WMSIC Electronic Components

TECH PUBLIC MMBT5401T

ModelMMBT5401T
PackageSOT-523
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TECH PUBLIC MMBT5401T
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
MMBT5401T
Electronic Component
1
Package
SOT-523
Electronic Component
1 PNP
Electronic Component
Transistor(BJT)
Electronic Component
0.024g
Electronic Component
1
Electronic Component
BM0257708797
Operating Temperature
55℃~+150℃
Transistor Type
PNP
Frequency(f T)
100MHz
Power Dissipation(Pd)
200mW
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.

MMBT5401T 产品概述

一、产品简介

MMBT5401T 为 TECH PUBLIC(台舟电子)出品的一款高压 PNP 小信号晶体管,采用微小封装 SOT-523。该器件结合了较高的集电极-发射极击穿电压与适中的增益与频率特性,适合在空间受限且需承受高电压的模拟/开关电路中使用。单件数量:1 个 PNP 晶体管。

二、主要电气参数

  • 晶体管类型:PNP
  • 最大集电极电流 (Ic):600 mA
  • 集-射击穿电压 (Vceo):150 V
  • 最大耗散功率 (Pd):200 mW
  • 直流电流增益 (hFE):60 @ Ic = 10 mA, VCE = 5 V
  • 特征频率 (fT):100 MHz
  • 集电极截止电流 (Icbo):约 50 nA
  • 集-射饱和电压 (VCE(sat)):约 200 mV
  • 射基极击穿电压 (Vebo):5 V
  • 工作环境温度范围:-55 ℃ ~ +150 ℃
  • 封装:SOT-523(超小型表面贴装)

三、特点与优势

  • 高耐压:Vceo 150 V,使该器件适用于高压控制与保护电路,如高压电源的低侧/高侧辅助电路、继电器驱动前置保护等场合。
  • 小体积:SOT-523 超小封装,适合高密度贴装和便携设备的空间受限设计。
  • 良好增益与频率特性:在 10 mA 条件下 hFE ≈ 60,可满足常见小信号放大与缓冲需求;fT≈100 MHz 支持中低频快速开关与小信号放大。
  • 低饱和压:VCE(sat) ≈ 200 mV,有利于降低开关损耗和功耗(在适当偏置条件下)。
  • 低漏电流:Icbo 约 50 nA,利于提升电路静态性能、降低待机功耗。

四、典型应用场景

  • 小信号放大器与电平转换电路(需要 PNP 工作点的差分/推挽结构)。
  • 高电压开关/保护电路的低电流驱动(如高压偏置断路、欠压/过压保护辅助电路)。
  • 移动设备、便携仪器及消费电子中的空间受限开关或补偿电路。
  • 需要低漏电和低饱和压的电源管理、复位或电平检测模块。
  • 高频脉冲或中频信号的开关应用(fT ≈ 100 MHz,注意功耗和温升限制)。

五、封装与热管理

  • 封装:SOT-523,极为紧凑,适合高密度贴片布局。
  • 热耗散:Pd = 200 mW(0.2 W),属于较低功率等级。由于封装体积小,热阻较大,连续大电流工作(接近 Ic 最大值 600 mA)会导致显著温升,必须严格考虑热裕量与散热条件。建议在持续工作或较高集电极电压下进行功耗计算并限制平均功率,必要时采用降额设计或改用更大封装。
  • 温度范围:器件能在 -55 ℃ 至 +150 ℃ 环境下工作,但功率耗散应随结温上升进行降额,具体降额曲线请参照完整数据手册。

六、设计建议与注意事项

  • 切勿使基极-发射极反向电压超过 Vebo = 5 V,以免损坏结结构。
  • 尽管 Ic 额定为 600 mA,但在 SOT-523 等小封装上应避免长时间满载通流;推荐以脉冲或短时高电流方式使用,并关注结温。
  • 在高压应用中注意电气间隙、邻近器件耐压与 PCB 布局,防止击穿或爬电。
  • VCE(sat) 与 hFE 均受工作点与温度影响,设计时以典型工作电流区间作校核,并在关键场合留足裕量。
  • 参考完整数据手册确认引脚排列、最大瞬时参数与热阻等关键细目,进行仿真与样机验证。

七、订购信息

  • 品牌:TECH PUBLIC(台舟电子)
  • 型号:MMBT5401T
  • 封装:SOT-523
  • 数量:1 件(单件供应)
  • 描述分类:未分类(建议询问供应商或查看产品数据表以获取更详细分类与合规性信息)

结语:MMBT5401T 在高耐压与微小封装之间取得了平衡,适用于对体积和耐压有要求但平均功耗有限的应用场景。选型时请综合考虑热管理与工作周期,必要时参考厂商的完整数据手册与应用说明进行详细验证。

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