WMSIC Electronic Components

LGE DB3

ModelDB3
PackageDO-35
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LGE DB3
Type
LGE
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LGE
Electronic Component
DB3
Electronic Component
1
Package
DO-35
Electronic Component
Diode
Electronic Component
0.15g
Electronic Component
1
Electronic Component
BM0226478610
Current(Ir)
10uA
(tr)
2us
Output Voltage(Vo)
5V
Current(It)
2A
Current(Ibo)
50uA
Dynamic Voltage
5V
Electronic Component
40℃~+125℃

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

DB3 触发二极管(LGE,DO-35)产品概述

一、产品简介

DB3 系列为经典的触发二极管(Diac/触发二极管),用于交流触发电路中对三端双向可控硅(Triac)或其它开关元件提供可靠的触发脉冲。该产品由 LGE(鲁光)生产,采用玻璃封装 DO-35,结构紧凑,适合手工焊接或自动插装。典型应用包括灯光调光器、相位角调制、交流电机软启动、电源保护与脉冲发生器等。

二、主要电气参数(依据提供数据)

  • 工作结温范围:-40℃ ~ +125℃
  • 转折电压(VBO)范围:28V ~ 36V
  • 转折电压(典型值):32V
  • 转折电压对称性:±3V(即正负极触发电压差不大于 3V)
  • 转折电流(Ibo):50 μA(触发时的电流参考)
  • 通态电流(It):2 A(短时通态能力,用于评估触发脉冲幅值)
  • 漏电流(Ir):10 μA(静态泄漏电流)
  • 上升时间(tr):2 μs(触发脉冲上升特性)
  • 动态转折电压:5V(触发后电压降变化参考)
  • 输出电压(Vo):5V(触发输出参考值,视电路而定)

注:描述中还出现 100 μA 的数值,若遇到多份规格存在差异,建议以最终出厂数据表为准。

三、典型特性与应用要点

  1. 触发一致性好:VBO 范围 28–36V、典型 32V,并且正负端对称性约 3V,利于双向触发电路获得稳定一致的触发点,适用于交流两半周触发设计。
  2. 高通态能力:峰值通态电流达 2A,能够提供充足的触发冲击电流以可靠点燃后级 TRIAC,适合中小功率的调光与控制场合。
  3. 低泄漏电流:静态漏电小(10 μA 级),在未触发时对电路影响有限,尤其适用于高阻输入或对漏电敏感的场合。
  4. 快速响应:上升时间约 2 μs,可满足多数家用与工业触发电路对脉冲前沿的要求,减少触发延迟和抖动。

常见应用场景:

  • 家用及舞台灯光调光器(相控调光)
  • 小型电机软启动与速度控制
  • 交流开关保护、过压/欠压检测电路中的脉冲源
  • 简单的脉冲产生器与延时电路

四、封装与物理特性

  • 封装形式:DO-35(玻璃管轴向引线封装)
  • 优点:体积小、耐热性和机械强度良好、便于手工或自动化装配、散热和绝缘性能稳定。
  • 环境适应:工作结温范围宽(-40℃ ~ +125℃),适合工业级温度要求。

五、使用建议与注意事项

  • 匹配电路设计:选择合适的串联电阻或触发网路,确保在交流波形中能可靠达到 VBO 并提供足够的触发电流(It)。
  • 抗浪涌与保护:尽管通态电流达 2A,但避免长期承受超额脉冲或高能量冲击。必要时在前端加入浪涌抑制元件(如压敏电阻、串联电阻或限流电容)。
  • 温度与散热:在高温或高频触发场合,注意封装和周围器件的散热布置,避免长期处于极限温度。
  • 质量一致性:如对触发电压精度要求高,可在采购或设计时向供应商索要批次特性分布(VBO 分布、Ibo、Ir 等)以便配对与校准。
  • 规格确认:不同来源的数据表可能存在差异(如漏电流或其他典型值),设计时应以实际采购的器件数据手册为准。

六、采购与封装信息

  • 品牌:LGE(鲁光)
  • 描述(常见标注):触发二极管,2A,转折电压 28V~36V(典型 32V)
  • 封装:DO-35(轴向玻璃封装)
  • 备注:适合对成本和体积敏感的工业与民用触发电路应用。如需样片或批量采购,建议向供应商索取完整数据手册与可靠性测试报告。

如需我根据您的具体电路(工作电压、负载类型、触发方式)给出接线建议或典型参考电路参数设定,我可以进一步提供配置与计算示例。

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