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HXY MOSFET MMBT5551
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HXY MOSFET MMBT5551
- Type
- HXY MOSFET
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HXY MOSFET
- Electronic Component
- MMBT5551
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.043g
- Electronic Component
- 1
- Electronic Component
- BM0227691800
- Transistor Type
- NPN
- Frequency(f T)
- 300MHz
- 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.
MMBT5551 产品概述
一、概述
MMBT5551 是一款高压、小功耗的 NPN 硅小信号三极管，适用于高压开关、放大和保护电路。该器件由华轩阳电子（HXY MOSFET）生产，采用 SOT-23 封装，具有良好的高压耐受能力与宽频响应，适合空间受限且需承受较高集电极电压的应用场合。
二、主要参数
- 晶体管类型：NPN
- 集电极电流 Ic：600 mA（峰值或短时条件下）
- 集-射极击穿电压 Vceo：160 V
- 耗散功率 Pd：300 mW（SOT-23，Ta=25°C）
- 直流电流增益 hFE：300 @ Ic=10 mA, Vce=5 V
- 特征频率 fT：300 MHz
- 集电极截止电流 Icbo：50 nA
- 集电极饱和电压 VCE(sat)：200 mV @ Ic=50 mA, Ib=5 mA
- 发-基击穿电压 Vebo：6 V
（以上参数基于典型测试条件，实际应用应参考完整数据手册并考虑温度与封装热阻影响。）
三、主要特性
- 高电压承受力：160 V 的 Vceo 使其适合高压信号链及保护电路。
- 低饱和压降：VCE(sat) 约 200 mV（在指定偏置下），利于低功耗开关。
- 高频性能良好：fT≈300 MHz，可用于高速信号放大与驱动。
- 低漏电流：Icbo≈50 nA，在高阻抗输入与精密应用中表现稳定。
- 小型封装：SOT-23 节省 PCB 面积，适合便携与密集布局。
四、典型应用
- 高压开关与驱动电路（如继电器驱动、MOSFET 驱动前级）
- 高频小信号放大器与前置放大电路
- 电源保护、过压/过流检测电路
- 信号电平转换与接口驱动（需考虑发-基极反向耐压）
- 消费电子、工业控制、通信终端等场景
五、封装与引脚
- 封装形式：SOT-23，三引脚小外形，适于手工焊接与自动贴装生产。
- 引脚定义（典型，出厂请参照实物标识与数据手册）：
- 引脚 1：基极（B）
- 引脚 2：集电极（C）
- 引脚 3：射极（E）
- 注意：SOT-23 的热阻较大，长时间高功耗工作需在 PCB 上做好散热设计或降额使用。
六、使用建议与注意事项
- 避免发-基极反向击穿（Vebo=6 V），在电路设计中加入限流或钳位措施。
- 集电极电流 600 mA 为短时承受能力，长期工作应注意 Pd 与封装的热极限，必要时并联或选择散热更好的封装。
- 在高频应用中注意引线电感与布局，缩短信号回流路径以保持 fT 性能。
- 推荐在实际应用中参考完整器件数据手册并进行可靠性与温升评估。
七、质量与供应
华轩阳电子（HXY MOSFET）按行业标准生产，推荐在正规渠道采购并索取原厂规格书与检验报告，以确保产品的规格一致性与可靠性。若需替代或配对，请提供具体电路条件以便选型建议。
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