WMSIC Electronic Components

KUU KAO3401

ModelKAO3401
PackageSOT-23
BrandKUU
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
KUU KAO3401
Type
KUU
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KAO3401
Electronic Component
1
Package
SOT-23
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0264935501
Power Dissipation(Pd)
1.4W
Electronic Component
Electronic Component
Electronic Component
3000
Voltage(Vdss)
30V
Capacitor(Ciss)
645pF

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

KAO3401 产品概述

一、产品简介

KAO3401 是一款小封装的 P 沟道功率 MOSFET,封装为 SOT-23,适用于低电压高侧开关和便携电源管理场景。器件额定漏源耐压为 30V,连续漏极电流 4.1A,典型导通电阻 RDS(on) 为 100mΩ(在 VGS = -2.5V 条件下测得),功率耗散 Pd 为 1.4W。器件由 KUU 提供单颗规格,适合对体积和成本有严格要求的应用。

二、关键参数(要点)

  • 类型:P 沟道 MOSFET(SOT-23)
  • 漏源电压 Vdss:30 V
  • 连续漏极电流 Id:4.1 A
  • 导通电阻 RDS(on):100 mΩ @ VGS = -2.5 V(典型)
  • 功率耗散 Pd:1.4 W(SOT-23 封装受限)
  • 阈值电压 |Vgs(th)|:约 1.2 V(典型)
  • 栅极电荷 Qg:14 nC @ 10 V
  • 输入电容 Ciss:645 pF
  • 反向传输电容 Crss:55 pF
  • 封装:SOT-23,品牌:KUU

三、主要特性与优势

  • 逻辑电平驱动:RDS(on) 在 VGS≈-2.5V 下已达到 100mΩ,适合由低压门极驱动器或 MCU 直接控制,用于 5V 或更低电源系统的高侧开关。
  • 小尺寸封装:SOT-23 适合空间受限的消费类电子与便携设备。
  • 中等开关速度:Qg≈14nC,Ciss/Crss 中等,利于开关损耗与 EMI 的平衡设计。

四、典型应用场景

  • 电源管理中的高侧开关与负载断开(电池或 USB 供电方案)
  • 便携设备的电源路径选择与电源保护
  • 低压马达/继电器驱动(轻载场合)
  • 同步整流或反向电流保护(需注意本征二极管行为)

五、布局与使用建议

  • 热管理:SOT-23 封装 Pd 仅 1.4W,实际使用中需通过 PCB 铜箔散热(加大 GND/电源层铜箔、增加过孔)来降低结温,避免长期大电流工作。
  • 驱动与保护:栅极不要浮空,建议串联小阻(10–100Ω)抑制振铃,并在必要时并联 RC 或 TVS 做瞬态保护。上电/关断时注意 VGS 绝对值不能超过器件额定值(参考厂商规范)。
  • EMI 与开关损耗:Qg 14nC 在高频切换时会带来开关损耗,若用于频繁开关场合建议评估驱动能力与损耗预算。
  • 引脚与封装:不同厂商封装引脚定义可能有差异,实际设计前请查阅 KUU 的具体引脚排列图与封装尺寸。

六、注意事项

  • 本征体二极管和寄生电容会影响反向传导与开关过渡,若用于双向电流路径或同步整流需谨慎验证。
  • 阈值电压为典型值,工作边界宜留裕量;若在接近阈值电压区间工作,RDS(on) 会显著上升。
  • 在高温或散热受限环境下,连续电流能力会下降,应做热仿真或实验验证。

七、总结

KAO3401 在 SOT-23 小封装下提供了面向低压高侧开关的 P 沟道 MOSFET 解决方案,具备 30V 耐压、4.1A 连续电流能力和在低门极驱动下较低的导通电阻。适合便携电源管理、负载断开和空间受限的电源应用。设计时需关注封装热阻、栅极驱动与寄生参数对开关性能的影响,并参考厂商完整数据手册以获得精确的引脚与极限参数。

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