WMSIC Electronic Components

JUXING DB3

ModelDB3
PackageDO-35
BrandJUXING
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
JUXING DB3
Type
JUXING
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JUXING
Electronic Component
DB3
Electronic Component
1
Package
DO-35
Electronic Component
Diode
Electronic Component
0.132g
Electronic Component
1
Electronic Component
BM0265601793
Current(Ir)
10uA
(tr)
1.5us
Output Voltage(Vo)
5V
Current(It)
2A
Current(Ibo)
100uA
Dynamic Voltage
5V
Electronic Component
40℃~+125℃@(Tj)

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

钜兴JUXING DB3双向触发二极管产品概述

一、产品定位与核心应用方向

DB3是一款小功率双向触发二极管,核心作用是为双向晶闸管(TRIAC)、双向可控硅等器件提供可靠的触发信号,也可用于简单过压保护、脉冲整形等电路。其特点是双向对称触发、响应速度快、工作温度范围宽,适配大部分家电、工业控制等场景的小电流触发需求,是低成本触发方案的经典选择。

二、关键参数深度解析

结合产品参数,从触发特性、通态/反向特性、动态/环境特性三方面解析核心性能:

1. 触发特性参数

  • 转折电压:典型值32V,范围28V~32V
    器件从截止态切换到导通态的临界电压,范围明确确保批量一致性,避免不同批次触发差异;
  • 转折电流(Ibo):100uA
    触发导通所需的最小电流,低功耗设计,无需大电流驱动即可触发后级晶闸管;
  • 转折电压对称性:3V
    正向与反向触发电压的最大差值,保证双向触发的一致性,避免正反向调压/控制的偏差;
  • 动态转折电压:5V
    高频工作时的实际转折电压(比静态值低),适配高频脉冲触发场景(如快速开关控制)。

2. 通态与反向特性

  • 通态电流(It):2A
    导通状态下允许的最大连续电流,满足大部分小功率晶闸管(如1A~2A级TRIAC)的触发需求;
  • 漏电流(Ir):10uA
    反向截止时的最大漏电流,反向特性优异,减少待机功耗,适合低功耗电路;
  • 输出电压(Vo):5V
    导通后的典型压降,触发时功耗低,避免器件过热。

3. 动态与环境参数

  • 上升时间(tr):1.5us
    电压从10%上升到90%的响应时间,快速响应满足高频控制(如调光台灯的快速调压);
  • 工作结温范围:-40℃+125℃
    宽温度范围,适配工业级(-4085℃)、家电(0~70℃)等场景,极端环境下仍稳定工作。

三、封装与可靠性设计

采用DO-35轴向引线封装,具有以下优势:

  • 体积小巧:直径约2.2mm,长度约4.3mm,适合紧凑电路布局(如家电控制板);
  • 安装便捷:轴向引线适配插件式PCB设计,无需特殊焊接工艺;
  • 可靠性高:封装材料耐温、抗腐蚀,配合宽结温范围,确保长期工作无失效;
  • 一致性好:漏电流低、转折电压范围窄,批量应用无需额外筛选,降低生产复杂度。

四、典型应用场景

  1. 家电控制:调光台灯、风扇调速、电暖器温度控制——通过触发TRIAC实现连续调压,双向对称性确保正反向亮度/转速一致;
  2. 工业小功率控制:小型电机调速、继电器触发——宽温范围适配车间环境,快速响应满足高频控制需求;
  3. 过压保护辅助:配合压敏电阻,当电压超过转折电压时导通,泄放过压保护后级电路;
  4. 脉冲整形:利用转折特性将不规则脉冲整形为标准方波,用于信号处理电路。

五、选型与使用注意事项

  1. 匹配性确认:需确认后级晶闸管的触发电流≥DB3的转折电流(100uA),避免触发不足;
  2. 电流限制:导通后电流不得超过2A(连续),需串联限流电阻(如100Ω~1kΩ),防止过热损坏;
  3. 温度适配:应用环境温度需在-40℃~+125℃范围内,避免超温工作;
  4. 安装注意:DO-35引线间距需符合PCB设计(典型间距2.54mm),避免机械应力导致引线断裂;
  5. 反向耐压:DB3典型反向耐压约30V~40V,需注意反向电压不超过此范围,防止反向击穿。

综上,钜兴JUXING DB3双向触发二极管凭借稳定的触发特性、宽温范围与低成本优势,是家电、工业控制等领域小功率触发方案的可靠选择。

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