WMSIC Electronic Components

TWGMC BZT52C4V3S Zener Diode BZT52C4V3S

ModelBZT52C4V3S
PackageSOD-323
BrandTWGMC
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

19 specifications

Core information

Product name
TWGMC BZT52C4V3S
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
BZT52C4V3S
Electronic Component
1
Package
SOD-323
Electronic Component
Zener Diode
Electronic Component
0.035g
Electronic Component
1
(Zzk)
600Ω
(Zzt)
90Ω
Electronic Component
BM0257505416
Diode
1
Current(Ir)
3uA
Power Dissipation(Pd)
200mW
Electronic Component
4V~4.6V
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.

BZT52C4V3S稳压二极管产品概述

一、产品基本定位与核心身份

BZT52C4V3S是台湾迪嘉半导体(TWGMC)推出的一款低压独立式稳压二极管,属于其SOD-323封装系列的常规稳压管产品。该器件针对小型化、低功耗电子设计需求开发,标称稳压值为4.3V,覆盖4V~4.6V的实用稳压范围,适配多种低压电路的稳压、参考电压或偏置需求,是便携式设备、工业控制等场景的高性价比选择。

二、核心电参数详解(关键性能指标)

作为稳压二极管,其核心性能集中在稳压精度、功耗、阻抗及温度适应性上,具体参数及意义如下:

1. 稳压值特性

标称稳压值为4.3V,实际工作范围覆盖4V4.6V——这一范围既满足了不同批次器件的一致性,也适配了电路中轻微电压波动的稳压需求。不同于高压稳压管,低压稳压管的稳压值波动对电路影响更直接,4V4.6V的区间在同类产品中属于较窄范围,能有效保证稳压精度。

2. 反向漏电流(Ir)

反向电压1V时,漏电流仅为3μA——这是该器件的一大优势:在电路未达到稳压状态(反向电压低于击穿电压)时,几乎不消耗额外功率,尤其适合电池供电的便携式设备(如智能手环、蓝牙耳机),能显著延长待机时间。

3. 耗散功率(Pd)与工作电流

最大耗散功率为200mW,结合标称稳压值计算,最大允许工作电流约为46.5mA(Pd/Vz≈200mW/4.3V)。这一电流范围足够支撑多数小功率稳压场景(如MCU参考电压、信号偏置),无需额外散热设计。

4. 动态阻抗与零电流阻抗

  • 动态阻抗(Zzt=90Ω):反映稳压管在工作电流下的稳压稳定性——阻抗越低,稳压精度越高。90Ω的Zzt在同类低压稳压管中表现中等偏上,能有效抑制负载波动对输出电压的影响;
  • 零电流阻抗(Zzk=600Ω):反映稳压管在零工作电流下的初始阻抗,对需要快速建立稳压状态的电路(如电源启动阶段)至关重要。

5. 宽温工作范围

工作结温覆盖-55℃~+150℃,符合工业级器件的温度要求,可在极端环境(如户外设备、汽车电子)中稳定工作,无需额外温度补偿电路。

三、封装与可靠性设计

BZT52C4V3S采用SOD-323封装,这是一种超小型表面贴装封装(尺寸约1.6mm×0.8mm×0.6mm),具有以下核心优势:

  • 高密度布局:适合智能手机、智能穿戴、小型工业模块等对电路板空间要求苛刻的场景;
  • 焊接可靠性:贴片封装焊接工艺成熟,抗振动、抗冲击能力强,适合移动设备或工业现场;
  • 散热适配:虽然封装小,但200mW的耗散功率无需额外散热片,通过电路板铜箔即可有效散热。

此外,TWGMC的制造工艺保证了器件一致性:同批次产品的稳压值、漏电流等参数波动极小,无需在电路中额外设计微调环节。

四、典型应用场景

结合参数特性,BZT52C4V3S主要适用于以下场景:

  1. 便携式电子设备稳压:如蓝牙耳机、智能手环、智能手表的电源稳压或电池充电电路的参考电压;
  2. MCU与数字电路参考:为微控制器(如STM32、51单片机)提供稳定的4.3V参考电压,保证AD转换精度;
  3. 工业控制电路偏置:在PLC、传感器模块中作为信号偏置电压,适配宽温环境;
  4. 通信设备信号稳压:如蓝牙模块、WiFi模块的射频信号偏置,减少电压波动带来的信号噪声;
  5. 小型电源模块输出:作为线性稳压器的辅助稳压元件,提升输出电压精度。

五、使用注意事项

为保证器件稳定工作,需注意以下几点:

  1. 工作电流限制:实际工作电流需控制在1mA~45mA之间(避免超过最大耗散功率),若负载电流较大,需搭配限流电阻;
  2. 焊接工艺:SOD-323封装小,焊接温度需控制在260℃以内,回流焊时间不超过10秒,避免热损伤;
  3. 反向过压防护:虽然稳压管能承受反向击穿电压,但长期过压会加速器件老化,建议在电路中增加TVS管或保险丝;
  4. 散热布局:避免将器件靠近发热元件(如功率电感、MOS管),可在焊盘下增加铜箔面积辅助散热。

总结:BZT52C4V3S是一款性价比高、性能均衡的低压稳压二极管,适合对尺寸、功耗和宽温有要求的电子设计,尤其在便携式设备和工业控制领域具有广泛应用前景。

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