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BLUE ROCKET BC846
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BLUE ROCKET BC846
- Type
- BLUE ROCKET
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BLUE ROCKET
- Electronic Component
- BC846
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.03g
- Electronic Component
- 1
- Electronic Component
- BM0225820702
- Transistor Type
- NPN
- Frequency(f T)
- 300MHz
- Power Dissipation(Pd)
- 350mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Collector Current(Ic)
- 100mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BC846 产品概述（BLUE ROCKET）
一、产品简介
BC846 为一款 SOT-23 封装的 NPN 小信号晶体管（品牌：BLUE ROCKET），面向低功耗、小体积的开关和放大应用。该器件具有高直流电流增益与较低的截止电流，适合在电池供电或空间受限的电路中使用。包封为 SOT-23，便于表面贴装生产与自动化装配。
二、主要电气参数
- 晶体管类型：NPN
- 直流电流增益 (hFE)：450 @ Ic≈2mA, Vce=5V（高增益，适合小信号放大）
- 集电极电流 (Ic)：最大 100mA（短时开关和驱动小负载）
- 集射极击穿电压 (Vceo)：65V（较高的耐压能力）
- 射基极击穿电压 (Vebo)：6V（注意基极-发射极极限）
- 集电极截止电流 (Icbo)：15nA（低漏电，有利于高阻与待机电路）
- 特征频率 (fT)：300MHz（适合高频小信号放大与高速开关）
- 集射极饱和电压 (VCE(sat))：约 600mV @ Ic=100mA, Ib=5mA
- 功耗耗散 (Pd)：350mW（受限的功耗能力，需注意散热）
三、性能亮点及应用建议
- 高 hFE（450@2mA）使其在小电流条件下能获得较大增益，适合低电平信号的前置放大、传感器接口和增益级。
- fT=300MHz 表明器件在高频段仍有较好增益，适合用于宽带放大、射频前端的低功耗级或高速数字信号的驱动与整形。
- Vceo=65V 与 Ic 最大 100mA 的组合允许用于中等电压和中小电流的开关场景，但应避免长时间满载运行以防过热。
- 低 Icbo（15nA）利于低漏电、低功耗设计，适用于待机电流要求严格的便携设备。
应用建议：
- 开关驱动时：确保基极驱动电流充足以满足饱和（参考 VCE(sat) 与 Ib），并在必要时使用限流或保护元件避免击穿。
- 放大电路：在小信号放大器中利用其高 hFE，注意绕开基极反向电压超出 Vebo（6V）。
- 高频用途：合理布局与阻抗匹配以发挥 300MHz 的特性。
四、封装与热管理注意事项
- 封装：SOT-23，适合表面贴装与高密度布板。由于封装体积小，热阻相对较高，器件 Pd=350mW 在无额外散热条件下受限。
- 使用时应关注封装温升与印制板散热路径：增大铜面积或使用热过孔可有效降低结温，延长寿命并保证可靠工作。
- 注意基极-发射极反向保护，避免 E-B 反向电压超过 6V 导致损伤。
五、典型应用场景
- 低电流小信号放大（传感器前置、仪表放大器）
- 通用开关与驱动（继电器小驱动、指示灯驱动）
- 高频/高速数字电路中的缓冲与整形
- 低功耗设备的电源管理与电平转换
总结：BLUE ROCKET 标注的 BC846 在小封装下提供了高增益、低漏电与较好的频率响应，适合多种小信号与中低功率应用。设计时以热管理与电压、电流限值为主，合理偏置与布局可充分发挥其性能。
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