

  1. 电压匹配:V₍RWM₎需≥被保护电路的正常工作电压(如15V系统直接匹配),避免器件误导通;
  2. 功率/电流匹配:根据系统最大浪涌功率(或电流)选择TVS,确保P₍PP₎≥浪涌功率(需考虑降额);
  3. 封装适配:SMBG封装需预留足够的PCB焊盘空间,避免焊接缺陷;
  4. 极性确认:双向TVS无需区分正负极,简化设计流程;
  5. 温度降额:高温环境(如>125℃)下,需适当降低TVS的工作电压或功率,避免参数漂移。

CJSMBJ15CA凭借平衡的防护能力、宽温特性与紧凑封装,成为15V系统过压防护的高性价比选择,适用于对可靠性、功耗敏感的电子设备设计。

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