WMSIC Electronic Components

CJ BZX584C33

ModelBZX584C33
PackageSOD-523
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 25+

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Technical data

Product details

19 specifications

Core information

Product name
CJ BZX584C33
Type
CJ
Minimum package
8000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
BZX584C33
Electronic Component
1
Package
SOD-523
Electronic Component
Zener Diode
Electronic Component
0.011g
Electronic Component
1
(Zzk)
325Ω
(Zzt)
80Ω
Electronic Component
BM0227654048
Diode
1
Current(Ir)
100nA
Power Dissipation(Pd)
150mW
Electronic Component
31V~35V
Electronic Component
55℃~+150℃

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

BZX584C33 产品概述

一、产品简介

BZX584C33 为独立式稳压二极管(Zener Diode),标称稳压值 33V,允许稳压范围 31V~35V。由 CJ(江苏长电/长晶)生产,采用 SOD-523 超小封装,适用于体积受限且要求低耗散的小功率稳压与电压钳位场合。典型反向漏电流 100nA@25V,工作结温范围宽(-55℃ ~ +150℃),适配工业级温度环境。

二、主要特性

  • 标称稳压值:33V(范围 31V~35V)
  • 低反向电流:Ir = 100nA(在 25V 条件下)
  • 低功耗设计:耗散功率 Pd = 150mW,适合小功率应用
  • 阻抗特性:Zzk = 325Ω(阶跃/拐点阻抗),Zzt = 80Ω(稳态/测试阻抗)
  • 宽工作温度:-55℃ ~ +150℃
  • 小体积封装:SOD-523,便于高密度贴装

三、电气参数重点说明

  • 稳压精度与阻抗:33V 的标称值在实际使用中会随电流和温度变化。Zzk(325Ω)表示在较低工作点或拐点附近的阻抗较高,Zzt(80Ω)表示在稳态测试电流下的小信号阻抗较低。该器件适合做一般稳压、钳位或参考用途,但不建议用于需要高精度、低噪声参考的场合。
  • 漏电流与漏耗:100nA 的反向电流表明在常态下泄漏非常小,适合对静态电流敏感的电路。但需注意随温度升高漏电流会增加,应根据工作温度做余量设计。
  • 功耗限制:Pd = 150mW,属于小功率级别,长时间或在高结温下运行会受限,需通过外接限流电阻或降额使用避免过热。

四、封装与可靠性

  • SOD-523 超小型封装适合表面贴装(SMT),利于空间受限的移动设备、便携仪表及高密度电路板应用。
  • 工作结温上限 +150℃,显示出良好的耐热能力,但由于整体耗散功率有限,实际应用中应保证良好PCB热散设计与合理散热路径。
  • 推荐在器件附近预留适量焊盘铜面积以帮助散热,并遵循厂商的焊接温度规范以避免封装应力。

五、典型应用场景

  • 小功率基准/稳压:作为低功率电源的简易稳压元件,用于提供约 33V 的电压钳位或参考。
  • 过压保护与浪涌抑制:在输入端或信号线上用于抑制瞬态过压,保护后级电路。
  • 测试与检测电路:用于需要固定阈值触发的检测电路或保护电路。
  • 手持设备与消费电子:适合对体积和成本敏感、工作电流较小的产品设计。

六、选型与使用建议

  • 功率余量:实际应用中建议按 50% 或更低的 Pd 余量运行,避免长期在 150mW 附近工作。
  • 串联限流:稳压时应配合串联限流电阻以控制器件通过电流,避免过大电流导致过热。
  • 温度影响:在高温环境下重新评估漏电流和稳压点漂移,必要时选择温度系数更低的替代器件。
  • 精度要求:若电路要求高精度参考,应选用专用带激励电流的精密基准源而非此类小功率稳压二极管。
  • 封装注意:SOD-523 焊接时注意回流曲线与防静电措施,避免因不良焊接或静电损伤导致失效。

七、结论与注意事项

BZX584C33(CJ/SOD-523)为体积小、漏电低的小功率稳压二极管,适用于空间受限且工作电流较小的稳压、钳位与保护场合。其较高的阻抗值和有限的耗散功率决定了更适合低功耗、非高精度的应用场景。设计时应考虑功率降额、热管理与温度对参数的影响,以保证长期可靠性和稳定性。

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