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FUXINSEMI FMMT493
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FUXINSEMI FMMT493
- Type
- FUXINSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FUXINSEMI
- Electronic Component
- FMMT493
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.034g
- Electronic Component
- 1
- Electronic Component
- BM0264480222
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN
- Frequency(f T)
- 150MHz
- Power Dissipation(Pd)
- 250mW
- 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.
FMMT493 产品概述
一、产品简介
FMMT493 是富芯森美（FUXINSEMI）推出的一款小功率高压 NPN 双极晶体管，采用 SOT-23 小封装设计。该器件具有最高 100V 的集电极—发射极击穿电压、1A 的集电极电流能力和典型 250mW 的耗散功率，适合在空间受限且需承受中等电压的射频/开关与放大电路中使用。
二、主要电气参数
- 晶体管类型：NPN
- 集电极电流 Ic：1A（最大）
- 集射极击穿电压 Vceo：100V
- 耗散功率 Pd：250mW（请参考温度降额曲线）
- 直流电流增益 hFE：100（典型）
- 特征频率 fT：150MHz（可用于高频小信号放大）
- 集电极截止电流 Icbo：100nA（典型，低漏电）
- 集射极饱和电压 VCE(sat)：600mV（在指定驱动条件下）
- 射基极击穿电压 Vebo：5V
- 工作温度范围：-55℃ ~ +150℃
- 封装：SOT-23；数量：1 个/片
三、性能特点与优势
- 高压耐受：100V 的 Vceo 使其能在汽车、工业与通信电源侧边缘电路中承受较高电压应力。
- 高频性能良好：150MHz 的 fT 为宽带小信号放大和快速开关提供支持。
- 低漏电流：Icbo 值小，便于在高阻抗偏置电路中保持稳定。
- 小型封装：SOT-23 便于表贴组装，适合体积受限的应用板卡。
四、典型应用场景
- 小信号放大器与射频前端放大（中低功率段）
- 通用开关与驱动电路（继电器驱动、LED 驱动前级）
- 电源管理与保护电路（中压检测、过压保护前端）
- 汽车电子与工业控制中要求高压耐受的小型晶体管方案
五、使用与设计建议
- 功耗管理：SOT-23 封装的 250mW 功耗在实际设计中需要根据环境温度和 PCB 导热条件进行降额；建议参考厂方热阻与降额曲线，增加铜箔散热或铺铜以提升功耗承载能力。
- 饱和驱动：若作为开关使用，为保证低 VCE(sat)，应提供足够的基极驱动电流（常见经验值可按 Ic/10 估算基极电流，具体以电路要求为准）。
- 封装与引脚：SOT-23 的引脚排列在不同厂商型号中可能存在差异，安装前务必核对官方数据手册的引脚定义与封装尺寸。
- ESD 与焊接：为防止静电及热应力损伤，做好静电防护并按推荐回流曲线进行焊接。
六、可靠性与选型注意
在要求长寿命或高功率工作条件下，应考虑器件的热降额与 SOA（安全工作区）限制；若工作电流接近 1A 或频繁处于导通，建议选用更高功耗或更大封装的器件，或采用并联/外部散热措施。购买与库存时请确认品牌、批次与完整数据手册，以保障性能一致性。
总结：FMMT493 以其 100V 耐压、良好 hFE 与 150MHz 的特征频率，在小型封装中为高压小信号放大和一般开关应用提供了平衡的性能，是空间受限电路板上一款通用性较强的 NPN 器件。购买与设计应用时请以官方数据手册为准。
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