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DOWO MMBT5401
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO MMBT5401
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- MMBT5401
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 PNP
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.033g
- Electronic Component
- 1
- Electronic Component
- BM0257247598
- Transistor Type
- PNP
- Frequency(f T)
- 100MHz
- Power Dissipation(Pd)
- 300mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Collector Current(Ic)
- 600mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMBT5401（DOWO/东沃）产品概述
一、产品简介
MMBT5401 为PNP型小功率高压晶体管，采用SOT-23封装，适用于空间受限的表面贴装电路。器件具有较高的集电极击穿电压与适中的工作频率，兼顾高压耐受与开关／放大应用，常作为高压侧开关、反相放大与电平移位电路的选择元件。
二、主要参数
- 晶体管类型：PNP
- 最大集电极电流 Ic：600 mA（使用时应考虑封装及热限制）
- 集电极—发射极击穿电压 Vceo：150 V
- 耗散功率 Pd：300 mW（SOT-23封装）
- 特征频率 fT：100 MHz（适合低功率高频应用）
- 集电极截止电流 Icbo：100 nA（典型低漏电）
- 集射极饱和电压 VCE(sat)：约 0.5 V（在 Ic=50 mA、5 mA 条件下测得）
- 发射极—基极反向击穿 Vebo：5 V
- 品牌：DOWO（东沃）
- 封装：SOT-23
三、性能特点
- 高压能力：Vceo 达 150 V，可在较高电压场合作高侧开关或电平移位器件。
- 低功耗封装：SOT-23 与 300 mW 耗散功率适合小信号与中小电流场合，但不宜长时间大电流工作。
- 较高频率响应：fT ≈ 100 MHz，能满足一般射频前端的低功率放大或高速开关需求。
- 低漏电流：Icbo ≈ 100 nA，有利于提高静态性能与降低偏置损耗。
- 饱和电压适中：VCE(sat) ≈ 0.5 V，在开关应用中需考虑功耗与电压降。
四、典型应用场景
- 高压侧开关与反向控制电路（如电池管理、反极性保护）。
- 小功率放大器与电平移位器，适用于音频级与逻辑接口电路。
- 高频脉冲开关、驱动小继电器或LED（受限于封装热量与VCE(sat)）。
- 通用电路中作为电流镜、偏置网络的PNP元件。
五、使用建议与注意事项
- 热管理：Pd 仅 300 mW，若长期大电流（接近 Ic 规格）会导致过热，应在PCB上增加散热铜箔或热 vias，或减小占空比。
- 饱和驱动：为确保饱和导通，建议在开关应用中采用较低的强迫β（如 10–20），据此计算基极限流电阻。
- 反向基极电压限制：Vebo = 5 V，避免在电路中对基极施加过高反向电压以防损坏。
- 漏电考量：Icbo 虽小，但在高温下可能增大，需在高温环境验证静态性能。
- 封装限制：SOT-23 的引脚间距和散热能力有限，设计时需兼顾布线与焊接工艺。
六、封装与采购信息
MMBT5401 由 DOWO（东沃）生产，SOT-23 小型封装利于自动化贴装与高密度布板。适合批量采购用于消费电子、仪表与通信终端等小型化产品。购买或设计导入前建议索取器件详细数据手册，核对实验条件下的典型曲线与极限值，以确保电路长期可靠运行。
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