WMSIC Electronic Components

MDD BZT52C20

ModelBZT52C20
PackageSOD-123
BrandMDD
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+

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Technical data

Product details

19 specifications

Core information

Product name
MDD BZT52C20
Type
MDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MDD
Electronic Component
BZT52C20
Electronic Component
1
Package
SOD-123
Electronic Component
Zener Diode
Electronic Component
0.035g
Electronic Component
1
(Zzt)
50Ω
Electronic Component
BM0257590624
Diode
1
Current(Ir)
100nA@15V
Power Dissipation(Pd)
500mW
Electronic Component
19V~21V
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.

BZT52C20稳压二极管产品概述

BZT52C20是MDD品牌推出的一款独立式稳压二极管,以20V标称稳压值、500mW最大耗散功率为核心特性,采用SOD-123小型表面贴装封装,适合对体积、功耗和稳压精度有平衡需求的电子电路设计。

一、产品核心身份信息

BZT52C20属于硅基稳压二极管,采用独立式配置(单个封装内仅集成1只稳压管),无并联/串联组合,电路设计灵活度高,可根据需求单独接入单路稳压或电压基准电路。品牌为MDD,型号命名中“BZT52”代表稳压二极管系列,“C20”明确20V标称稳压值,是工业级/消费级电子设备中常见的稳压器件之一。

二、关键电气参数解析

BZT52C20的电气参数围绕“稳定、低耗、小型化”设计,核心参数的实际意义如下:

  • 稳压值:标称值20V,范围19V~21V(精度±5%),满足多数通用电路的稳压需求,无需额外精密校准即可实现稳定的电压输出;
  • 反向漏电流(Ir):15V反向电压下仅100nA,属于低漏电流设计,在静态功耗敏感的电路(如电池供电设备)中,可避免额外电流损耗;
  • 最大耗散功率(Pd):500mW(0.5W),是器件允许的最大功率损耗,实际使用需结合环境温度降额(如25℃环境下建议不超过400mW);
  • 动态阻抗(Zzt):50Ω,低动态阻抗意味着当负载电流变化时,稳压值波动极小(如负载电流变化1mA时,稳压值变化约0.05V),适合需要稳定电压基准的场景(如ADC参考电压)。

三、封装与物理特性

BZT52C20采用SOD-123封装,这是一款小型表面贴装(SMD)封装,尺寸约为2.9mm×1.6mm×1.1mm,体积仅为传统直插封装的1/5左右,适合高密度PCB布局(如智能手机、智能穿戴设备的主板)。封装采用塑料外壳,耐温范围为-55℃~150℃,满足工业级和消费级设备的温度要求;焊接时需注意回流焊温度不超过260℃(持续时间≤30秒),避免封装变形或器件损坏。

四、典型应用场景

结合BZT52C20的参数特性,其主要应用于以下场景:

  1. 便携式电子设备稳压:如蓝牙音箱、智能手环的电源电路,作为次级稳压管将升压后的电压稳定在20V,低漏电流特性可延长电池续航;
  2. 微控制器(MCU)参考电压:为ADC模块提供稳定的20V基准,低动态阻抗保证采样精度,避免因负载变化导致的测量误差;
  3. 低功耗电路电压钳位:在传感器信号调理电路中,钳位输入电压至20V,防止过压损坏器件,同时低漏电流不影响信号传输;
  4. 通信设备辅助稳压:如路由器、交换机的电源模块,SOD-123小封装可节省PCB空间,满足高密度布局需求。

五、使用注意事项

为保证器件可靠性和使用寿命,使用时需注意以下几点:

  1. 功率降额:最大耗散功率500mW,实际使用时建议将功耗控制在400mW以内(如负载电流≤20mA,20V稳压下),避免过热;
  2. 反向电压限制:不要施加超过25V的反向电压(稳压值的1.25倍),防止器件反向击穿过强导致性能下降;
  3. PCB散热设计:SOD-123封装散热面积小,建议在焊盘周围增加铜箔(宽度≥1mm)辅助散热,降低器件温度;
  4. 静电防护:属于静电敏感器件,焊接和存储时需使用防静电工具,避免静电损坏。

BZT52C20凭借稳定的稳压性能、低功耗和小封装特性,成为消费电子、工业控制、通信等领域的通用稳压器件选择,适合快速原型开发和量产化设计。

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