WMSIC Electronic Components

ElecSuper AO3404A

ModelAO3404A
PackageSOT23-3L
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+

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Technical data

Product details

19 specifications

Core information

Product name
Elec Super AO3404A
Type
ELECSUPER
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ELECSUPER
Electronic Component
AO3404A
Electronic Component
1
Package
SOT23-3L
Electronic Component
1 N
Type
N
Electronic Component
MOSFET
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0258808392
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
1.4W
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.

AO3404A 产品概述(ElecSuper / 静芯微)—— SOT-23 封装 N 沟道 MOSFET

一、概述

AO3404A 为一款小功率、高性能的 N 沟道场效应晶体管(MOSFET),单只器件封装为 SOT-23-3L,适用于便携式电源管理与低压大电流开关场合。器件在 30V 漏源耐压下,具备较低的导通电阻与适中的开关特性,便于在体积受限的 PCB 上实现高效能量控制。

二、主要参数(摘要)

  • 数量:1 个 N 沟道
  • 漏源电压 Vdss:30 V
  • 连续漏极电流 Id:6.2 A
  • 导通电阻 RDS(on):17 mΩ @ Vgs=10 V
  • 功耗 Pd:1.4 W(SOT-23 热性能受 PCB 散热限制)
  • 阈值电压 Vgs(th):1.5 V @ Id=250 μA
  • 栅极电荷 Qg:9.8 nC @ Vgs=10 V
  • 输入电容 Ciss:255 pF
  • 输出电容 Coss:45 pF
  • 反向传输电容 Crss:35 pF
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 封装:SOT23-3L
  • 品牌:ElecSuper(静芯微)

三、性能亮点与工程要点

  • 低导通阻抗(17 mΩ@10V):在充分栅极驱动下,导通损耗低,适合承担数安培级别的连续电流。
  • 合理的栅极电荷(9.8 nC):在开关应用中开关损耗与驱动功率可控,驱动器选择时注意驱动电流能力与切换频率匹配。
  • 小封装、高密度:SOT-23 外形便于表面贴装,适合手机、便携设备和板上电源管理,但散热能力有限,需靠 PCB 进行热管理。
  • 宽温度工作范围:适应工业级温度要求。

四、典型应用场景与设计建议

  • 应用:低压 DC-DC 降压转换器(同步整流或低端开关)、负载开关、MOSFET 级联驱动、背光或电机驱动的小功率段、电源保护与功耗管理。
  • 栅极驱动:若需达到 RDS(on) 标称值,应采用接近 10 V 的栅压驱动;在 4.5 V 或更低逻辑电平下 RDS(on) 会显著升高,需评估导通损耗。
  • 散热建议:SOT-23 的 Pd 受 PCB 铜箔面积与过孔影响显著,建议在热源区域使用较大铜箔和多过孔散热通道,以提升连续载流能力与可靠性。
  • 开关设计:基于 Qg 与 Ciss/Crss 特性,在高频切换时需关注驱动器的电流能力与电磁干扰(EMI)控制,必要时加阻尼电阻或缓启动措施。

五、封装与可靠性提示

  • SOT-23-3L 便于自动贴装,但热阻较大,长时间高电流工作需良好 PCB 散热布局。
  • 工作温度 -55 ℃ ~ +150 ℃ 覆盖工业级使用,但在高温环境下需重新评估 RDS(on) 与寿命特性。
  • 在实际选型时,建议结合系统最大瞬态电压、浪涌电流、开关频率及驱动电平,进行热仿真与样片测试验证。

总结:AO3404A(ElecSuper 静芯微)是一款面向中低电压、数安培等级开关与负载控制的 N 沟道 MOSFET,兼具低导通损耗与适中开关特性,尤其适合空间受限的电源管理方案;在设计中需重视栅极驱动电压和 PCB 散热以充分发挥器件性能。

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