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CJ BC847T
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ BC847T
- Type
- CJ
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- BC847T
- Electronic Component
- 1
- Package
- SOT-523
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.03g
- Electronic Component
- 1
- Electronic Component
- BM0227365940
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN
- Frequency(f T)
- 100MHz
- Power Dissipation(Pd)
- 150mW
- 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.
BC847T 1E (SOT-523) 产品概述
一、概述
BC847T 1E 是 CJ（江苏长电/长晶）生产的一款小型 NPN 晶体管，采用超小封装 SOT-523，面向通用小信号放大与开关场合。器件在低电流区具有良好的直流电流增益 (hFE≈110 @ Ic=2mA, Vce=5V)，工作温度范围宽（-55℃ ~ +150℃），适合空间受限和对温度稳定性有要求的应用。
二、主要参数与特性
- 晶体管类型：NPN
- 直流电流增益 hFE：110 @ Ic=2mA, Vce=5V
- 最大集电极电流 Ic：100mA（注意Pd与热限制）
- 集电极-发射极击穿电压 Vceo：45V
- 发射极-基极击穿电压 Vebo：6V
- 集电极截止电流 Icbo：15nA（典型弱漏电表现）
- 集电极-发射极饱和电压 VCE(sat)：约700mV（在指定偏流下）
- 特征频率 fT：≈100MHz，适合中频小信号放大
- 功耗 Pd：150mW（在良好散热条件下使用）
- 封装：SOT-523（超小型表贴）
三、应用场景
- 小信号放大器：音频前级、传感器信号放大等低功耗场合。
- 通用开关：驱动小负载或作为逻辑电平的开关元件（注意饱和电压）。
- 高频放大与缓冲：fT≈100MHz，适合中等频段信号处理。
- 移动与便携设备：由于封装体积小、适合高密度 PCB 布局。
四、封装与热管理
SOT-523 封装体积极小，适合高密度布线，但散热能力受限。器件最大耗散功率仅 150mW（无散热板时），在实际设计中需考虑：
- 限制集电极电流与电压，避免接近最大功耗。
- PCB 走铜和焊盘面积对散热影响显著，可在芯片附近增加铜箔或热通孔以改善散热。
- 在高环境温度或连续功率工作时，应评估结温，避免超过 +150℃。
五、使用建议与注意事项
- 在设计偏置时，以 Ic 在安全范围内（如数 mA 至数十 mA）获得稳定 hFE。
- 对于开关应用，考虑 VCE(sat)≈700mV 在饱和时的压降，必要时并用驱动级以降低功耗。
- 芯片极小，贴装与返修需使用细尖 nozzle 和精确回流焊工艺，避免过热和机械应力。
- 引脚排列与焊盘定义请以厂家完整数据手册为准，封装极小且引脚方向敏感。
- ESD 防护：器件敏感，建议在生产与测试过程中采取静电防护措施。
六、订购与质量
BC847T 1E 由 CJ（江苏长电/长晶）提供，SOT-523 小封装便于批量贴装。购买时注意料号、包装形式（卷盘等）与批次一致性，并参考厂家数据手册和可靠性试验报告，确保符合目标应用的温度与寿命要求。
总结：BC847T 1E 在体积极小的封装下提供了良好的低电流增益、适中的频率响应与较高的击穿电压，适合便携、空间受限的通用小信号放大与开关应用。使用时需重点关注功耗限值与 PCB 散热设计。
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