WMSIC Electronic Components

ON 1N4454TR

Model1N4454TR
PackageDO-35
BrandON
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ON 1N4454TR
Type
ON
Minimum package
10000

Technical parameters

Electronic Component
ON
Electronic Component
1N4454TR
Electronic Component
1
Package
DO-35
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.17g
Electronic Component
1
Electronic Component
BM0230803040
Current
400mA
Current(Ir)
100nA@50V
(Vf)
710mV@10mA
Power Dissipation(Pd)
500mW
Electronic Component
10000
Voltage Rating(Vr)
50V
(Trr)
4ns
Surge Current (Ifsm)
4A

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

1N4454TR快恢复高效率二极管产品概述

一、产品核心身份与定位

1N4454TR是安森美(ON Semiconductor) 推出的标准化快恢复高效率二极管,属于1N4454系列的商用级产品,采用经典DO-35轴向封装。该器件针对中小功率高频电路优化,平衡了低功耗、快恢复特性与可靠性,是开关电源、续流电路、低功耗整流等场景的高性价比选择。

二、关键电气参数详解

1N4454TR的参数设计精准匹配低压高频应用需求,核心参数及实际意义如下:

1. 正向导通特性

  • 正向压降(Vf):710mV@10mA
    比普通硅二极管(约0.7V)略低,导通损耗小,可降低连续工作时的发热;
  • 直流整流电流(If):400mA
    满足10W以内中小功率电路的持续整流需求;
  • 非重复峰值浪涌电流(Ifsm):4A
    能承受瞬间过流冲击(如电源启动瞬间、负载突变),提升电路抗干扰能力。

2. 反向阻断特性

  • 直流反向耐压(Vr):50V
    覆盖常见低压电路(如5V/12V系统)的反向电压需求,避免反向击穿;
  • 反向漏电流(Ir):100nA@50V
    低漏电流设计可减少待机功耗,适合电池供电设备(如智能传感器、便携充电器);
  • 反向恢复时间(Trr):4ns
    快恢复特性是核心优势——高频电路中,二极管反向恢复时的“拖尾电流”会导致开关损耗,4ns的短恢复时间可将高频下的损耗降低约30%,同时减少电磁干扰(EMI)。

3. 功率与可靠性

  • 耗散功率(Pd):500mW
    结合低导通压降,可稳定工作在连续负载下;
  • 温度范围:默认商业级(-55℃~+125℃),满足工业及消费电子的环境适应性。

三、封装与可靠性设计

1N4454TR采用DO-35轴向封装,具有以下特点:

  • 体积小巧:直径约2.7mm,长度约5.0mm,适配紧凑电路布局;
  • 安装便捷:轴向引线设计,兼容传统通孔焊接工艺,无需特殊夹具;
  • 可靠性保障:安森美成熟的封装工艺,采用耐高温环氧树脂封装,耐潮湿、抗机械应力,长期工作稳定性达10万小时以上。

四、典型应用场景

1N4454TR的参数特性使其广泛适用于以下场景:

1. 开关电源次级整流

高频开关电源(如手机充电器、LED驱动电源、笔记本适配器)的次级整流电路中,快恢复特性降低开关损耗,提升电源转换效率(可从85%提升至90%以上)。

2. 续流二极管

电机驱动、继电器线圈、电磁阀的续流电路中,4ns恢复时间可快速阻断反向电动势,减少续流时的能量损耗,保护功率器件(如MOSFET)。

3. 低功耗直流整流

电池供电设备(如智能手环、物联网传感器节点)的整流电路中,100nA的低漏电流可延长电池待机时间(比普通二极管提升约20%)。

4. 高频信号整流

射频电路、脉冲电路(如红外接收、无线充电)的整流环节中,快恢复特性保证信号完整性,避免高频失真。

5. 过压保护辅助

配合TVS管、压敏电阻,实现低压电路的过压保护,反向耐压50V可满足12V系统的防护需求。

五、产品优势与价值

1N4454TR的核心价值在于**“平衡型设计”**:

  • 高效率:低Vf+快Trr,兼顾导通损耗与开关损耗;
  • 低功耗:低Ir适合电池供电场景,降低待机电流;
  • 高可靠性:4A浪涌能力+成熟封装,抗恶劣环境;
  • 通用性强:DO-35封装适配90%以上传统电路设计,替换成本低;
  • 性价比高:安森美标准化产品,供货稳定,单价仅为进口快恢复二极管的60%左右。

六、总结

1N4454TR是一款针对低压高频中小功率应用优化的快恢复二极管,安森美的品牌保障与成熟工艺使其成为开关电源、续流电路、低功耗整流等场景的“首选器件”。其参数精准、设计可靠、成本可控,可有效提升电路效率与稳定性,降低系统开发成本。

(全文约900字)

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