WMSIC Electronic Components

TWGMC SMBJ33CA Bidirectional TVS Diode SMBJ33CA

ModelSMBJ33CA
PackageSMB
BrandTWGMC
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
TWGMC SMBJ33CA
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
SMBJ33CA
Electronic Component
1
Package
SMB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.155g
Electronic Component
1
Cj- Capacitor
390pF
Electronic Component
BM0265082558
Operating Temperature
65℃~+150℃
Voltage
53.3V
Electronic Component
IEC 61000-4-2
Current(Ir)
1uA

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

SMBJ33CA 瞬态抑制二极管(TVS)产品概述

SMBJ33CA是台湾迪嘉(TWGMC)推出的双向表面贴装瞬态抑制二极管(TVS),采用SMB封装(DO-214AA),专为低压电路的瞬态过压防护设计,可有效抑制静电放电(ESD)、浪涌脉冲等干扰,保护敏感电子元件免受损坏。

一、产品核心身份与定位

作为双向TVS器件,SMBJ33CA无需区分正负极,简化了电路设计与装配流程;其防护能力符合IEC 61000-4-2标准,同时具备宽温工作特性,可覆盖工业控制、汽车电子、消费电子等多领域的过压防护需求。

二、关键电气参数详解

SMBJ33CA的电气参数针对低压防护场景优化,核心参数如下:

  1. 截止与击穿特性:反向截止电压(Vrwm)为33V(正常工作最大反向电压);当电压升至40.6V(击穿电压Vbr)时,器件快速导通(响应时间ns级),进入钳位状态。
  2. 钳位与脉冲承受能力:峰值脉冲电流(Ipp)为11.3A(10/1000μs波形,10μs上升沿+1000μs半峰值时间),对应峰值脉冲功率(Ppp)600W;钳位电压(Vc)为53.3V,确保被保护电路电压不超安全阈值。
  3. 低功耗与电容特性:反向漏电流(Ir)仅1μA(33V下),正常工作时对电路功耗影响极小;结电容(Cj)390pF,适合对电容要求不极端的信号/电源线路。
  4. 宽温范围:工作温度覆盖**-65℃~+150℃**,满足工业级、汽车级等恶劣环境可靠性要求。

三、主要性能特点

  1. 双向防护,安装灵活:无需区分正负极,直接并联被保护线路两端,降低装配错误风险,简化布局。
  2. 高效过压抑制:ns级响应速度,瞬态过压发生时迅速导通,将电压钳位在安全范围,保护MCU、传感器等敏感元件。
  3. 宽温可靠性:-65℃~+150℃工作温度,通过高低温循环、高温存储测试,适配工业现场、车载环境等极端场景。
  4. 低漏电流设计:1μA反向漏电流,不干扰信号传输,无额外功耗损耗。
  5. 自动化兼容:SMB封装体积小(4.5×3.5×2.5mm)、无引线,兼容回流焊工艺,适合高密度PCB自动化贴装。

四、典型应用场景

SMBJ33CA的参数特性使其适用于以下场景:

  1. 工业控制:PLC输入输出接口、传感器信号线路的浪涌防护。
  2. 汽车电子:车载CAN/LIN总线、胎压监测传感器、显示屏的ESD与浪涌防护(宽温适配车载环境)。
  3. 消费电子:手机、平板USB接口、音频接口的静电防护(防止插拔ESD损坏)。
  4. 通信设备:路由器、交换机以太网接口、电源端口的瞬态浪涌抑制。
  5. 低压电源:≤33V直流电源的过压防护(避免电源波动/雷击感应损坏负载)。

五、封装与合规性说明

SMB封装(DO-214AA)为表面贴装无引线设计,符合RoHS环保标准(无铅无卤);产品通过IEC 61000-4-2静电放电测试,抗ESD能力强;同时满足工业级可靠性要求,可替代同类国际品牌SMBJ33CA型号。

六、总结

SMBJ33CA作为高性价比双向SMB封装TVS,凭借宽温工作、低漏电流、高效钳位等特点,为低压电路提供可靠的瞬态过压防护方案,适用于多领域电子设备设计,是电路保护的理想选择。

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