WMSIC Electronic Components

Jingdao Microelectronics MMBT4401

ModelMMBT4401
PackageSOT-23
BrandElectronic
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
Electronic MMBT4401
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
MMBT4401
Electronic Component
1
Package
SOT-23
Electronic Component
1 NPN
Electronic Component
Transistor(BJT)
Electronic Component
0.033g
Electronic Component
1
Electronic Component
BM0265390950
Operating Temperature
55℃~+150℃
Transistor Type
NPN
Frequency(f T)
250MHz
Power Dissipation(Pd)
300mW
Electronic Component
Electronic Component
Electronic Component
3000

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

MMBT4401 NPN型三极管产品概述

MMBT4401是晶导微电子推出的NPN型双极结型晶体管(BJT),采用SOT-23表面贴装封装,兼具小体积、宽温适应性与基础功率性能,适用于消费电子、小型工业控制等领域的小信号放大及低速开关场景。

一、产品核心身份与定位

该器件属于小信号功率型NPN三极管,并非高压/大电流功率管,而是针对中小功率、紧凑布局场景设计。单封装(1个NPN管芯)结构配合SOT-23封装,可直接集成于小型PCB中,降低电路整体体积。晶导微电子作为国内成熟半导体厂商,产品一致性符合工业级基础要求。

二、关键电性能参数解析

各参数明确了器件适用边界,核心意义如下:

  • 集电极电流(Ic):600mA:最大连续集电极电流,需注意SOT-23封装散热限制,避免长时间接近此值;
  • 集射极击穿电压(Vceo):40V:基极开路时集射极耐受电压,决定电路最高工作电压上限;
  • 耗散功率(Pd):300mW:结温不超额定值时的最大允许功率,需结合环境温度调整负载;
  • 直流电流增益(hFE):20:指定工作点(如Vce=10V、Ic=10mA)下的电流放大倍数,适配中小信号线性放大;
  • 特征频率(fT):250MHz:电流增益带宽积,250MHz以下频率仍具备有效放大能力,可用于低频射频场景;
  • 集电极截止电流(Icbo):100nA:发射极开路时集基漏电流,数值小意味着截止状态功耗低、噪声小;
  • 集射极饱和电压(VCE(sat)):950mV:饱和状态(如Ic=500mA)下的集射压降,决定开关应用的导通损耗;
  • 射基极击穿电压(Vebo):6V:集电极开路时射基耐受电压,需避免基极电流过大导致反向击穿。

三、封装形式与物理特性

采用SOT-23表面贴装封装,尺寸约1.6mm(长)×1.0mm(宽)×0.8mm(高),3引脚标准配置(1脚基极B、2脚发射极E、3脚集电极C)。优势包括:

  1. 体积小,适配智能穿戴、遥控器等小型化设备;
  2. 贴装效率高,适合自动化生产;
  3. 引脚间距合理,减少焊接短路风险。

四、典型应用场景

结合参数特性,典型应用集中于:

  1. 小信号线性放大:音频前置放大、传感器信号调理(温度/压力传感器输出放大);
  2. 低速开关控制:LED指示灯驱动、小型继电器线圈驱动(5V/12V)、按键扫描电路;
  3. 低频射频处理:27MHz/433MHz频段小信号放大(无线遥控模块);
  4. 电源辅助电路:线性稳压辅助调整管、过流保护检测管;
  5. 消费电子终端:手机充电器辅助控制、智能音箱信号放大、遥控器编码电路。

五、工作环境与可靠性

工作温度范围**-55℃+150℃**,覆盖工业级(-40℃+85℃)及部分高温场景(如汽车电子辅助模块),极端温度下性能稳定。低截止电流(100nA)确保截止状态低功耗,封装抗振动/冲击能力符合常规电子设备要求。

六、品质与适配性

晶导微电子的MMBT4401经标准化测试,参数一致性良好,可直接替换同规格通用型号。单管封装适合小批量原型开发或大批量量产,成本优势明显,是中小功率场景的经济选择。

总结:MMBT4401是高性价比NPN小信号三极管,凭借小体积、宽温范围与基础功率性能,可满足消费电子、小型工业控制等领域多样化需求。

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