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BLUE ROCKET BC547-B
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BLUE ROCKET BC547-B
- Type
- BLUE ROCKET
- Minimum package
- 3000 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BLUE ROCKET
- Electronic Component
- BC547-B
- Electronic Component
- 1
- Package
- TO-92-3
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.29g
- Electronic Component
- 1
- Electronic Component
- BM0232343573
- Transistor Type
- NPN
- Frequency(f T)
- 150MHz
- Power Dissipation(Pd)
- 625mW
- 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.
BC547-B 产品概述
BC547-B（品牌：BLUE ROCKET）是一款常用的通用型NPN小信号晶体管，适用于低功耗放大与开关场合。器件封装为TO-92-3，具有较高的直流电流增益和较低的漏电流，适合音频前级、小信号放大及逻辑驱动等应用。
一、主要电气参数（关键信息）
- 晶体管类型：NPN
- 最大集电极电流 Ic：100 mA
- 集-射极击穿电压 Vceo：45 V
- 耗散功率 Pd：625 mW（典型值，参照厂商额定条件）
- 直流电流增益 hFE：200 @ Ic=2 mA, Vce=5 V（B级）
- 特征频率 fT：150 MHz（高频性能良好）
- 集电极截止电流 Icbo：15 nA（漏电流小）
- 集射极饱和电压 VCE(sat)：约600 mV @ Ic=100 mA, Ib=5 mA
二、典型应用场景
- 小信号放大：音频前置放大、电压放大器、传感器信号放大。
- 低功耗开关：驱动小继电器、LED、光电耦合器或作为逻辑电平转换开关（注意电流与功耗限制）。
- 高频小信号处理：凭借约150 MHz的fT，可用于几十MHz以内的高频放大与缓冲。
三、使用建议与注意事项
- 功耗控制：Pd为625 mW，实际应用须考虑环境温度并做降额处理。在TO-92小封装中，长时间接近Pd容易过热，建议在设计中保证实际耗散远小于额定值。
- 饱和与驱动：当用于开关且驱动至100 mA时，VCE(sat)可达约600 mV，开关损耗显著，应保证基极驱动电流充足（例如 Ib≈5–10% Ic）。
- 增益变化：hFE随Ic和温度变化较大，设计偏置电路时应考虑最差增益情况，必要时使用负反馈或恒流电路稳定工作点。
- 泄漏与漂移：Icbo低（≈15 nA），适合高阻输入场合，但在高温下漏电流仍会上升，应在高温环境下验证。
四、封装与引脚
- 封装：TO-92-3，适合通孔焊接与手工面包板实验。
- 常见引脚排列（面对平面一侧，从左到右）：E – B – C（不同厂家可能有所差异，使用前请核对数据手册）。
五、选型与替代建议
- 若电流或功耗需求更高，可考虑BC337/2N2222等更高Ic/Pd的型号。
- 若需要更高电压耐受，可参考BC546/BC547 系列的高压版本。
- 对于对饱和电压或开关损耗敏感的应用，可选择低饱和压（Low VCE(sat)）的开关管或采用达林顿/场效应管替代。
六、结论
BLUE ROCKET 的BC547-B是一款稳定、通用的小信号NPN晶体管，适合教学、原型开发及民用电子产品中的放大与低功率开关任务。设计时重点关注功耗与热管理、基极驱动与增益容差，以确保长期可靠工作。如需在苛刻电流/温度条件下使用，建议参考器件完整数据手册并选择更适合的替代型号。
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