WMSIC Electronic Components

LRC LUDZS8.2BT1G

ModelLUDZS8.2BT1G
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LRC LUDZS8.2BT1G
Type
LRC
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
LUDZS8.2BT1G
Electronic Component
1
Package
SOD-323
Electronic Component
Zener Diode
Electronic Component
0.025g
Electronic Component
1
(Zzk)
60Ω
(Zzt)
30Ω
Electronic Component
BM0258717094
Diode
1
Current(Ir)
500nA
Power Dissipation(Pd)
200mW
Electronic Component
8.02V~8.36V
Electronic Component
55℃~+150℃

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

LUDZS8.2BT1G — 8.2V 微功率稳压二极管产品概述

一、产品简介

LUDZS8.2BT1G 是 LRC(乐山无线电)生产的一款小型表面贴装稳压二极管(Zener),封装为 SOD-323。其稳压值在 8.02V 至 8.36V 范围内,适用于对电压参考或小电流稳压有要求的便携和板上电源电路。器件额定耗散功率为 200mW,反向电流(Ir)典型 500nA,工作结温范围宽(-55℃ 至 +150℃),适合在相对恶劣的环境温度下长期工作。

二、主要电气参数与物理特性

  • 稳压值:8.02V ~ 8.36V(器件在额定测试条件下的稳压范围)
  • 反向电流 Ir:500 nA(典型/参考值,具体测试条件见厂方完整数据表)
  • 最大耗散功率 Pd:200 mW(在规定环境温度和散热条件下)
  • 动态阻抗 Zzt:30 Ω(在标准测试电流下表现出的交流动态阻抗)
  • 动态阻抗 Zzk:60 Ω(在另一测试点下的动态阻抗值)
  • 工作结温范围:-55 ℃ ~ +150 ℃
  • 封装:SOD-323(小型表面贴装,便于高密度 PCB 布局)

这些参数表明该型号在小电流、低功耗应用中可提供较稳定的电压参考,同时具有较低的静态泄漏电流与一定的温度适应能力。

三、典型应用场景

  • 小功率参考源:为低功耗传感器、ADC 参考电压或微控制器的辅助电压提供稳定参考。
  • 板上电源钳位/过压保护:在输入电压突升时作为钳位元件保护下游电路(注意其能量吸收有限,适合轻微过压或配合限流电阻使用)。
  • 电池供电设备中的局部稳压:为外围模拟电路或测量前端提供稳定偏置电压。
  • 小电流 电压检测和比较电路:用于构建简单的阈值检测电路。

四、使用与电路设计建议

  1. 工作电流与功耗:器件最大耗散功率为 200 mW,因此在稳压电压约 8.2V 时的最大允许电流约为 Pd/Vz ≈ 200 mW / 8.2 V ≈ 24.4 mA。为了保证长期可靠性,实际设计中应留有余量,建议工作电流远低于该极限——典型应用中常用电流为几百微安至几毫安量级。
  2. 串联限流电阻:作为并联稳压器使用时需加串联电阻 R。举例:若输入 Vin=12V,期望负载电流 IL=5 mA,选择参考电流 Iz≈5 mA,则总电流 Itot=10 mA,R=(Vin−Vz)/Itot=(12−8.2)/0.01=380 Ω。二极管耗散功率 Pd=Vz×Iz≈8.2V×5 mA≈41 mW,远低于最大 Pd。
  3. 动态阻抗影响:本器件 Zzt=30 Ω,Zzk=60 Ω,动态阻抗对负载变化和测试电流变化下的稳压精度有显著影响。若系统对稳压精度有较高要求,应提高稳压工作电流以降低等效动态阻抗,或选用更高功率/更低阻抗的型号。
  4. 温度效应:稳压二极管的稳压值随结温有温度系数,长时间高功耗会导致结温升高,从而引起稳压漂移。在设计时需考虑结温上升,必要时在 PCB 上扩大铜箔面积以利散热。

五、封装与焊接注意事项

  • SOD-323 为微小 SMD 封装,适合自动贴装与回流焊工艺。
  • 焊接时应遵循厂方推荐的回流温度曲线,避免长时间高温暴露以保证封装和内焊点可靠性。
  • 封装小、功耗限制显著:若器件在电路中需承受较高平均功率或脉冲能量,应采用更大功耗等级或增加散热措施(如铜箔散热、热 vias)。

六、选型与可靠性建议

  • 若稳压精度与输出阻抗要求高:考虑使用额定功率更高、动态阻抗更低的稳压管或专用低压差稳压芯片。
  • 对环境温度和老化有更高要求时,请参考完整数据手册中的温度系数与长期稳定性测试数据。
  • 在抗浪涌与瞬态保护场合,本型号可配合限流电阻或瞬态抑制器件使用,但不宜单独作为高能量浪涌吸收器。

总结:LUDZS8.2BT1G 是一款适合小电流、低功耗场合的 8.2V 稳压二极管,封装小巧、工艺适配性好。在设计中需重视功耗限值、动态阻抗与热管理,合理选择工作电流与限流元件即可在多种便携与板载电源应用中提供稳定的电压参考和过压钳位功能。若需更详细的测试条件、典型曲线与焊接参数,请参照 LRC 官方完整数据手册。

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