WMSIC Electronic Components

ZMM7V5

ModelZMM7V5
PackageLL-34
BrandYONGYUTAI
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
YONGYUTAI ZMM7V5
Type
YONGYUTAI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YONGYUTAI
Electronic Component
ZMM7V5
Electronic Component
1
Package
LL-34
Electronic Component
Zener Diode
Electronic Component
0.041g
Electronic Component
1
(Zzk)
50Ω
(Zzt)
7Ω
Electronic Component
BM0264770639
Diode
1
Current(Ir)
100nA@5V
Power Dissipation(Pd)
500mW
Electronic Component
7V~7.9V
Electronic Component
Electronic Component

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

ZMM7V5稳压二极管产品概述

ZMM7V5是永裕泰(YONGYUTAI)推出的一款独立式硅基稳压二极管,核心定位为低功耗场景下的电压基准、稳压及过压保护元件。其以7.5V标称稳压值为核心,结合小型LL-34封装与严格控制的电气参数,适配便携式电子、小型电源模块等多类应用,是低成本稳压方案中的实用选择。

一、核心应用场景

ZMM7V5的参数特性决定了其更适合低功耗、小电流的电子电路场景,典型应用包括:

  1. 便携式设备辅助稳压:如智能手环、蓝牙耳机的辅助供电电路,需稳定7.5V基准电压,低反向漏电流可减少待机功耗;
  2. 单片机AD采样基准:工业控制或消费电子中的单片机AD模块,对基准电压精度要求适中,ZMM7V5的7Ω动态阻抗可满足基本精度需求;
  3. 小型电源模块稳压:5V/12V转7.5V的辅助稳压电路,配合限流电阻即可实现简单稳压;
  4. 过压保护元件:USB接口、传感器前端电路的过压保护,当电压超过稳压范围时,管子击穿导通,分流过压电流保护后续电路。

二、关键电气参数解析

ZMM7V5的参数设计围绕“低功耗、稳定稳压”展开,核心参数的实际意义如下:

1. 稳压值特性

  • 标称稳压值7.5V:电路设计中可作为基准电压的核心参考,适配多数需要7.5V基准的场景;
  • 稳压范围7V~7.9V:为生产公差范围,实际应用中需根据电路精度要求预留裕量(如AD基准需考虑公差对精度的影响,建议设计时增加±0.5V的裕量)。

2. 反向漏电流(Ir)

  • 参数:100nA(反向电压5V时);
  • 意义:反向漏电流极低,意味着在电池供电设备的待机状态下,管子几乎不消耗额外电流,可延长电池续航(例如,若设备待机电流为1μA,ZMM7V5的漏电流仅占10%,影响可忽略)。

3. 最大耗散功率(Pd)

  • 参数:500mW(0.5W);
  • 注意:实际使用时需计算串联限流电阻,避免功耗超过额定值。例如,若稳压管工作电流为100mA,则串联电阻需满足:( R = \frac{V_{in} - V_z}{I} \leq \frac{V_{in} - 7.5}{0.1} ),且管子功耗( P = I \times (V_{in} - 7.5) \leq 0.5W )。

4. 动态阻抗(Zzt/Zzk)

  • Zzt=7Ω(测试电流下的动态阻抗):表示在额定工作电流下,稳压值随电流变化的幅度小(例如,电流变化10mA时,稳压值变化仅70mV),稳压精度较高;
  • Zzk=50Ω(低电流下的动态阻抗):适合小电流场景(如AD基准的微安级电流),仍能保持相对稳定的稳压效果(电流变化1mA时,稳压值变化50mV)。

三、封装与物理特性

ZMM7V5采用LL-34轴向引线封装,属于小型通孔封装,具备以下特点:

  1. 尺寸小巧:封装尺寸约为φ1.5mm×3.0mm(典型值),可节省PCB空间,适配高密度布局(如智能手表内部的小型电源板);
  2. 独立式封装:每个管子单独封装,性能一致性好,批量应用时无需担心串扰问题;
  3. 耐温性:采用玻璃钝化硅片工艺,可承受-55℃~+150℃(典型工业级温度范围)的工作环境,适配常规电子设备的温度需求(如车载电子的低温场景)。

四、品牌与可靠性保障

永裕泰(YONGYUTAI)作为国内电子元器件供应商,ZMM7V5的参数标注符合通用稳压管的行业标准:

  • 反向漏电流控制严格(100nA@5V),避免低功耗场景下的额外损耗;
  • 稳压值公差范围明确(7V~7.9V),方便电路设计时的裕量计算;
  • 批量产品的一致性较好(同一批次稳压值偏差≤0.2V),适合量产中的替换与维护。

五、使用注意事项

  1. 限流电阻计算:必须串联合适的限流电阻,避免稳压管因过流损坏(例如,若输入电压为12V,工作电流为50mA,则限流电阻需选90Ω左右);
  2. 温度影响:硅基稳压管的稳压值会随温度略有变化(约+2mV/℃),高温场景下(如+100℃)需考虑温度补偿(可串联热敏电阻调整);
  3. 焊接温度:LL-34封装的焊接温度不宜超过260℃(持续时间≤10s),避免损坏封装与内部硅片。

总结

ZMM7V5以其稳定的7.5V稳压值、低漏电流、小型封装等特点,成为低功耗电子设备中稳压、基准、保护的高性价比选择。其参数适配便携式设备、小型电源、单片机电路等常见场景,且安装维护方便,适合对成本敏感的量产应用。

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