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DIOTEC BC846B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DIOTEC BC846B
- Type
- DIOTEC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DIOTEC
- Electronic Component
- BC846B
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.027g
- Electronic Component
- 1
- Electronic Component
- BM0264583319
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN
- Frequency(f T)
- 300MHz
- 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.
BC846B 产品概述
一、产品简介
BC846B 为一款通用 NPN 小信号双极晶体管，DIOTEC（德欧泰克）品牌，采用 3 引脚 SOT-23 封装，适用于小功率放大与开关场合。该器件在保证高电流增益的同时具备较高的集电极-发射极击穿电压和较低的漏电流，适合对增益和耐压有要求的消费电子、仪表及通信前端电路。
二、主要电气参数
- 晶体管类型：NPN
- 集电极电流 Ic：100 mA
- 集射极击穿电压 Vceo：65 V
- 耗散功率 Pd（封装限值）：250 mW
- 直流电流增益 hFE：典型 200
- 特征频率 fT：300 MHz
- 集电极截止电流 Icbo：15 nA
- 集射极饱和电压 VCE(sat)：约 600 mV
- 射基极击穿电压 Vebo：6 V
- 工作温度范围：-55 ℃ 至 +150 ℃
- 封装：SOT-23，3 引脚
三、主要特点与优势
- 高增益：hFE ≈200，便于在小基极电流下获得较大输出，适合前置放大与增益补偿。
- 耐压性能优良：Vceo=65V，可在较高电压工况下稳定工作，适用于中等电压轨设计。
- 低漏电流：Icbo 仅 15 nA，利于高阻输入电路和低静态功耗场合。
- 高频特性良好：fT 达 300 MHz，可满足 VHF 及部分射频前端的带宽需求。
- 小尺寸封装：SOT-23 封装有利于空间受限的 PCB 布局与自动贴装生产。
四、典型应用场景
- 通用放大器（小信号放大、前置放大）
- 开关驱动与低功耗开关电路
- 信号整形、脉冲放大与缓冲器
- 便携仪表与传感器接口电路
- 部分射频/高频放大应用（在合适偏置下）
五、封装与热管理建议
SOT-23 小封装限制了器件的散热能力，应注意单片耗散 Pd（250 mW）在实际应用中受 PCB 铜箔、焊盘面积及环境温度影响。建议在设计 PCB 时增大焊盘面积、采用散热铜箔并避免长时间在额定功耗上工作。对于开关应用，应在基极串联限流电阻以控制基极电流，同时保证 Veb 不超过 6 V，防止射-基击穿。
六、选型与采购建议
在选型时，确认工作电流、耐压与频率需求与本器件参数匹配。若工作电流接近或超过 100 mA、或长期高功耗环境，应考虑更大封装或功耗等级的器件。采购时可按“DIOTEC BC846B SOT-23”型号下单，常见为散装/盘装（T/R）供货；本条目数量为 1 个 NPN。使用前请参照厂商完整数据手册以获取典型测试条件与温度特性曲线。
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