WMSIC Electronic Components

ST LL914PF diode LL914PF

ModelLL914PF
PackageLL-34
BrandST
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ST LL914PF
Type
ST
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST
Electronic Component
LL914PF
Electronic Component
1
Package
LL-34
Electronic Component
Switch Diode
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0264532686
Current
75mA
Diode
1
Current(Ir)
25nA
(Vf)
1V@10mA
Power Dissipation(Pd)
500mW
Electronic Component
65℃~+175℃
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.

ST先科LL914PF开关二极管产品概述

一、产品核心定位

LL914PF是ST先科推出的高速小信号开关二极管,采用LL-34表面贴装封装,针对高频切换、小功率整流及宽温环境应用优化,具备低正向压降、快速反向恢复、极低漏电流等核心特性,可满足消费电子、汽车电子、工业控制等领域的信号处理与保护需求。

二、关键参数详解(含应用意义)

2.1 正向特性

  • 正向压降(Vf):1V@10mA
    该参数表明在典型工作电流下,二极管正向导通损耗低,可减少信号路径的电压衰减,适合对功耗敏感的小信号电路(如电池供电设备的信号传输)。

2.2 反向特性

  • 直流反向耐压(Vr):100V
    满足多数低压电路的反向阻断需求,可避免反向电压对电路的损坏;
  • 反向漏电流(Ir):25nA
    漏电流极小,静态损耗可忽略,适合对静态功耗要求严格的场景(如低功耗传感器接口);
  • 反向恢复时间(Trr):4ns
    属于高速开关级别,远快于普通开关二极管(通常几十ns),可实现高频信号的快速切换,避免信号失真。

2.3 功率与电流容量

  • 持续整流电流(If):75mA
    可稳定承载小功率信号的持续电流,适合低功耗电源整流(如5V/10mA级别的电源);
  • 最大耗散功率(Pd):500mW
    结合正向压降与电流,可支撑脉冲工况下的短时间大电流(需注意脉冲占空比,避免超过功率极限)。

2.4 温度适应性

  • 工作结温范围:-65℃~+175℃
    覆盖极端温度场景,可应用于汽车发动机舱(高温)、极地设备(低温)等环境,可靠性强。

三、封装与品牌优势

3.1 LL-34封装特点

LL-34为小型表面贴装封装,尺寸紧凑(典型值1.6mm×0.8mm×0.6mm),适配高密度PCB设计;采用贴片工艺,可兼容自动化生产线,焊接可靠性高,适合批量生产。

3.2 ST先科品牌保障

ST先科作为国内半导体行业知名厂商,LL914PF经过工业级可靠性测试(如高低温循环、湿度老化、振动测试),符合RoHS环保标准,供货周期稳定,可满足不同行业的量产需求。

四、典型应用场景

4.1 高频开关电路

因Trr仅4ns,适合快速切换的信号路径,如:

  • 射频前端的信号选通;
  • 逻辑门电路的输出切换;
  • 高速数据传输接口的信号隔离。

4.2 小信号整流

75mA持续电流满足低功耗电源的整流需求,如:

  • 电池供电设备的充电保护电路;
  • 传感器模块的电源整流;
  • 低电压(≤100V)的直流电源转换。

4.3 宽温环境应用

-65℃~+175℃结温范围,可应用于:

  • 汽车电子(如传感器接口、仪表盘电路);
  • 工业控制(如PLC输入输出模块);
  • 航空航天(如卫星低功耗电路)。

4.4 保护电路

结合100V反向耐压与低漏电流,可用于:

  • ESD静电保护(如手机接口、电脑USB端口);
  • 过压钳位(如电源浪涌保护);
  • 反向极性保护(如电池反接防护)。

五、使用注意事项

  1. 电流与功率限制:持续电流不超过75mA,脉冲电流需结合Pd计算(如脉冲宽度1ms,占空比1%,允许峰值电流约22mA);
  2. 温度控制:工作结温不超过175℃,建议在PCB上预留散热铜箔(如封装焊盘连接10mm²以上铜箔);
  3. 焊接规范:回流焊温度≤260℃,焊接时间≤10秒,避免高温损坏器件;
  4. 反向电压:避免施加超过100V的反向电压,防止击穿失效。

六、总结

LL914PF凭借高速开关、低漏电流、宽温适应性及小型LL-34封装,成为小功率高频电路、宽温应用的理想选择,可广泛应用于消费电子、汽车电子、工业控制等领域,满足信号处理、整流、保护等多种需求。

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