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DIOTEC MMBT4401
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC MMBT4401
- Type
- DIOTEC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- MMBT4401
- Electronic Component
- 1
- Package
- SOT-23-3(TO-236-3)
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.028g
- Electronic Component
- 1
- Electronic Component
- BM0227743802
- 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 产品概述
一、概述
MMBT4401 为 DIOTEC（德欧泰克）出品的一款通用 NPN 小信号晶体管，采用 SOT-23-3（TO-236-3）表面贴装封装。器件设计侧重于小体积、高频性能与可靠的开关/放大能力，适合集成电路外围、信号放大与低功耗开关等应用场景。
二、主要电气参数
- 晶体管类型：NPN
- 集电极电流 Ic：最大 600 mA（脉冲/峰值规范需参考厂家完整数据）
- 直流电流增益 hFE：100（测量条件 150 mA, VCE=1 V）
- 集电极-发射极击穿电压 Vceo：40 V
- 特征频率 fT：250 MHz（适用于高频小信号放大）
- 集电极截止电流 Icbo：100 nA（漏电低）
- 发射结击穿电压 Vebo：6 V
- 集电极-发射极饱和电压 VCE(sat)：典型 750 mV
- 耗散功率 Pd：300 mW（须考虑封装散热限制）
- 工作结温范围：-55 ℃ 至 +150 ℃（Tj）
三、性能特点与优势
- 高频响应好：fT=250 MHz，适用于 VHF 及一般射频前端和宽带放大电路。
- 低漏电流：Icbo=100 nA，有利于低功耗、低偏置漂移的电路设计。
- 中等增益、较高电流能力：hFE=100（在高电流条件下仍有稳定放大能力），并支持较大的集电极电流峰值。
- 小型封装：SOT-23-3 便于表贴自动化焊接和密集 PCB 布局。
四、典型应用
- 通用小信号放大器、前置放大与缓冲级
- 开关驱动（低电压、小功率场合）
- 信号调理、脉冲整形与一级电平转换
- 射频/宽带放大电路的前端或混合放大器
五、使用建议与注意事项
- 虽然 Ic 最大规格为 600 mA，但在 SOT-23 小封装与 Pd=300 mW 限制下，连续工作电流应受热耗散和封装限制影响，建议根据实际 PCB 散热和功耗计算安全工作点，必要时加大散热或降低平均电流。
- VCE(sat) 在重载时接近 750 mV，作为开关器件时需考虑压降带来的功耗。
- 基极驱动应使用限流电阻以防止过流及基极-发射结击穿（Vebo=6 V）。
- 引脚排列与封装尺寸请参照 DIOTEC 官方数据手册和封装图纸以保证焊接与布局正确。
如需进一步的引脚定义、极限参数曲线或典型应用电路图，可提供 DIOTEC 完整数据手册供参考。
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