WMSIC Electronic Components

ST BZX84C10 Zener diode BZX84C10

ModelBZX84C10
PackageSOT-23(SOT-23-3)
BrandST
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ST BZX84C10
Type
SOT-23(SOT-23-3)
Minimum package
3000

Technical parameters

Electronic Component
ST
Electronic Component
BZX84C10
Electronic Component
1
Package
SOT-23(SOT-23-3)
Electronic Component
Zener Diode
Electronic Component
0.028g
Electronic Component
1
(Zzt)
20Ω
Electronic Component
BM0257710332
Diode
1
Current(Ir)
200nA@7V
Power Dissipation(Pd)
350mW
Electronic Component
9.4V~10.6V
Electronic Component
65℃~+150℃
Electronic Component
3000
Electronic Component
10V

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

BZX84C10(ST 先科)产品概述

一、产品简介

BZX84C10 是一款独立式稳压二极管(Zener diode),标称稳压值 10V,稳压值范围 9.4V~10.6V,封装为 SOT-23(SOT-23-3)。该器件用于小功率稳压、参考电压源、浪涌钳位与信号钳位等场合,具有漏电流小、动态阻抗低的特点,适合表面贴装工艺。

二、主要电气参数

  • 标称稳压值(Vz):10V(范围 9.4V~10.6V)
  • 反向漏电流(Ir):200nA @ 7V(极低的静态漏流,适合低电流应用)
  • 阻抗(Zzt):20 Ω(在规定测试电流下的动态阻抗,体现稳压性能)
  • 功耗(Pd):350 mW(耗散功率上限,需在电路设计中留有裕度)
  • 工作结温度范围:-65 ℃ ~ +150 ℃
  • 封装:SOT-23(三脚小封装),适合自动贴装生产线
  • 品牌:ST(先科)

三、典型用途与电路形式

  • 稳压参考:作为低成本的基准电压源,用于模拟电路或微控制器外围电源的二次稳压。
  • 并联稳压(分流式稳压):在有限电流条件下,通过串联限流电阻与 BZX84C10 并联实现稳压输出。
  • 浪涌/钳位保护:用于限制瞬态电压,保护后端敏感器件。
  • 波形裁剪与参考基准:在信号处理电路中用于电平限制或提供参考点。

常见串联电阻计算:Rs = (Vin − Vz) / Iz,其中 Iz 为稳压二极管工作电流;稳压二极管功耗 Pd = Vz × Iz,应确保 Pd ≤ 350 mW,并考虑环境与散热条件对 Pd 的影响。

四、设计与热管理要点

  • 最大工作电流的理论上限可由 Iz(max) ≈ Pd / Vz 估算,即 350 mW / 10 V ≈ 35 mA,但该值为在良好散热条件下的理论极限。实际电路应留有安全裕度,并考虑 PCB 散热、环境温度及封装散热系数。
  • 在高温或封装散热受限情况下,应降低稳流以避免器件过热并导致寿命下降。
  • 由于 Zzt 为 20 Ω,负载或输入变化时会产生一定的电压漂移,要求精密参考场合慎重评估或考虑更低阻抗器件。

五、封装与可靠性

SOT-23 封装体积小、适合自动化贴装,但散热能力有限,适合低功耗场合。器件工作结温覆盖 -65 ℃ ~ +150 ℃,适应较宽温度范围的工业级应用。具体引脚排列与焊接规范请参考 ST(先科)官方资料和数据手册。

六、选型建议

  • 若需更精确的参考电压或更高功率能力,可选择容差更小或功率更高的稳压二极管。
  • 对于超低漏电或高稳定性场合,考虑使用专用基准源(带温度补偿的参考电压 IC)。
  • 在进行 PCB 布局时,尽量保证良好散热路径和稳定的接地,以充分发挥 BZX84C10 的稳压性能。

总体而言,BZX84C10(ST)是一款成本低、适用于小功率稳压与钳位的通用型 Zener 二极管,适合在空间受限且功耗需求不高的电子系统中作为可靠的电压参考或保护元件。若需精准参数(例如测试电流 Iz、温度系数、引脚定义及典型特性曲线),请参考官方数据手册。

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