WMSIC Electronic Components

Jingdao Microelectronics 1N4003W

Model1N4003W
PackageSOD-123FL
BrandElectronic
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic 1N4003W
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
1N4003W
Electronic Component
1
Package
SOD-123FL
Electronic Component
General Purpose Diode
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0259314225
Current
1A
Diode
Electronic Component
Current(Ir)
5uA@200V
(Vf)
1.1V@1A
Electronic Component
Electronic Component
Electronic Component
3000
Voltage Rating(Vr)
200V

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

1N4003W通用整流二极管产品概述

一、产品基本定位与品牌背景

1N4003W是晶导微电子推出的独立式通用整流二极管,针对中小功率电子设备的整流、反向截止等基础功能设计,兼顾小型化封装与稳定电气性能,适用于家电、通信、电源等领域的批量应用场景。晶导微电子作为国内功率半导体领域的主流厂商,其器件以高性价比、工艺成熟度高为核心优势,1N4003W是该品牌针对SOD-123FL封装的经典衍生型号,适配当前电子设备小型化、轻量化的设计趋势。

二、核心电气参数解析

1N4003W的关键参数围绕“1A连续电流+200V反向耐压”的核心规格展开,具体如下:

  • 正向压降(Vf):1.1V@1A——导通状态下的电压损耗控制在合理范围,相比部分同类器件降低约0.1-0.2V,可减少整流环节的功率损耗,尤其适合对效率有要求的低压电源设计;
  • 直流反向耐压(Vr):200V——可承受200V以内的反向直流电压,满足低压直流系统的反向保护、小功率交流整流(如110V交流场景)等需求,实际应用需确保反向峰值电压不超过该值;
  • 整流电流(If):1A——连续直流工作电流能力为1A,是中小功率整流的典型规格,可覆盖多数小家电、小型电源的电流需求;
  • 反向漏电流(Ir):5uA@200V——反向偏置下的漏电流极小,一方面降低待机功耗,另一方面提升器件在反向电压下的稳定性,减少漏电导致的发热风险。

三、封装与物理特性

1N4003W采用SOD-123FL表面贴装封装,是一款小尺寸、高密度的贴装封装,物理规格符合行业标准:

  • 封装尺寸:长度约3.0mm,宽度约2.5mm,高度约1.1mm(典型值),相比传统DO-41直插封装体积缩小约70%,可显著提升PCB布局密度;
  • 焊接兼容性:支持回流焊、波峰焊等主流贴装工艺,引脚间距符合SMT生产线的自动化作业要求,适合批量生产;
  • 温度范围:采用耐高温、抗老化的塑料封装,可承受-55℃至+150℃的工作温度范围(典型值),适配宽温环境下的应用。

四、典型应用场景

1N4003W的规格特性使其适用于以下常见场景:

  1. 小家电电源整流:如台灯、加湿器、小型风扇等低压电源的半波/全桥整流环节,满足1A以内的电流需求;
  2. 小型开关电源辅助电路:如待机电源、辅助供电电路中的整流、反向截止功能,利用其小封装优势节省空间;
  3. 电池充电保护:作为反向截止二极管,防止电池过充或反向放电,低漏电流特性可减少电池自放电损耗;
  4. LED驱动电路:在低压LED灯带、小功率LED照明的整流环节中,低导通压降可提升LED的发光效率;
  5. 通信设备信号整流:如低功耗通信模块中的信号整流、极性保护,小漏电流避免信号干扰。

五、产品优势与市场价值

相比同类进口或国产器件,1N4003W具备以下核心优势:

  1. 高性价比:晶导微电子的国产器件成本低于进口同类(如某国际品牌的SOD-123FL封装1A二极管),适合中低端电子设备的批量采购;
  2. 小封装大电流:在SOD-123FL的小尺寸下实现1A连续电流,平衡了小型化与电流能力,解决了传统小封装器件电流不足的问题;
  3. 低损耗与高可靠:1.1V的正向压降减少导通损耗,5uA的反向漏电流提升待机效率,同时器件的反向耐压稳定性经过批量验证,故障率低;
  4. 环保合规:符合RoHS 2.0及REACH等环保标准,适配出口型电子设备的要求。

六、选型与使用注意事项

为保证1N4003W的稳定工作,需注意以下事项:

  1. 电流降额:连续工作电流建议控制在0.8A以内(降额20%),避免长期满负荷工作导致器件老化加速;
  2. 反向耐压余量:实际应用中反向峰值电压应不超过180V(留10%余量),防止过压击穿;
  3. 散热设计:虽为贴装封装,但1A电流下需确保PCB铜箔宽度≥1mm(或采用多个过孔连接散热层),避免局部过热;
  4. 焊接温度:回流焊峰值温度不超过260℃(持续时间≤10秒),波峰焊温度不超过245℃(持续时间≤5秒),防止封装损坏。

综上,1N4003W以“小封装、高可靠、低成本”为核心特点,是中小功率电子设备整流环节的高性价比选型。

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