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FOSAN MMBTA44
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FOSAN MMBTA44
- Type
- FOSAN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FOSAN
- Electronic Component
- MMBTA44
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.035g
- Electronic Component
- 1
- Electronic Component
- BM0264881613
- Operating Temperature
- 55℃~+125℃
- Transistor Type
- NPN
- Frequency(f T)
- 50MHz
- Power Dissipation(Pd)
- 225mW
- 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.
MMBTA44（SOT-23）产品概述
一、产品简介
MMBTA44 是一款高压小功率NPN晶体管，采用SOT-23封装，适合空间受限的高压开关与小信号放大场合。器件在保证高耐压特性的同时具有较高的直流电流增益，适用于需要在有限散热条件下处理中小电流、高电压信号的电路。
二、主要技术参数
- 晶体管类型：NPN（BJT）
- 集电极电流 Ic：200 mA（最大）
- 集-射击穿电压 Vceo：400 V
- 耗散功率 Pd：225 mW（SOT-23封装条件下）
- 直流电流增益 hFE：300（典型，低电流区表现优良）
- 特征频率 fT：50 MHz
- 集电极截止电流 Icbo：500 nA（典型小泄漏）
- 集射极饱和电压 VCE(sat)：500 mV（典型）
- 工作温度范围：-55 ℃ ～ +125 ℃
- 射基极击穿电压 Vebo：7 V
- 包装与数量：SOT-23 封装，按需供应单片或卷带
三、器件特性与优势
- 高耐压：Vceo 400 V，适合高压开关、保护与隔离电路。
- 高增益：hFE ≈ 300，在低至中等电流范围可实现良好放大倍数，便于偏置设计。
- 低泄漏：Icbo 约 500 nA，有利于高阻电路的稳定性与低功耗应用。
- 中等频率响应：fT 50 MHz，可满足音频到中频带宽的放大和开关需求。
- 小封装优势：SOT-23 占板面积小，适合便携与密集布板。
四、典型应用场景
- 高压开关与限流电路（小电流场合）
- 小信号放大、前置放大器与电平转换
- 线性与脉冲驱动（受限于Pd和SOA）
- 保护电路、钳位与检测电路
- 便携设备与测量仪器中的高压小电流路径
五、封装与引脚建议
器件采用SOT-23封装，引脚功能为基极、集电极、射极三端。不同厂商引脚排列可能略有差异，推荐在设计与焊接前确认厂商原厂数据手册和封装图。SOT-23 封装散热受限，器件功耗与温升需特别关注。
六、PCB 布局与散热建议
- 扩大集电极附近铜箔面积并加热孔（via）以提高散热能力。
- 集、射、基引线尽量缩短，减少寄生电感与电阻，提升开关性能。
- 在高压路径保持足够爬电距离与绝缘间隙，避免表面漏电。
- 按温度降额使用，接近额定温度时适当降低工作电流与占空比。
七、使用与保护注意事项
- 基极—射极反向击穿电压 Vebo 为 7 V，禁止超过该反向电压以免损伤基区。
- 对感性负载使用反向二极管或缓冲网络，避免大反向瞬态超过SOA。
- 注意静电防护（ESD），推荐佩戴防静电手环并在湿度合适环境下操作。
- 在高压应用中确认漏电与绝缘要求，必要时添加外部保护器件（如TVS、限流电阻）。
总结：MMBTA44 在SOT-23小封装中提供了高耐压与高增益的组合，适合高压小电流的开关与信号处理应用。设计时需重视封装散热与基极反向耐压限制，参考厂商完整数据手册以获得准确的引脚定义与典型测试条件。
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