WMSIC Electronic Components

ElecSuper 1N4148WS

Model1N4148WS
PackageSOD-323
BrandElec Super
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
Elec Super 1N4148WS
Type
ELECSUPER
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ELECSUPER
Electronic Component
1N4148WS
Electronic Component
1
Package
SOD-323
Electronic Component
Switch Diode
Electronic Component
0.027g
Electronic Component
1
Electronic Component
BM0228788619
Current
150mA
Diode
Electronic Component
Current(Ir)
5uA
(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 产品概述

1N4148WS 是 ElecSuper(静芯微)推出的一款独立式开关二极管,采用 SOD-323 小型表贴封装。该器件以高速切换、低反向漏电和较高反向耐压为特点,适用于电话、通信、数据接口和各种高频脉冲电路中的整流与信号开关保护。

一、主要电气参数与性能亮点

  • 正向压降 Vf:1.25 V @ If = 150 mA(在较大电流下保持较低压降,有利于降低导通损耗)。
  • 直流反向耐压 Vr:100 V,适合较高电压环境下的反向阻断需求。
  • 连续整流电流 If:150 mA(推荐在此范围内长期工作,超过需注意散热与热冲击)。
  • 最大耗散功率 Pd:200 mW(受 SOD-323 封装散热限制,需考虑 PCB 热设计与降额)。
  • 反向电流 Ir:5 μA(在额定条件下漏电小,适合精确信号电路)。
  • 反向恢复时间 Trr:4 ns(高速开关能力良好,适用于高频脉冲场景)。
  • 非重复峰值浪涌电流 Ifsm:2 A(允许短时浪涌,但需遵循脉冲宽度与频率限制)。

二、封装与机械特性

1N4148WS 采用 SOD-323 小封装,体积微小,适合高密度 PCB 布局。小封装带来有限的热阻,需在 PCB 设计中留意散热路径与铜箔面积,必要时在器件下方或焊盘处增加散热铜箔以改善功率耗散能力。

三、典型应用场景

  • 高速数字信号开关与整形电路(例如逻辑接口、门电路保护)。
  • 高频脉冲整流与钳位电路(示波器前端、采样保持电路)。
  • 通信设备中的保护与隔离(防止反向电压对敏感电路的损伤)。
  • 低功耗便携设备中用于信号整流与保护的替代元件。

四、设计与使用建议

  • 功率与温升:Pd=200 mW 为封装限制值,建议在设计时进行降额(例如工作点不超过额定功率的 50–70%),并测试实际 PCB 上的温升。
  • 开关性能:Trr≈4 ns 适用于大部分高速信号,但在极高速或高电流脉冲场合需验证恢复特性对系统影响(如交越失真)。
  • 反向电流:Ir 为 5 μA,适合多数低频与中等精度信号,但在超低电流计量或高阻节点需关注漏电影响。
  • 浪涌限制:Ifsm=2 A 为短时脉冲能力,长期或重复大幅浪涌会导致损坏,需外加保护或限制电路。

五、可靠性与注意事项

  • ESD 与焊接:SOD-323 为小型表贴,推荐遵循制造商回流焊温度曲线并采取静电防护措施。
  • 存储与环境:避免潮湿、高温环境长期存放;封装胶体与引脚易受过热影响,建议按规格书执行预烘烤与回流工艺。
  • 测试建议:在产品验证阶段,应在目标 PCB 板上做温度、反向耐压、漏电、开关波形等专项测试,确保实际工作点满足系统要求。

六、替代与匹配说明

1N4148WS 属于 1N4148 系列的小信号高速开关二极管的 SMD 变型,若需更高功率或不同封装,可选用同系列其它封装或等效型号;若需要更低正向压降或更小反向恢复时间,应在规格书中比较 Vf、Trr 与 Pd 等关键参数后选型。

七、采购与文档

品牌:ElecSuper(静芯微);封装:SOD-323。为保证性能一致性与可靠性,建议在采购前获取并确认厂商最新规格书(datasheet)、焊接工艺说明与可靠性报告。若有批量应用,可与厂家沟通样品测试与长期供应保障。

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