WMSIC Electronic Components

Jingdao Microelectronics MM3Z3V3W

ModelMM3Z3V3W
PackageSOD-323W
BrandElectronic
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
Electronic MM3Z3V3W
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
MM3Z3V3W
Electronic Component
1
Package
SOD-323W
Electronic Component
Zener Diode
Electronic Component
0.027g
Electronic Component
50
(Zzt)
130Ω
Electronic Component
BM0257204640
Diode
1
Current(Ir)
20uA
Power Dissipation(Pd)
300mW
Electronic Component
3.1V~3.5V
Electronic Component
55℃~+150℃
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.

MM3Z3V3W 产品概述

MM3Z3V3W 是晶导微电子推出的一款独立式稳压二极管(齿形稳压管 / Zener),标称稳压值 3.3V,适用于小功率电源稳压、基准电压、浪涌钳位等场合。器件采用 SOD-323W 细小表贴封装,适合空间受限的移动、通信与消费电子产品。

一、主要特性与关键参数

  • 稳压值(标称):3.3V
  • 稳压值范围:3.1V ~ 3.5V(制造公差与测量条件下的典型区间)
  • 反向电流 Ir:20 μA @ 1V(低电压下的反向泄漏)
  • 动态阻抗 Zzt:130 Ω(在规定测试电流下的交流阻抗,表明负载敏感性)
  • 最大耗散功率 Pd:300 mW(封装限制的功率耗散)
  • 工作结温范围:-55 ℃ ~ +150 ℃
  • 封装:SOD-323W(小型表贴)
  • 品牌:晶导微电子

二、电气特性解析与设计要点

  • 动态阻抗较高(Zzt = 130 Ω),意味着在工作电流变化时,稳压点会有明显偏移。本器件更适合低功耗、小电流环境下作简单基准或钳位,而非高精度参考。
  • 反向泄漏(20 μA @ 1V)表示在低反向电压时流过的微小电流,可作为待机/断电路径的参考,但在高灵敏度测量电路中需注意其对偏置的影响。
  • 最大允许耗散功率 300 mW 可用来估算理论最大稳流:Iz_max ≈ Pd / Vz = 0.3 W / 3.3 V ≈ 90.9 mA(理论值)。实际应用应远低于此极限以保证可靠性,建议连续工作电流控制在 1 mA ~ 20 mA 范围内为宜(视散热与环境温度而定)。

三、典型应用与电路设计示例

  • 作为低功耗稳压/基准:在输入电压 Vin 与地之间并联 MM3Z3V3W,通过串联限流电阻 R 实现简易稳压。R = (Vin - Vz) / Iz。
    示例:若 Vin = 5V,目标 Iz = 5 mA,则 R = (5 − 3.3) / 5 mA ≈ 340 Ω;二极管功耗 Pd = Vz × Iz ≈ 16.5 mW,远低于最大额定值。
  • 过压/浪涌钳位:用于保护敏感芯片输入,当电压上升到接近 3.3V 时导通,限制电压峰值。由于动态阻抗较高,针对较大浪涌时需谨慎选型或并联能量吸收元件。
  • 基准源 / 比较器参考:在不要求高精度的场合可直接使用,若需更精确的参考,建议使用低阻抗专用基准芯片。

四、封装与可靠性注意事项

  • SOD-323W 为小型表面贴装封装,适合高密度 PCB。焊接时注意热循环限制与良好PCB热导设计,以保证稳定的热耗散。
  • 器件工作结温范围宽(-55 ℃ ~ +150 ℃),然而在高环境温度或受限散热条件下,允许的持续电流应降低以避免结温超限。设计时应考虑 PCB 铜箔面积、通孔散热与周围元件热源。
  • 对于需要脉冲大电流或短时高功耗的场景,应参考供应商进一步的脉冲特性与最大允许值。

五、选型建议与常见注意事项

  • 若电路要求高精度稳压或低输出阻抗,建议选用专用低漂移参考源而非此类高阻抗稳压二极管。
  • 在作为稳压器使用时,优先按最大耗散、结温与实际环境温度反算允许电流,保证长期可靠性。
  • 当需要更低泄漏或更窄稳压公差时,咨询晶导微电子规格书或选择公差更严格的型号。
  • 订购信息:型号 MM3Z3V3W,封装 SOD-323W,品牌:晶导微电子。

如需基于您的工作电压、负载电流和环境温度给出更精确的限流电阻选型、热设计建议或替代型号推荐,请提供具体应用参数,我可以帮您做进一步的计算与匹配。

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