WMSIC Electronic Components

Hottech 1N4148W-T4 1N4148W

Model1N4148W-T4
PackageSOD-123
BrandHottech
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
Hottech 1N4148W-T4
Type
HOTTECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HOTTECH
Electronic Component
1N4148W-T4
Electronic Component
1
Package
SOD-123
Electronic Component
Switch Diode
Electronic Component
0.039g
Electronic Component
1
Electronic Component
BM0264769482
Current
150mA
Diode
Electronic Component
Current(Ir)
1uA@75V
(Vf)
1.25V@150mA
Power Dissipation(Pd)
500mW
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.

1N4148W-T4开关二极管产品概述

一、产品定位与核心属性

1N4148W-T4是Hottech(合科泰)推出的高速开关二极管,采用SOD-123表面贴装封装,主打小信号高频切换场景。作为独立式二极管,其参数设计兼顾开关速度、耐压能力与小型化需求,适配消费电子、通信设备等领域的高密度电路设计,是传统1N4148系列的小型化升级款。

二、关键电气参数解析

电气参数直接决定二极管的性能边界,1N4148W-T4的核心指标及实际意义如下:

  • 正向压降(Vf):1.25V@150mA:在额定正向电流150mA下,导通压降稳定在1.25V,该值平衡了导通损耗与开关速度——若压降过低会增加反向漏电流,此参数设计可兼顾两者。
  • 直流反向耐压(Vr):75V:反向截止时可耐受最高75V电压,满足12V/24V电源系统、通信模块等中低压场景的反向防护需求,避免电压击穿损坏。
  • 整流电流(If):150mA:连续正向电流额定值,适合传感器信号调理、低功率开关等小信号电路的电流承载,超出需降额(如环境温度>85℃时,需按规格书降额至100mA以内)。
  • 耗散功率(Pd):500mW:最大允许功耗,结合Vf与If计算,150mA下实际功耗仅约187.5mW,留有充足裕量,可应对瞬间负载波动或环境温度变化。
  • 反向恢复时间(Trr):4ns:开关二极管的核心指标——反向恢复时间越短,开关速度越快。4ns的水平可适配100MHz以上高频信号,避免因开关延迟导致的信号失真,是射频电路、高速数字电路的关键优势。
  • 非重复峰值浪涌电流(Ifsm):2A:可耐受单次持续≤10ms的2A浪涌电流,有效防护开机瞬间、负载突变等场景的电流冲击,提升电路抗干扰能力。

三、封装与物理特性

1N4148W-T4采用SOD-123表面贴装封装,物理尺寸约2.4mm(长)×1.6mm(宽)×1.0mm(高),具备三大优势:

  • 小型化适配:适配高密度PCB布局,可节省30%以上的电路板空间,适合智能手机、智能穿戴、小型家电等对体积要求严格的产品。
  • 自动化生产:封装符合SMD标准,支持高速贴片机自动化贴装,降低生产难度与成本,适合批量制造。
  • 散热可靠:表面贴装结构利于热量传导,结合500mW的功耗裕量,可在-55℃125℃(存储温度)、0℃85℃(工作温度)范围内稳定工作。

四、品牌与可靠性保障

Hottech(合科泰)作为国内半导体行业的成熟厂商,1N4148W-T4具备以下可靠性特点:

  • 环保合规:符合RoHS 2.0、REACH等国际标准,无铅无卤,适配全球市场需求。
  • 低漏电流:反向漏电流(Ir)仅1μA@75V,可减少电路静态功耗,提升系统效率(如电池供电设备的待机时长)。
  • 引脚兼容:与传统1N4148系列引脚定义一致,便于电路设计替换与升级,无需重新调整PCB布局。

五、典型应用场景

1N4148W-T4的参数特性使其适配多类高频/小信号场景:

  1. 高频信号整流:射频收发模块、蓝牙/WiFi模块中的中频信号整流,4ns Trr确保高频信号完整性。
  2. 开关电源辅助:低功率开关电源的续流二极管、反馈回路箝位,150mA电流满足小功率需求。
  3. 消费电子信号处理:智能手机、平板中的ESD防护辅助(结合75V反向耐压)、信号箝位电路。
  4. 工业控制小信号:PLC、传感器模块中的信号开关、电平转换电路,应对低电压小电流场景。

六、产品优势总结

1N4148W-T4的核心优势可概括为**“高速、小体积、高裕量”**:

  • 4ns反向恢复时间适配高频应用,无信号失真风险;
  • SOD-123封装节省空间,支持自动化生产;
  • 500mW功耗、2A浪涌电流提供充足裕量,应对复杂工况;
  • 低漏电流(1μA@75V)减少静态功耗,提升系统效率。

该产品是小信号高频电路的高性价比选择,可满足消费电子、通信、工业控制等领域的多样化需求。

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