WMSIC Electronic Components

VBsemi AOD4189-VB AOD4189

ModelAOD4189-VB
PackageTO-252
BrandVBSEMI
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
VBsemi AOD4189-VB
Type
VBSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
VBSEMI
Electronic Component
AOD4189-VB
Electronic Component
1
Package
TO-252
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.458g
Electronic Component
1
Electronic Component
BM0264573283
Operating Temperature
55℃~+175℃
Power Dissipation(Pd)
136W
Electronic Component
Electronic Component
Electronic Component
2500
Voltage(Vdss)
40V

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

AOD4189-VB(VBsemi)P沟道MOSFET产品概述

AOD4189-VB是微碧半导体(VBsemi) 推出的一款P沟道增强型MOSFET,采用TO-252(DPAK)贴片封装,针对12V/24V低压大电流场景优化设计,具备低导通损耗、宽温适应性等核心优势,广泛适用于消费电子、工业控制、电源管理等领域的负载开关、电机驱动等电路。

一、核心身份与应用定位

AOD4189-VB属于低压P沟道功率器件范畴,其设计核心是为低压系统提供高效功率开关——区别于高压MOSFET,低压大电流MOS更关注导通损耗控制与驱动便捷性;而P沟道的特性(源极可直接接电源正极)使其在低侧开关、电池供电路径管理中无需额外电平转换,大幅简化电路设计。

二、关键电参数解析

AOD4189-VB的电参数围绕“低压大电流”需求精准优化,关键指标的应用价值如下:

2.1 电压与电流能力

  • 漏源击穿电压(Vdss):40V:满足12V、24V系统的电压裕量(系统电压通常不超过击穿电压的80%),避免过压损坏;
  • 连续漏极电流(Id):50A:25℃环境下可稳定承载50A持续电流,配合散热片可进一步提升短时间脉冲电流能力,覆盖中等功率负载(如小型电机、大功率LED模组);
  • 脉冲电流能力:虽未明确给出,但基于TO-252封装与功率耗散,可支持ms级更高电流脉冲,适配动态负载场景(如电机启动瞬间)。

2.2 导通损耗与功率能力

  • 导通电阻(RDS(on)):12mΩ@10V栅源电压(Vgs):这是该器件的核心亮点——低导通电阻直接降低导通损耗(公式:P=I²·R),50A电流下导通损耗仅为30W,远低于高阻MOSFET,显著提升电源效率;
  • 最大耗散功率(Pd):136W:25℃环境下通过TO-252封装的PCB散热,可稳定耗散136W功率;环境温度升高时需降额使用(如100℃时Pd约70W),仍能满足多数低压场景需求。

2.3 开关特性与驱动兼容性

  • 栅极电荷量(Qg):60nC@10V Vgs:栅极电荷是驱动损耗的关键指标,60nC属于中等水平,意味着普通MCU或专用驱动IC即可满足驱动需求,无需复杂驱动电路,降低设计成本;
  • 电容参数:输入电容(Ciss=3nF@25V)、反向传输电容(Crss=352pF)、输出电容(Coss=508pF)——电容值适中,开关速度(上升/下降时间)处于合理范围,兼顾开关损耗与EMI控制,避免高频干扰问题。

三、封装与散热特性

AOD4189-VB采用TO-252(DPAK)贴片封装,具有三大优势:

  1. 体积紧凑:封装尺寸约6.5×5.5×1.7mm,占用PCB面积小,适合便携式设备、小型电源模块等小型化产品;
  2. 散热便捷:漏极引脚与PCB大面积铜箔可有效散热,若负载电流接近50A,可在封装上方贴装散热片进一步提升散热能力;
  3. 焊接兼容:支持回流焊工艺,适配自动化组装线,生产效率高。

四、典型应用场景

结合参数特性,AOD4189-VB的核心应用场景包括:

  1. 低压负载开关:笔记本电脑、平板电脑的电池供电路径开关,或12V/24V电源系统的负载通断控制(P沟道低侧开关无需电平转换);
  2. 小型电机驱动:玩具电机、小型家电(加湿器、风扇)的正反转控制,或小型工业电机的低速驱动;
  3. 电源管理模块:DC-DC降压转换器的低压侧同步整流、线性稳压调整管,或电池保护电路的开关;
  4. LED驱动:12V/24V低压LED灯带、大功率LED模组的恒流/恒压控制(低导通电阻降低驱动损耗);
  5. 工业控制电路:小型PLC的I/O模块、传感器驱动电路(宽温范围适配工业环境温度波动)。

五、性能优势总结

AOD4189-VB的核心竞争力体现在:

  • 低导通损耗:12mΩ的RDS(on)大幅降低大电流下的功率损耗,提升系统效率;
  • 宽温适应性:-55℃~+175℃的工作温度范围,满足工业级、车载级(部分场景)的温度要求;
  • 驱动便捷:中等栅极电荷与电容值,无需复杂驱动电路,降低设计成本;
  • 封装适配:TO-252封装兼顾体积与散热,适合小型化与自动化生产。

六、可靠性与应用注意事项

AOD4189-VB符合RoHS环保标准,通过温度循环、湿度老化等可靠性测试,但应用时需注意:

  1. 降额使用:环境温度超过25℃时,需根据温度曲线降额(如100℃时Pd约70W);
  2. 栅极保护:避免栅源电压超过±20V(MOSFET典型栅极耐压),防止氧化层击穿;
  3. 散热设计:大电流负载下需在PCB设计足够散热铜箔,或贴装散热片。

综上,AOD4189-VB是一款专为低压大电流场景打造的高性价比P沟道MOSFET,在效率、可靠性与成本之间实现了良好平衡,适合多种中低端功率应用。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.