WMSIC Electronic Components

CBI MMBT3904W

ModelMMBT3904W
PackageSOT-323
BrandCBI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CBI MMBT3904W
Type
CBI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CBI
Electronic Component
MMBT3904W
Electronic Component
1
Package
SOT-323
Electronic Component
1 NPN
Electronic Component
Transistor(BJT)
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0221161404
Transistor Type
NPN
Frequency(f T)
300MHz
Power Dissipation(Pd)
200mW
Electronic Component
Electronic Component
Electronic Component
3000
Collector Current(Ic)
200mA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

MMBT3904W产品概述

1. 概述

MMBT3904W 是一种广泛应用于电子电路中的小信号NPN型三极管,属于BJT(双极晶体管)类别。作为一种关键的基础电子元件,MMBT3904W在信号放大、开关控制及数字逻辑电路中具有不可或缺的作用。该器件尤其适合于需要高频率操作与高增益的应用场景。

2. 主要特性

  • 电流增益 (hFE): 在特定的工作条件下(10mA、1V时),该三极管表现出良好的电流增益,通常高达100以上。这使其在小信号放大中非常有效,可以显著提高输入信号的强度。
  • 功耗: MMBT3904W的最大功耗为200mW,这意味着在合理的工作条件下,它能有效管理其发热,并保持稳定的性能。这使得该元器件非常适合中低功耗的电路应用。
  • 电压和电流规格: 该三极管的最大集电极-发射极电压(Vce)为40V,最大集电极持续电流(Ic)为200mA。这样的电压和电流等级使其适合于各种电压电路,即使在一些相对较高电压的应用场景中,也能确保其安全运行。
  • 封装: MMBT3904W采用SOT-323-3小封装。该封装占用空间小,适合于紧凑的电路设计,尤其是在移动设备和小型电子产品中具有明显优势。SOT-323-3的尺寸设计有效提高PCB布局的密度,并确保良好的散热性能。

3. 应用场景

MMBT3904W三极管具有广泛的应用场景,包括但不限于以下几个领域:

  • 信号放大:由于其优良的增益特性,MMBT3904W能够有效放大来自传感器或其它微弱信号源的信号,从而使其适用于音频放大器、传感器放大和RF(射频)应用。
  • 开关电路:在数字电路中,MMBT3904W可以用作电子开关,其有效的开关速度和稳定的开关特性,使其非常适合用于控制电源、LED灯等。
  • 振荡器和放大器设计:它也常用于构建振荡器及RF电路,特别是在需要高频率响应的应用中,MMBT3904W的工作性能尤为突出。
  • 小型化电子产品:由于其小封装及良好的散热能力,MMBT3904W非常适合于对尺寸要求严格的手机、平板电脑以及其他便携式设备的电路设计。

4. 选择与处理注意事项

在选择MMBT3904W时,设计工程师需注意以下几点:

  • 工作条件: 确保工作电流和电压在其最大等级以下,以避免元件损坏。应始终参考其数据手册,以便了解具体的工作条件和安全参数。
  • 热管理: 尽管该元件在设计中有良好的散热特性,但在高频和高功耗的应用环境中,合理的热管理和散热设计仍然不可忽视,以防止过热引起的性能下降。
  • 兼容性: 在设计与MMBT3904W配合使用的电路时,要确保其与其他电子元件(如电阻、电容等)之间的兼容性,以实现最佳的电路性能。

5. 结论

MMBT3904W是一款性能优越、适用范围广泛的小信号NPN三极管,其出色的电流增益、功耗管理以及小型封装,使其成为众多现代电子设备中不可或缺的重要组件。凭借其优良的电气特性,MMBT3904W将在电子设计领域继续发挥重要作用,帮助实现更多高效、紧凑且创新的电子解决方案。

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