WMSIC Electronic Components

TECH PUBLIC AO3407A

ModelAO3407A
PackageSOT-23
BrandTECH PUBLIC
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
TECH PUBLIC AO3407A
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
AO3407A
Electronic Component
1
Package
SOT-23
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0265434512
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
1.51W
Electronic Component
Electronic Component
Electronic Component
3000
Voltage(Vdss)
30V

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

AO3407A P沟道场效应管(MOSFET)产品概述

一、产品定位与核心参数总览

AO3407A是台舟电子(TECH PUBLIC)推出的工业级P沟道增强型MOSFET,针对低电压(≤30V)、中小功率(≤4.1A)场景优化,兼顾导通损耗、开关速度与封装紧凑性。核心参数如下:

  • 漏源击穿电压(Vdss):30V(适配3.3V/5V/12V等低电压系统)
  • 连续漏极电流(Id):4.1A(满足常见中小负载驱动需求)
  • 导通电阻(RDS(on)):85mΩ@Vgs=4.5V(低导通损耗,减少系统发热)
  • 阈值电压(Vgs(th)):2.5V@Id=250uA(兼容3.3V/5V MCU控制,避免误触发)
  • 栅极总电荷(Qg):6.8nC(开关速度快,适合高频应用)
  • 电容特性:Ciss=580pF、Crss=74pF、Coss=98pF(优化开关瞬态,降低电磁干扰)
  • 工作温度范围:-55℃~+150℃(符合工业级可靠性要求)
  • 耗散功率(Pd):1.51W(封装散热需匹配功率需求)

二、关键性能优势

  1. 低导通损耗与高效能
    85mΩ的导通电阻在P沟道器件中处于优异水平——当负载电流为4A时,导通压降仅约0.34V,功率损耗不足1.4W,可显著降低系统发热,减少散热片等辅助设计成本。

  2. 快速开关特性
    6.8nC的栅极总电荷(Qg)远低于同功率级产品平均水平,配合Crss=74pF的反向传输电容,开关延迟时间短,适合100kHz以下的高频应用(如电源路径控制、小型DC-DC转换)。

  3. 宽温度适应性
    -55℃~+150℃的工作范围覆盖了工业环境(车载电子、户外设备)的极端温度需求,可靠性符合IEC 60747-2标准,无需额外降额设计。

  4. 紧凑封装与易集成
    采用SOT-23封装(尺寸约2.9×2.5×1.1mm),体积比TO-92封装缩小70%以上,可大幅节省PCB空间,适合便携式设备(手机、智能手环)、小型模块电源等高密度集成场景。

  5. 电压兼容性强
    2.5V阈值电压既避免了1.8V低电压信号的误触发,又能被3.3V/5V MCU直接驱动,无需额外电平转换电路,简化系统设计流程。

三、典型应用场景

AO3407A的参数匹配性使其在多个领域广泛落地:

  1. 便携式设备电源管理
    手机、平板、蓝牙耳机的电池保护电路、充电路径控制(低导通损耗减少电池放电损耗)。

  2. 小型电机驱动
    玩具电机、小型风扇、微型泵的驱动(4.1A连续电流满足负载需求,开关速度快实现平稳调速)。

  3. 低电压电源开关
    3.3V/5V系统的负载通断控制(如USB端口电源开关、外设电源管理)。

  4. 电平转换与逻辑控制
    高侧开关电路(P沟道特性适合高侧驱动)、TTL/CMOS逻辑电平转换。

  5. 工业控制与车载电子
    小型传感器模块电源控制、车载USB充电接口开关(宽温度范围适配车载-40℃~85℃环境)。

四、封装与可靠性设计

1. 引脚定义(SOT-23封装)

  • 引脚1:栅极(G)——接收控制信号(需负电压导通,如Vgs=-4.5V)
  • 引脚2:漏极(D)——连接负载端(高侧或低侧)
  • 引脚3:源极(S)——连接电源地或信号地

2. 散热注意事项

因SOT-23封装散热面积有限,当连续工作功率接近1.51W时,需在PCB上增加漏极引脚的铜箔面积(建议≥10mm²),或配合小型散热片,避免器件过热降额。

五、选型与替代参考

  • 选型要点:需根据负载电流(≤4.1A)、工作电压(≤30V)、开关频率(≤100kHz)选择;若负载电流更高(如5A),可升级至AO3408(Id=5.8A)。
  • 兼容替代:同参数级替代型号包括AO3407(无后缀,参数接近)、SI2309(Id=3A,需降额20%使用),但需注意阈值电压与封装一致性。

总结

AO3407A作为一款高性价比P沟道MOSFET,在低电压中小功率场景下平衡了导通损耗、开关速度与可靠性,尤其适合便携式设备、工业控制等对体积与效率要求较高的领域。台舟电子的工业级设计确保其在极端环境下的稳定工作,是系统设计中电源管理、负载驱动的优选器件之一。

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