WMSIC Electronic Components

LGE 1N4148WS

Model1N4148WS
PackageSOD-323
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LGE 1N4148WS
Type
LGE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LGE
Electronic Component
1N4148WS
Electronic Component
1
Package
SOD-323
Electronic Component
Switch Diode
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0265872144
Current
150mA
Diode
1
Current(Ir)
1uA@75V
(Vf)
1.25V@150mA
Power Dissipation(Pd)
200mW
Electronic Component
Electronic Component
Electronic Component
3000

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

1N4148WS开关二极管产品概述

一、产品定位与品牌背景

1N4148WS是一款高速小信号开关二极管,属于经典1N4148系列的贴片优化版本,由国内半导体厂商鲁光电子(LGE)研发生产。鲁光电子专注于分立器件的研发与制造,产品覆盖二极管、三极管等品类,以参数一致性好、可靠性高著称。1N4148WS继承了1N4148的高速开关特性,同时通过SOD-323小型化封装适配高密度电路需求,是小信号开关、整流及续流场景的主流选择。

二、核心电气参数详解

1N4148WS的电气参数经过严格校准,关键性能如下:

  • 正向导通:正向压降Vf=1.25V(150mA测试),处于硅开关二极管典型范围,导通压降稳定,降低小信号功耗;
  • 反向阻断:直流反向耐压Vr=75V(高于部分标准1N4148的50V),75V下反向漏电流仅1uA,漏电流极低,阻断性能优异;
  • 高速开关:反向恢复时间Trr=4ns,是衡量开关速度的核心指标,可应对高频信号切换;
  • 功率电流:最大整流电流150mA,耗散功率200mW,满足小信号需求;非重复浪涌电流2A,可承受短时间过流冲击;
  • 温度特性:工作温度范围-55℃~+150℃,参数漂移小,适合工业级应用。

三、封装与物理特性

1N4148WS采用SOD-323贴片封装,特点显著:

  • 超小型化:尺寸约1.6mm×0.8mm×0.8mm,体积仅为直插1N4148的1/5,适配智能手机、可穿戴设备等高密度设计;
  • 焊接兼容:支持回流焊、波峰焊,焊接温度窗口宽(峰值≤260℃,持续≤10秒),生产效率高;
  • 机械可靠:环氧树脂封装抗振动、抗冲击,满足工业环境需求。

四、典型应用场景

1N4148WS凭借高速、低漏电流优势,广泛用于:

  1. 高频信号切换:射频电路选通、TTL/CMOS电平转换,4ns恢复时间保证信号完整性;
  2. 小信号整流:5V/3.3V小电流电源整流(如USB充电、电池供电),整流效率高;
  3. 续流保护:继电器、电感的续流二极管,75V耐压抑制反峰电压,保护驱动电路;
  4. 脉冲整形:定时器、时钟电路的脉冲整形,使脉冲前沿陡峭,提升精度;
  5. 消费电子:手机、平板的电源管理、按键防抖,适配小型化设计。

五、性能优势对比

与同类产品相比,1N4148WS优势明显:

  • 更高耐压:75V反向耐压覆盖更多场景;
  • 更快开关:4ns恢复时间优于部分竞品,适合高频;
  • 更小体积:SOD-323比SOT-23小30%,节省PCB空间;
  • 浪涌耐受:2A浪涌电流提升抗干扰能力。

六、使用注意事项

为保证可靠性,需注意:

  1. 参数限制:不超150mA电流、200mW功率、75V耐压;
  2. 静电防护:ESD敏感,需防静电袋、手环操作;
  3. 焊接工艺:回流焊温度≤260℃,持续≤10秒;
  4. 电路设计:感性负载续流二极管极性正确,高频布线缩短减少寄生电感。

1N4148WS以高速、小型化、高可靠的特点,成为小信号电路的经典选择,适配消费电子、工业控制等多领域需求。

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