WMSIC Electronic Components

FUXINSEMI SMCJ33CA

ModelSMCJ33CA
PackageSMC(DO-214AB)
BrandFUXINSEMI
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
FUXINSEMI SMCJ33CA
Type
FUXINSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FUXINSEMI
Electronic Component
SMCJ33CA
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.374g
Electronic Component
1
Electronic Component
BM0265332185
Operating Temperature
55℃~+150℃
Voltage
53.3V
Current(Ir)
5uA
Voltage(VBR)
36.7V
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.

SMCJ33CA 瞬态抑制二极管(TVS)产品概述

SMCJ33CA是富芯森美(FUXINSEMI) 推出的一款双向瞬态抑制二极管(TVS),采用SMC(DO-214AB)表面贴装封装,专为电路瞬态过压浪涌保护设计,可快速响应并钳位电压峰值,有效防护敏感电子元件免受雷击、静电放电(ESD)、开关浪涌等干扰损坏。

一、产品核心属性

SMCJ33CA属于中功率TVS管,具备以下核心特征:

  • 极性:双向导通,可同时抑制正负方向瞬态浪涌;
  • 封装形式:SMC(DO-214AB)表面贴装,体积紧凑(典型尺寸约3.0×5.0×2.2mm),适配高密度PCB布局;
  • 品牌:FUXINSEMI(富芯森美),专注保护器件研发,产品可靠性符合工业级标准;
  • 功能定位:瞬态过压保护,通过快速击穿分流,将浪涌电压钳位在安全范围,避免后级元件击穿。

二、关键电性能参数解读

SMCJ33CA的电性能参数经严格测试,满足多场景保护需求,核心参数如下:

  1. 反向截止电压(Vrwm):33V
    正常工作时可承受的最大反向电压,此时TVS管截止,漏电流极小,不影响电路运行。
  2. 击穿电压(Vbr):36.7V
    浪涌电压超过该值时,TVS管快速击穿导通,启动过压保护。
  3. 钳位电压(Vc):53.3V
    浪涌峰值时器件两端的最大电压,需低于被保护元件耐压(如IC、MOS管),确保后级安全。
  4. 峰值脉冲电流(Ipp):28.1A(@10/1000μs波形)
    10/1000μs标准浪涌下的最大承受电流(上升10μs、半峰值1000μs),覆盖多数工业浪涌场景。
  5. 峰值脉冲功率(Ppp):1.5kW
    浪涌峰值耗散功率,适配中功率电路(如电源端口、通信接口)的保护需求。
  6. 反向漏电流(Ir):5μA(典型值)
    正常工作时的漏电流,极小值降低静态功耗,不影响电路效率。

三、环境适应性与可靠性

SMCJ33CA具备优异的工况适配性:

  • 工作温度范围:-55℃ ~ +150℃
    覆盖工业级宽温,适用于户外、车载、高温车间等极端环境;
  • 响应速度:ns级(典型<1ns)
    瞬间抑制浪涌,避免电压峰值传递到后级;
  • 机械可靠性:兼容回流焊工艺,抗振动、冲击符合IEC 60068标准,适合工业设备振动环境。

四、典型应用场景

SMCJ33CA的双向保护与宽温能力,使其广泛应用于:

  1. 工业控制:PLC接口、传感器模块、电机驱动的浪涌防护;
  2. 汽车电子:车载音响、CAN总线、胎压监测系统(TPMS)的过压保护(适配车载温区);
  3. 消费电子:手机USB-C接口、笔记本电源端口的ESD与浪涌防护;
  4. 通信设备:路由器、交换机以太网接口、光模块电源端的干扰抑制;
  5. 电源系统:开关电源输出、UPS的浪涌钳位,保护负载设备。

五、选型与应用注意事项

  1. 电压匹配:Vrwm需高于电路正常电压(如33V适配24V/30V电路),避免误导通;
  2. 钳位验证:Vc(53.3V)需低于被保护元件耐压(如IC耐压≥60V即可适配);
  3. 功率覆盖:Ppp(1.5kW)需匹配最大浪涌功率,高浪涌场景可并联器件;
  4. 布局建议:靠近被保护元件安装,缩短引线(降低电感影响),确保接地可靠。

SMCJ33CA凭借双向保护、宽温能力与紧凑封装,成为中功率电路瞬态过压保护的高性价比选择,可有效提升电子设备抗干扰能力与可靠性。

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