WMSIC Electronic Components

LGE BZV55C5V1

ModelBZV55C5V1
PackageSOD-80
BrandLGE
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
LGE BZV55C5V1
Type
LGE
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LGE
Electronic Component
BZV55C5V1
Electronic Component
1
Package
SOD-80
Electronic Component
Zener Diode
Electronic Component
0.046g
Electronic Component
1
(Zzk)
550Ω
(Zzt)
35Ω
Electronic Component
BM0226469328
Diode
1
Current(Ir)
100nA@1V
Power Dissipation(Pd)
500mW
Electronic Component
4.8V~5.4V
Electronic Component
65℃~+200℃

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

BZV55C5V1 产品概述

一、产品简介

BZV55C5V1 是一款独立式稳压二极管(Zener diode),标称稳压值为 5.1V,实际稳压范围为 4.8V ~ 5.4V,常用于低功耗电压稳压、参考电压和浪涌/纹波限幅等场合。该型号由 LGE(鲁光)品牌提供,封装为 SOD-80,适合表面贴装应用。器件设计适配小体积电路板,并兼顾低反向泄漏和中等稳压功率能力的需求。

主要参数一览

  • 稳压值(标称):5.1V(范围 4.8V ~ 5.4V)
  • 反向电流 Ir:100 nA @ 1.0 V
  • 最大耗散功率 Pd:500 mW
  • 动态阻抗 Zzk:550 Ω(低电流区)
  • 动态阻抗 Zzt:35 Ω(测试或工作区)
  • 工作结温范围:-65 ℃ ~ +200 ℃
  • 封装:SOD-80
  • 品牌:LGE(鲁光)

二、关键电气特性及其工程意义

  1. 稳压精度与范围:标称 5.1V,实际工作中在不同偏置电流下会有偏移,规格表给出的 4.8V~5.4V 表示在规定条件下的允许偏差区间,选型时应依据电路允许的最大和最小电压来判断是否满足需求。
  2. 动态阻抗:Zzk(550 Ω)通常表示低电流区的阻抗,数值较大意味着在很小的偏置电流下稳压能力有限,输出电压对电流变化敏感;Zzt(35 Ω)为在工作电流附近的动态阻抗,反映稳压时的纹波抑制能力和负载调节能力。
  3. 反向泄漏:100 nA @ 1V 表示在较低反向电压下泄漏电流极小,适合对漏电要求严格的低功耗电路。
  4. 功率限值:500 mW 为最大耗散功率,从热平衡角度计算,在 5.1V 稳压点理论上的最大持续电流约为 98 mA(Imax ≈ Pd / Vz)。但实际应用中需考虑封装热阻与 PCB 散热能力,应进行功率热降额处理。

三、典型应用场景

  • 低功耗电源的基准电压或局部稳压(如传感器、模拟前端供电)
  • 电平钳位与浪涌保护(对短时过冲进行限幅)
  • 基准源或偏置网络(放大器偏置、比较器参考)
  • 电池供电设备的次级稳压和保护电路

四、使用建议与设计计算示例

  1. 串联限流电阻选择:常见的稳压电路为将 BZV55C5V1 接地,输入电源经限流电阻 R 到稳压管。选择公式:R = (Vin - Vz) / (Iz + Iload)。在计算时应保证 Iz 在器件工作区,并且稳压管功耗 Pd = Vz * Iz 不超过 500 mW(含安全裕度)。
  2. 示例(参考计算,不替代详细热设计):
    • 设 Vin = 12 V,Vz = 5.1 V,负载电流 Iload = 5 mA。若目标在稳压管上留 Iz = 5 mA,则 R = (12 - 5.1) / (5mA + 5mA) = 690 Ω,稳压管耗散 Pd = 5.1V * 5mA = 25.5 mW,远低于最大值,但需检查最坏情况(无负载时 Iz 增大)是否超功耗。
  3. 热管理:SOD-80 为小封装,热阻相对较高。实际布局时应扩大靠近稳压二极管的铜箔面积,必要时并联散热铜层或使用过孔散热,避免长期接近或超过 Pd。

五、可靠性与装配注意事项

  • 封装与焊接:SOD-80 适合回流焊,但需按厂家推荐的回流曲线进行,以避免超过结温或引脚应力。
  • ESD 与浪涌:稳压二极管对反向浪涌有一定吸收能力,但仍建议在有较大瞬态电压的场合配合其它吸收元件(如TVS、限流电阻)使用。
  • 储存与焊接温度:器件额定的工作结温范围很宽,但在实际焊接与回流过程中应按照封装的最大允许温度和时间来控制,避免长时间高温导致可靠性下降。

六、选型与替代建议

在选型时,关注稳压电压在实际偏置电流下的偏差、动态阻抗对纹波抑制的影响、以及封装的热散能力。对于需要更高稳压精度或更大功率的应用,可考虑更低动态阻抗或更大耗散功率的其它封装型号;若工作在极低电流下,应优先选择低 Zzk 的型号以获得更稳定的输出电压。

总结:BZV55C5V1 以其 5.1V 的标称稳压、低反向泄漏和小尺寸 SOD-80 封装,适合中低功耗、空间受限的稳压和参考电路。设计时应重视限流设计与热降额,以及布板散热处理,以保证长期可靠工作。

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