WMSIC Electronic Components

CJ BZX84C11

ModelBZX84C11
PackageSOT-23
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CJ BZX84C11
Type
CJ
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
BZX84C11
Electronic Component
1
Package
SOT-23
Electronic Component
Zener Diode
Electronic Component
0.032g
Electronic Component
1
(Zzk)
150Ω
(Zzt)
20Ω
Electronic Component
BM0227649266
Diode
1
Current(Ir)
100nA
Power Dissipation(Pd)
300mW
Electronic Component
10.4V~11.6V
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.

BZX84C11 产品概述

一、产品简介

BZX84C11 为独立式稳压二极管(齐纳二极管),由 CJ(江苏长电/长晶)品牌提供,封装为 SOT-23。其标称稳压值为 11V,允许范围 10.4V ~ 11.6V。反向漏电流 Ir 约为 100nA(@8V 测试条件),耗散功率 Pd 为 300mW。动态阻抗参数为 Zzt ≈ 20Ω、Zzk ≈ 150Ω,工作结温范围 -55℃ ~ +150℃,适合要求体积小、稳压精度一般且对功耗有一定限制的应用场景。

二、主要特性

  • 标称稳压:11V(范围 10.4V~11.6V)
  • 低反向漏电:Ir ≈ 100nA(@8V),适用于低漏电要求的参考源
  • 中等耗散功率:Pd = 300mW,适合小功率稳压与保护用途
  • 动态阻抗:Zzt = 20Ω(测试点处),可判断纹波抑制能力与输出阻抗
  • 宽工作温度:-55℃ ~ +150℃
  • 小型表面贴装:SOT-23,便于高密度 PCB 布局

三、电气使用建议

  • 最大稳态稳压电流近似由 Pd / Vz 决定:Iz_max ≈ 300mW / 11V ≈ 27mA。为保证器件寿命和温升,实际工作电流建议取远低于最大值(常见范围 1mA ~ 10mA),具体取值依据负载与稳定度要求决定。
  • 作为并联(分流)式稳压器时,系列限流电阻 Rs 应按 Rs = (Vin - Vz) / Iz 计算,并保证在任何工况下器件耗散不超过 Pd。增加余量以应对瞬态过压与环境温升。
  • 动态阻抗 Zzt 决定在工作电流下的稳压波动,Zzk 描述低电流拐点处的阻抗特性;实际电路中若需低噪声或低输出阻抗,应选取合适的工作电流并外加滤波电容。
  • 低漏电特性使其在微功耗参考或检测电路中表现良好,但在极低电流工作点(接近微安级)时需注意稳压精度会受漏电与拐点影响。

四、典型应用场景

  • 小功率分流稳压与参考电压源
  • 输入浪涌或过压钳位保护
  • 放大器偏置与基准电平产生
  • ADC、DAC 输入保护和电平限制
  • 工业控制、消费电子及通信终端的低成本稳压模块

五、封装与 PCB 布局建议

  • SOT-23 封装适合自动贴装,焊接时注意温度曲线符合无铅回流规范。
  • 为了降低结温并提高功耗能力,建议在器件周围增加铜箔散热区或在底层使用过孔导热到内层/底层铜箔。
  • 布局时将旁路/去耦电容靠近器件放置,以减小寄生电感并改善瞬态响应。

六、选型与可靠性注意事项

  • 若系统需要更精确或更大功率的参考,请考虑功率更高或公差更小的稳压器件(例如精密参考 IC 或功率齐纳)。
  • 长期可靠性需考虑结温管理与电应力缓冲;在高温或高脉冲能量环境下应进行热仿真与寿命评估。
  • 实际设计中建议参考 CJ 的完整数据手册,确认测试电流点、阻抗测量条件和典型特性曲线,并通过样片验证稳压性能与噪声指标。

如需基于具体输入电压、负载条件的限流电阻计算或 PCB 布局示意,可提供电路参数,我将给出针对性建议与计算。

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