WMSIC Electronic Components

YANGJIE BZT52B24

ModelBZT52B24
PackageSOD-123
BrandYANGJIE
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

13 specifications

Core information

Product name
YANGJIE BZT52B24
Type
SOD-123
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YANGJIE
Electronic Component
BZT52B24
Electronic Component
1
Package
SOD-123
Electronic Component
0.033g
Electronic Component
1
Electronic Component
BM0227791193
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.

BZT52B24稳压二极管产品概述

一、产品基本信息

BZT52B24是扬杰科技(YANGJIE)推出的小功率表面贴装稳压二极管,属于BZT52系列稳压管。型号中“B24”明确其标称稳压值为24V,封装采用SOD-123超小型表面贴装,适配高密度PCB设计需求。该器件定位为「轻负载稳压+过压保护」双功能器件,兼顾低功耗、宽温可靠性与基础稳压性能,广泛应用于工业控制、汽车电子、通信设备等领域。

二、核心电气参数详解

BZT52B24的参数设计围绕「稳压精度、低功耗、宽温适配」三大核心,具体解读如下:

1. 稳压性能参数

  • 稳压值与精度:标称24V,稳压范围23.52V~24.5V(偏差约±2%),满足多数对电压精度要求不苛刻(如±2%以内)的场景(如基准电压、信号钳位);
  • 动态阻抗(Zzt):70Ω(稳压工作时的动态电阻)。动态阻抗越小,负载变化对输出电压的影响越小——70Ω的阻抗在小功率稳压管中表现优异,负载电流在0~20mA范围内时,输出电压波动可控制在1.4V以内(70Ω×20mA=1.4V)。

2. 低功耗与漏电特性

  • 反向漏电流(Ir):100nA(18V反向偏置下)。该值远低于普通稳压管的μA级漏电流(如部分器件Ir≥1μA),能有效降低电路待机功耗,适合电池供电的便携式设备(如无线传感器节点、手持测试仪器);
  • 耗散功率(Pd):500mW(最大允许功耗)。结合24V稳压值,计算得最大负载电流≈21mA(Pd=Vzt×Iz → Iz=500mW/24V≈20.8mA),适配轻负载应用(如小电流基准、信号保护)。

3. 宽温可靠性参数

  • 工作结温范围:-55℃+150℃。该范围覆盖工业级(-40℃+85℃)与部分车载级(-40℃~+125℃)温度需求,能稳定工作于极端环境(如北方冬季户外设备、高温车间控制模块)。

三、封装与焊接可靠性

BZT52B24采用SOD-123封装,具有以下实用优势:

  • 超小型尺寸:封装尺寸约2.4mm×1.6mm×1.0mm,仅为普通直插稳压管的1/5,大幅节省PCB空间,适配高密度电路(如智能手机辅助电路、小型工业模块);
  • 焊接兼容性:支持回流焊、波峰焊等表面贴装工艺,焊接温度建议不超过260℃(回流焊峰值),避免高温损坏;引脚间距合理,虚焊率低;
  • 环保合规:符合RoHS 2.0与REACH标准,无铅无卤,适配全球市场需求。

四、典型应用场景

BZT52B24的参数特性决定了其适用于轻负载稳压、过压保护、基准电压三类核心场景:

1. 中高压基准电压源

在单片机AD采集、模拟电路中作为24V基准(如部分工业AD芯片参考输入范围0~24V),配合运放实现精准电压采集;例如PLC模拟量输入模块的基准源,保证采集精度。

2. 信号过压钳位保护

防止信号过冲损坏后端器件:

  • 通信电路:RS485总线信号端,钳位24V以上过压(静电放电、电源干扰);
  • 传感器模块:温度/压力传感器输出端,保护ADC不受现场干扰过压影响。

3. 小功率电源过压保护

并联于电源输出端,作为辅助过压保护:

  • 12V/24V电源:故障升压至24V以上时击穿分流,保护LED驱动、小功率MCU;
  • 电池系统:防止充电过压(如锂电池过充)对设备的损害。

4. 宽温环境应用

  • 汽车电子:车载显示屏信号保护电路(-40℃~+85℃);
  • 工业控制:户外传感器节点稳压电路(-55℃~+85℃)。

五、选型与使用注意事项

为保证器件可靠工作,需注意以下要点:

1. 负载电流限制

最大负载电流不得超过21mA,超限时需串联限流电阻(不建议并联多个器件)。

2. 限流电阻计算

必须串联限流电阻R,公式为:
R=(Vin - Vzt)/Iz
其中:Vin为输入电压,Vzt=24V,Iz建议选10~15mA(兼顾稳定性与功率)。
举例:Vin=30V,Iz=10mA → R=(30-24)/0.01=600Ω,电阻功率选1/8W以上(600Ω×(10mA)²=60mW)。

3. 温度补偿考虑

硅稳压管温度漂移约0.08mV/℃,24V器件漂移≈1.92mV/℃;高精度场景(如±0.1%)需配合运放+热敏电阻补偿。

4. 焊接与存储

  • 焊接:烙铁温度≤350℃(焊接时间≤3s),避免手工焊接过热;
  • 存储:常温干燥环境(温度≤30℃,湿度≤60%),防静电包装。

总结

BZT52B24是一款高性价比宽温稳压管,以「小尺寸适配高密度设计+低功耗+宽温可靠性」为核心优势,满足多数轻负载稳压与过压保护需求,是工业控制、汽车电子等领域的常用器件。

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