WMSIC Electronic Components

LRC LUDZS27BT1G

ModelLUDZS27BT1G
PackageSOD-323
BrandLRC
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

18 specifications

Core information

Product name
LRC LUDZS27BT1G
Type
LRC
Minimum package
3000

Technical parameters

Electronic Component
LRC
Electronic Component
LUDZS27BT1G
Electronic Component
1
Package
SOD-323
Electronic Component
Zener Diode
Electronic Component
0.029g
Electronic Component
1
(Zzt)
150Ω
Electronic Component
BM0265132252
Diode
1
Current(Ir)
100nA
Power Dissipation(Pd)
200mW
Electronic Component
26.19V~27.53V
Electronic Component
3000
Electronic Component
27V

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

LUDZS27BT1G稳压二极管产品概述

LUDZS27BT1G是乐山无线电(LRC)推出的独立式小功率稳压二极管,采用SOD-323表面贴装封装,核心围绕27V稳压值设计,兼顾低功耗、小体积与可靠性,适配便携电子、传感器模块等对空间和功耗敏感的场景。

一、产品核心定位

该器件属于低功耗稳压二极管,区别于功率型稳压管,设计重点在于:

  • 体积紧凑:适配小型化PCB布局;
  • 漏电流极低:满足电池供电设备的低功耗需求;
  • 中等精度稳压:覆盖多数普通稳压场景(如辅助电源、简单基准)。

独立式封装结构让散热路径集中,配合200mW耗散功率,可稳定支撑小电流稳压应用。

二、关键电气参数解析

参数是稳压管性能的核心体现,LUDZS27BT1G的关键参数及实际意义如下:

  1. 稳压值(标称/范围):标称27V,实际工作范围26.19V~27.53V(约±3%精度)。此范围覆盖了温度、电流变化带来的波动,能满足多数中等精度需求(如传感器参考电压、辅助电源稳压)。
  2. 反向漏电流(Ir):仅100nA(10⁻⁸A级别)。反向截止时几乎不消耗功率,避免漏电流导致电池供电设备续航下降,适合低功耗电路。
  3. 耗散功率(Pd):最大200mW。结合稳压值计算,最大工作电流约7.4mA(实际需留安全余量,建议控制在5mA以内),避免器件过热损坏。
  4. 动态阻抗(Zzt):150Ω。反映稳压稳定性——阻抗越低,负载电流变化时稳压值波动越小。150Ω的阻抗能满足普通稳压需求,若需高精度(如0.1%级),可搭配补偿电路。

三、封装与物理特性

LUDZS27BT1G采用SOD-323封装(俗称“0805二极管封装”),尺寸约1.6mm×0.8mm×0.6mm,是表面贴装最小封装之一,优势显著:

  • 高密度集成:适合智能穿戴(手环、TWS耳机)、小型传感器模块等紧凑设计,大幅节省PCB空间;
  • 贴装兼容:符合标准SMT工艺,可通过回流焊、波峰焊批量生产,无需特殊工艺;
  • 散热适配:200mW耗散功率无需额外散热片,仅需PCB铜箔即可满足散热需求。

四、典型应用场景

结合参数特性,该器件的常见应用场景包括:

  1. 便携设备辅助稳压:如智能手环充电电路、TWS耳机信号模块的稳压端,解决电池电压波动问题,漏电流小不影响续航;
  2. 低功耗模块基准电压:温湿度、压力传感器的参考电压源,为ADC提供稳定输入,避免漏电流干扰模块功耗;
  3. 简单过压保护:配合电阻、电容组成过压钳位电路,当电路电压超27V时,稳压管反向击穿,将电压钳位在27V左右,保护MCU、传感器等敏感元件;
  4. 小型电源稳压环节:如5V转27V升压电路的稳压端(搭配升压芯片),或小电流27V输出电源的稳压部分。

五、产品优势与适用限制

优势

  • 小体积高集成:SOD-323封装是同类产品中体积最小的选项之一,适配极限小型化设计;
  • 低功耗漏电流:100nA漏电流在同类产品中表现优异,适合电池供电设备;
  • 可靠品牌保障:LRC作为国内老牌半导体厂商,产品一致性好,批量供货稳定;
  • 宽温度适应性:常规工作温度(-55℃~125℃)覆盖工业、消费电子多数场景。

限制

  • 功率有限:200mW耗散功率仅适合小电流稳压(负载电流≤5mA),无法替代1W以上功率型稳压管;
  • 精度一般:±3%稳压范围仅适合中等精度需求,若需高精度(如0.5%以内),需选用高端基准稳压管;
  • 封装散热局限:高负载电流下易过热,需避免长时间满功率工作。

六、使用注意事项

  1. 极性正确:稳压管需反向接入电路(阴极接电源正极,阳极接负极),正向接入会导致大电流击穿;
  2. 电流限制:通过串联限流电阻控制工作电流(R=(Vin-Vz)/I,建议I≤5mA);
  3. 焊接规范:回流焊峰值温度≤260℃(时间≤10s),波峰焊温度≤245℃(时间≤5s),避免热应力损坏;
  4. 环境适配:避免潮湿、高温(超125℃)环境长期工作,以免参数漂移。

综上,LUDZS27BT1G是一款专为小功率、小型化场景设计的高性价比稳压二极管,凭借低漏电流、小封装、稳定稳压性能,成为便携电子、传感器模块等领域的优选器件。

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