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CJ CJ2045
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ CJ2045
- Type
- CJ
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- CJ2045
- Electronic Component
- 1
- Package
- SOT-23-6L
- Electronic Component
- 1 NPN+1 PNP
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.051g
- Electronic Component
- 1
- Electronic Component
- BM0228151795
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN+PNP
- Power Dissipation(Pd)
- 350mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Collector Current(Ic)
- 1.5A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CJ2045 双极型晶体管（BJT）产品概述
一、产品简介
CJ2045 是由 CJ（江苏长电/长晶）推出的一款双晶体管器件，内含 1 个 NPN 与 1 个 PNP，封装为 SOT-23-6L。该器件针对低电压、中等电流应用设计，适合小信号放大与开关、互补推挽级和便携式电源管理等场景。
二、主要电气参数
- 直流电流增益 hFE：180（条件 100mA、VCE≈2V）
- 集电极电流 Ic 最大值：1.5A
- 集电极-发射极击穿电压 Vceo：30V
- 集电极截止电流 Icbo：20nA（低漏电）
- 发射-基极击穿电压 Vebo：7V
- 集电极-发射极饱和电压 VCE(sat)：约 375mV（典型）
- 耗散功率 Pd：350mW（封装热限）
- 工作温度范围：-55℃ ～ +150℃
三、特性亮点
- 双极性互补配对，便于实现对称推挽与电流镜电路。
- 在 100mA 工作点仍保持较高 hFE（约 180），便于低驱动电流下获得较大输出能力。
- 极低的 Icbo（20nA）适合对漏电要求高的电路，如电池供电设备。
- 中等 VCE(sat)（~375mV）在开关应用中降低功耗与发热。
四、典型应用
- 小功率音频放大器的互补输出级
- 便携式与电池供电装置中的电平转换与开关负载
- 低压电机驱动与继电器驱动（注意峰值电流限制）
- 电源管理、偏置电路与电流镜
五、使用注意与推荐设计实践
- 遵守 Ic ≤ 1.5A 与 Pd ≤ 350mW 的绝对极限，需考虑环境温度和 PCB 散热铜箔进行功率热量管理与降额设计。
- Vebo=7V，避免对基极施加过高反向电压以防击穿。
- 对开关快速转换场合建议增加适当基极限流和阻尼，防止振铃与过冲。
- SOT-23-6L 封装体积小，布局时宜增大散热铜箔并缩短走线以降低寄生阻抗。
六、订购信息与包装
型号：CJ2045；品牌：CJ（江苏长电/长晶）；封装：SOT-23-6L。适合批量采购与表面贴装生产线使用。购买前建议索取详细数据手册以确认引脚与测试条件。
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