WMSIC Electronic Components

MCC MMSZ5237B-TP MMSZ5237B

ModelMMSZ5237B-TP
PackageSOD-123
BrandMCC
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

20 specifications

Core information

Product name
MCC MMSZ5237B-TP
Type
MCC
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
MCC
Electronic Component
MMSZ5237B-TP
Electronic Component
1
Package
SOD-123
Electronic Component
Zener Diode
Electronic Component
0.033g
Electronic Component
1
(Zzk)
500Ω
(Zzt)
8Ω
Electronic Component
BM0264209510
Diode
1
Current(Ir)
3uA
Power Dissipation(Pd)
500mW
Electronic Component
65℃~+150℃

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

MMSZ5237B-TP稳压二极管产品概述

MMSZ5237B-TP是美微科(MCC)推出的一款表面贴装小功率稳压二极管,属于MMSZ52系列稳压管的核心型号之一,针对高密度PCB设计优化,具备低漏电流、宽温适应性和稳定稳压性能,广泛应用于消费电子、工业控制及便携式设备等领域。

一、产品基本定位与型号说明

该型号为表面贴装稳压二极管,型号命名中:

  • "MMSZ"代表MCC小功率表面贴装稳压管系列;
  • "5237B"对应标称稳压值8.2V(系列内编号与稳压值关联);
  • "TP"为封装与编带标识(通常表示SOD-123封装+卷带编带,适合自动贴装)。

产品采用无铅环保工艺制造,符合RoHS指令要求,可直接用于绿色电子产品设计。

二、核心电性能参数详解

MMSZ5237B-TP的电性能参数针对稳压精度、功耗及动态特性优化,关键参数如下:

1. 稳压值与漏电流

  • 标称稳压值(Vz):8.2V(测试条件:典型工作电流Izt下的稳定电压值,确保电路中提供精准基准);
  • 反向漏电流(Ir):3μA(测试条件:反向电压6.5V,低于标称稳压值时的漏电流)。低漏电流特性可显著降低待机功耗,适合低功耗设备设计。

2. 功率与电流能力

  • 最大耗散功率(Pd):500mW(额定功率,正常工作下需结合环境温度降额使用,例如25℃时可满额工作,150℃时需降至约100mW);
  • 最大工作电流(Izmax):约61mA(由Pd/Vz计算得出,实际需根据降额曲线调整)。

3. 动态阻抗特性

  • 测试电流下阻抗(Zzt):8Ω(典型测试电流Izt下的动态阻抗,低阻抗确保稳压精度随电流变化小);
  • 最大电流下阻抗(Zzk):500Ω(最大工作电流下的阻抗,保证宽电流范围下的稳压稳定性)。

4. 温度特性

  • 工作结温范围:-65℃~+150℃(覆盖工业级宽温环境,适合极端温度场景应用);
  • 典型温度系数:约+0.08%/℃(稳压值随温度变化小,宽温下仍保持精度)。

三、封装与物理特性

产品采用SOD-123封装,是一款小型表面贴装封装,具备以下特点:

  • 尺寸小巧:典型尺寸为2.0mm(长)×1.2mm(宽)×1.0mm(高),引脚间距0.5mm,适合高密度PCB布局;
  • 贴装兼容性:支持标准SMT贴装工艺,可通过回流焊、波峰焊实现批量生产;
  • 机械可靠性:封装强度高,抗振动、抗冲击能力符合行业标准,适合便携式设备的移动场景。

四、典型应用场景

MMSZ5237B-TP凭借稳定的电性能和小型封装,适用于以下场景:

1. 电压基准源

为运算放大器(运放)、模数转换器(ADC)、数字电位器等电路提供8.2V稳定基准电压,低动态阻抗确保基准精度不受负载电流波动影响。

2. 过压保护元件

配合限流电阻使用,当电路出现过压脉冲时,稳压管反向击穿导通,将电压钳位在8.2V左右,保护后级敏感器件(如MCU、传感器等)免受损坏。

3. 小功率稳压电路

在电池供电的便携式设备(如蓝牙耳机、智能手环)中,作为线性稳压的辅助元件,或直接用于小电流稳压(如为LED指示灯提供稳定电压)。

4. 信号钳位

在模拟信号链路(如音频、传感器信号)中,钳位信号峰值电压,防止信号过冲导致的器件损坏或失真。

五、可靠性与应用注意事项

  1. 降额使用:需根据环境温度调整工作功率,避免超过额定耗散功率导致结温过高;
  2. 散热设计:SOD-123封装散热面积小,高功率工作时需在PCB上增加散热铜箔;
  3. 极性识别:封装上通常有色环标识负极,贴装时需注意极性,避免反向安装导致失效。

总结

MMSZ5237B-TP作为MCC小功率稳压管的经典型号,以低漏电流、宽温范围、小型封装为核心优势,满足多种电子设备的稳压、基准及保护需求,是高密度设计中可靠的稳压元件选择。

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