WMSIC Electronic Components

CJ SMBJ33CA

ModelSMBJ33CA
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 SMBJ33CA
Type
CJ
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
SMBJ33CA
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
BM0233613173
Voltage
53.3V
Current(Ir)
5uA
Voltage(VBR)
40.6V
Electronic Component
Electronic Component
Electronic Component
3000

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

SMBJ33CA(CJ)产品概述

一、产品简介

SMBJ33CA 是 CJ(江苏长电/长晶)推出的一款双向瞬态抑制二极管(TVS),用于抑制瞬态过电压事件(如雷击、开关电弧、感性负载反冲等)对敏感电子设备的损伤。该器件为 SMBG 封装,适合中等能量的浪涌防护场合,兼具体积小、响应快、安装方便的优点。

二、主要电气参数(典型/标称)

  • 极性:双向(可在正、负方向对称钳位)
  • 反向截止电压 Vrwm:33 V(工作稳态电压)
  • 击穿电压(Vz):约 40.6 V
  • 钳位电压 Vc:53.3 V(在测试条件下)
  • 峰值脉冲电流 Ipp:11.3 A(10/1000 μs 浪涌波形)
  • 峰值脉冲功率 Ppp:600 W(10/1000 μs)
  • 反向电流 Ir:约 5 μA(在 Vrwm 条件下)
  • 器件类型:TVS 二极管(瞬态电压抑制)

以上参数为器件典型/标称值,具体极限和测试条件应参见 CJ 原厂数据手册。

三、产品特性与优势

  • 双向抑制:适用于交流或可能出现两极性脉冲的系统,省去了反向并联电路的复杂度。
  • 高能量吸收能力:Ppp 600 W(10/1000 μs)可以处理工业和通信环境中常见的浪涌冲击。
  • 低漏电流:Vrwm 下 Ir 仅微安级,适合对待机功耗敏感的设备。
  • 快速响应:TVS 自身对瞬态事件响应极快,能在浪涌初期钳制电压峰值,保护后端器件。
  • SMBG 封装:适合表面贴装,便于批量生产与可靠焊接。

四、典型应用场景

  • 工业电源总线与配电系统(24 V、48 V 等常见电压等级的防护)
  • 通信接口与基站设备的浪涌保护
  • 开关电源输入端、直流母线保护
  • 继电器或电磁阀驱动回路的反向尖峰抑制
  • 其他需要中等能量浪涌防护的消费类或工业电子设备

五、设计与使用建议

  • 选型要点:工作电压 Vrwm 应略高于正常工作电压以避免常态导通;钳位电压应低于被保护电路能承受的最大电压。
  • 布局建议:将 TVS 尽量靠近受保护端口或连接器焊接,缩短走线和环路面积以降低寄生电感。
  • 散热与焊接:SMBG 封装受限于散热面积,在高能量事件频繁出现的场合需在 PCB 上增加铜箔面积或散热路径。遵循制造商推荐的回流焊工艺。
  • 浪涌波形匹配:额定 Ppp 与 Ipp 基于 10/1000 μs 波形,若系统面临 8/20 μs 等不同波形的冲击,应评估是否需要更高能量等级的保护元件或并联/级联设计。
  • 可靠性与测试:对关键应用建议做实际系统级浪涌试验,并检查器件在多次冲击后的性能退化情况。

六、注意事项

  • 本概述基于给定的典型参数,具体极限值、温度特性、冲击次数能力等应参考 CJ 原厂完整数据手册与应用说明。
  • 若用于汽车或需满足特殊认证的场合,请确认器件是否通过相应的认证(如 AEC-Q101 等)。

如需我提供更详细的电气特性曲线、封装尺寸或 PCB 布局参考建议,可告知用途与工作环境,我将基于该信息给出更具体的选型与应用方案。

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