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CJ(江苏长电/长晶) MMBT3904
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
14
specifications
Core information
- Product name
- CJ MMBT3904
- Type
- CJ
- Unit
- Electronic Component
- Minimum package
- 3000
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- MMBT3904
- Electronic Component
- 1
- Package
- SOT23
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0g
- Electronic Component
- 1
- Electronic Component
- BM69416874
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMBT3904 产品概述
一、引言
MMBT3904 是一种广泛应用于电子科技领域的 NPN 型三极管，属于 SOT-23 封装，其小巧的体积和出色的性能使其成为各种电路设计中的热门选择。根据现有的规格参数，MMBT3904 具有较高的电压和电流承载能力，适用于多种应用场景，包括但不限于信号放大、开关控制及电源管理等。
二、基本参数
MMBT3904 的主要电气参数如下：
- 类型：NPN，适用于低频放大和开关操作。
- 最大集电极-发射极电压 (Vceo)：40V，表示此三极管在正常工作条件下，能够承受的最大电压，适合大多数中等电压应用。
- 最大集电极电流 (Ic)：200mA，允许的最大集电极电流，对于一般消费电子产品非常合适。
- 直流电流增益 (HFE)：100-300，表示三极管的放大能力，数值越高，说明其输入小信号与输出大信号的增益效果越明显。
三、封装特性
MMBT3904 采用 SOT-23 封装，这是一种小型表面贴装（SMD）封装形式，其尺寸仅为 3mm x 1.6mm x 1.1mm。这种小型化设计使得 MMBT3904 非常适合于空间有限的电子设备中，例如移动设备、手持设备和紧凑型电路板。
四、应用领域
开关电路：MMBT3904 可用作电子开关，在逻辑电路中实现信号的高低控制。这使得该三极管在电源管理、LED 驱动器等领域中得到了广泛应用。
信号放大：由于其良好的增益特性，MMBT3904 常用在低噪声放大器（LNA）设计中，帮助音频信号或射频信号的放大。尤其适合用于处理微弱的信号源，如传感器输出。
振荡器和开关电源：在振荡器电路设计中，MMBT3904 的快速开关特性能够满足高频工作条件，常见于开关电源和脉冲信号处理应用。
线性放大器：在多种线性放大应用中，MMBT3904 也能表现优异，适合用于音频放大及信号处理电路中。
五、工作特性
在使用 MMBT3904 时，需要注意其工作特性，以确保在推荐的参数范围内操作，避免损坏。该器件需要合理的基极电壳电流以驱动集电极电流，且工作环境温度应控制在标准范围内（通常为 -55°C 到 +150°C）。同时，在电路设计中，考虑适当的散热设计和保护电路也十分重要，以确保其长期稳定运行。
六、总结
综上所述，MMBT3904 是一种性能优异、应用广泛的 NPN 型三极管，适合各类电子产品开发。其小型化的 SOT-23 封装、出色的电气特性以及良好的线性表现，使得它在开关、电源管理和信号放大等领域拥有极高的实用价值。无论是在消费电子、工业设备还是通信领域，MMBT3904 都是设计者们常用的元器件之一，凭借其高性价比，确保了产品的稳定性和可靠性。
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