WMSIC Electronic Components

PANJIT 1N4148WS-AU_R1_000A1 1N4148WS

Model1N4148WS-AU_R1_000A1
PackageSOD-323
BrandPANJIT
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
PANJIT 1N4148WS-AU_R1_000A1
Type
PANJIT
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PANJIT
Electronic Component
1N4148WS-AU_R1_000A1
Electronic Component
1
Package
SOD-323
Electronic Component
Switch Diode
Electronic Component
0.018g
Electronic Component
1
Electronic Component
BM0227309753
Current
200mA
Diode
1
Current(Ir)
2.5uA@75V
(Vf)
1.25V@150mA
Power Dissipation(Pd)
250mW
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component

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

1N4148WS-AU_R1_000A1 产品概述

一、产品简介

1N4148WS-AU_R1_000A1 是 PANJIT(强茂) 出品的一款高性能开关二极管,采用 SOD-323 小外形封装,面向高速开关与信号整流应用。器件在宽温度范围内工作稳定(结温 -55℃ ~ +150℃),具有极低的反向漏流和快速的反向恢复特性,适合表面贴装(SMT)工艺,是替代传统 1N4148 的微小封装升级选择。

二、主要特性

  • 典型正向压降:Vf = 1.25 V @ IF = 150 mA(典型测试点)
  • 额定整流电流:IF(AV) = 200 mA(连续整流能力,需注意功耗限制)
  • 非重复峰值浪涌电流:Ifsm = 4 A(单次脉冲突发)
  • 直流反向耐压:Vr = 75 V
  • 反向电流:Ir = 2.5 μA @ 75 V(非常低的漏电流)
  • 反向恢复时间:Trr = 4 ns(典型值,适合高速开关)
  • 耗散功率:Pd = 250 mW(封装热功耗限制)
  • 工作结温范围:-55℃ 至 +150℃
  • 封装:SOD-323(超小型贴片封装,适合高密度布局)

三、电气与热性能要点

  • 高频开关性能:Trr 约 4 ns,表明在 TTL/CMOS 级别的快速开关和脉冲信号路径上响应迅速,适用于高速逻辑切换、脉冲整形及高速检测电路。
  • 功耗与散热:封装最大耗散功率为 250 mW。若按 Vf ≈ 1.25 V 计算,当正向电流达到 200 mA 时,二极管在理想情况下的功耗就接近 250 mW 边界,因此在连续工作时应保证合适的电流/功率余量及 PCB 散热(如增加铜箔面积或热驻流路径)。为提高可靠性,推荐在连续应用中尽量控制工作电流 ≤150 mA 或对功耗进行充分热设计。
  • 浪涌承受能力:Ifsm 4 A 适用于短时浪涌或冲击电流,但不适合频繁重复的大浪涌场景。脉冲使用时需参考脉冲宽度和热时间常数。
  • 反向特性:75 V 反向耐压和 2.5 μA 的低漏电流使其在高阻抗或需要低泄漏的检测和隔离电路中表现良好。

四、典型应用

  • 高速开关与逻辑电路:作为快速切换元件使用于高速信号路径、门电路或移位寄存器的保护。
  • 信号整流与脉冲整形:在小功率整流、脉冲检波、脉冲限幅电路中表现优秀。
  • 保护与钳位:用于低能量浪涌钳位、反向保护或接口防反接(配合限流元件)。
  • 通信与仪表:适用于射频前端小信号隔离、传感器信号链路及便携仪器中的小电流信号处理。

五、使用建议与注意事项

  • 电流与功耗匹配:在设计中需同时考虑 IF、Vf 与 Pd。若需要长时间工作在接近 200 mA 的电流,应确保 PCB 有足够散热路径并考虑环境温度与封装温升;更稳妥的做法是将连续工作电流限制在 150 mA 或以下。
  • 脉冲与浪涌限制:4 A 的 Ifsm 仅适用于非重复短脉冲,避免在无恰当散热的条件下频繁发生大幅浪涌。
  • 板级布局:SOD-323 为微小封装,建议按供应商推荐封装焊盘布局设计,保证焊点可靠性并预留足够的铜面积以利散热。
  • 焊接工艺:采用常规回流焊工艺贴装,注意温度轮廓符合器件及焊料要求,避免过热损伤器件。
  • 环境与老化:在高温、高湿或强电场环境长期工作时,应考虑器件的长期老化与漏电流变化,必要时做环境应力测试验证。

六、封装与采购信息

  • 品牌:PANJIT(强茂)
  • 封装型号:SOD-323,适用于高密度 SMT 组装
  • 建议在选型与采购时参考 PANJIT 官方数据手册以获取完整的典型曲线、温度系数、焊接规范及可靠性试验结果,从而在电路设计与可靠性评估中做出准确判断。

总结:1N4148WS-AU_R1_000A1 在保持极低漏流与快速恢复的同时,提供了小体积封装与良好的浪涌能力,适合各类高速信号与低功耗整流场合。设计时需重视功耗热管理与浪涌保护,以确保长期稳定可靠运行。

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