WMSIC Electronic Components

SHIKUES SMBJ30CA

ModelSMBJ30CA
PackageSMB(DO-214AA)
BrandSHIKUES
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SHIKUES SMBJ30CA
Type
SHIKUES
Minimum package
3000

Technical parameters

Electronic Component
SHIKUES
Electronic Component
SMBJ30CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.23g
Electronic Component
1
Cj- Capacitor
390pF
Electronic Component
BM0265569957
Operating Temperature
65℃~+150℃
Voltage
48.4V
Current(Ir)
1uA
Voltage(VBR)
36.8V
Electronic Component
3000

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

SMBJ30CA 瞬态抑制二极管(TVS)产品概述

一、产品基本定位与品牌背景

SMBJ30CA是SHIKUES(时科) 推出的一款双向瞬态抑制二极管(TVS),属于SMB封装系列的通用型过压保护器件。TVS作为电路中关键的瞬态防护元件,核心作用是快速响应并钳制过压脉冲,避免敏感电子元器件(如IC、传感器、电源模块等)因雷击、静电放电(ESD)、开关浪涌等瞬态过压而损坏。SMBJ30CA凭借宽温范围、低漏损及双向保护特性,广泛适配工业、消费电子、通信等多领域的低电压电路防护需求。

二、核心电性能参数详解

SMBJ30CA的电性能参数经过严格测试,关键指标如下(均为典型值):

  1. 极性与工作电压:双向适配,简化设计
    采用双向极性设计,无需区分正负极,可直接并联在被保护电路两端,避免布线时的极性错误;反向截止电压(Vrwm)为30V,即正常工作状态下可承受的最大反向直流电压,确保电路在额定电压下稳定运行而不触发保护。
  2. 过压触发与钳位:精准防护,快速响应
    • 击穿电压(Vbr):36.8V(过压时器件开始导通,进入保护状态);
    • 钳位电压(Vc):48.4V(峰值脉冲下的最大钳位电压,即过压时被保护电路的电压上限,需低于敏感器件的耐压值)。
  3. 脉冲耐受能力:高功率冲击,重复可靠
    • 峰值脉冲功率(Ppp):600W@10/1000μs(10/1000μs标准浪涌脉冲下的最大耐受功率,该波形模拟实际开关浪涌/雷击的典型特性);
    • 峰值脉冲电流(Ipp):12.4A@10/1000μs(对应脉冲下的最大峰值电流,可有效泄放瞬态过流)。
  4. 低漏损与结电容:兼顾功耗与信号
    • 反向漏电流(Ir):1μA(Vrwm下的反向漏电流极低,不会增加电路静态功耗,适合低功耗场景);
    • 结电容(Cj):390pF(中等结电容,适配中低频电路,若需高频应用需考虑低容值TVS)。

三、封装形式与物理特性

SMBJ30CA采用SMB(DO-214AA)表面贴装封装,具有以下特点:

  • 尺寸紧凑:典型封装尺寸约2.3mm×3.2mm×1.5mm,节省PCB空间,适配高密度电路设计;
  • 贴装便捷:符合自动化回流焊/波峰焊工艺要求,适合批量生产;
  • 引脚可靠:引脚间距与布局适配通用焊接设备,焊接后机械强度稳定。

四、典型应用场景

SMBJ30CA的参数特性决定其适用于以下场景:

  1. 低电压直流系统防护:如12V/24V电源模块、工业PLC输入输出端口、小型家电电源接口;
  2. 通信设备接口:路由器、机顶盒、无线传感器节点的信号/电源端口浪涌防护;
  3. 工业控制电路:传感器模块、执行器接口的瞬态过压保护(宽温范围适配工业现场极端环境);
  4. 消费电子终端:智能穿戴、小型家电的静电放电(ESD)与浪涌防护。

五、可靠性与环境适应性

  1. 宽温工作范围:-65℃~+150℃,覆盖工业级、部分车载低温环境的温度需求,无需额外散热设计;
  2. 重复防护能力:TVS为可恢复型器件,可多次承受瞬态过压脉冲而不损坏,远优于一次性保险丝;
  3. 高可靠性:SHIKUES的器件经过严格老化与可靠性测试,满足工业级质量标准。

六、应用注意事项

  1. 选型匹配:Vrwm需高于系统正常工作电压(如24V系统选30V以上Vrwm),钳位电压Vc需低于被保护器件的最大耐压;
  2. 结电容考量:390pF结电容不适合GHz级高频信号(如射频模块),需更换低容值TVS;
  3. 焊接规范:回流焊峰值温度≤260℃、时间≤10s,避免热损伤;
  4. 并联扩展:若需更高脉冲电流,可并联多个SMBJ30CA,但需采用相同批次器件确保均流。

SMBJ30CA以高性价比、稳定可靠的特性,成为低电压电路瞬态防护的优选器件之一。

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