WMSIC Electronic Components

CJ(江苏长电/长晶) BC817-40

CJ(江苏长电/长晶) BC817-40
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Product image

ModelBC817-40
PackageSOT-23(SOT-23-3)
BrandCJ
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 26+

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Technical data

Product details

13 specifications

Core information

Product name
CJ BC817-40
Type
CJ
Minimum package
3000 卷

Technical parameters

Electronic Component
CJ
Electronic Component
BC817-40
Electronic Component
1
Package
SOT-23(SOT-23-3)
Electronic Component
Transistor(BJT)
Electronic Component
0g
Electronic Component
1
Electronic Component
BM0221716486
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.

BC817-40 产品概述

一、基本信息

  • 品牌: CJ（江苏长电/长晶）
  • 封装: SOT-23 (SOT-23-3)
  • 产品类型: NPN低功耗晶体管

二、产品背景

BC817-40 是一种广泛应用于低功耗电路中的NPN晶体管，特别是在信号放大与开关电路中表现优异。作为一种小封装的元件，BC817-40 可以有效减少设备的体积，符合现代电子产品对小型化和轻量化的需求。

三、主要特性

  1. 低功耗: BC817-40 采用NPN结构，具有优异的电流放大能力，能够在较低的输入电流下控制更大的输出电流，非常适合用于低功耗应用。

  2. 高增益: 通常情况下，BC817-40 的直流电流增益（hFE）可以达到100-800，具体数值因工作条件而异。这使得它在信号放大方面有着广泛的应用范围。

  3. 宽工作电压范围: BC817-40 可以在较宽的电压范围内工作，通常可承受的最大集电极-发射极电压（VCE）为45V。适合各种低到中等电压的应用场景。

  4. 小型封装: SOT-23 封装仅占用很小的PCB空间，而其三引脚设计简化了焊接和布局，对于追求高密度电路设计的工程师尤为重要。

  5. 温度范围: 该器件的工作温度范围通常在 -55°C 到 +150°C，适应各种环境条件下的使用，具有良好的稳定性和可靠性。

四、应用领域

BC817-40 的应用非常广泛，主要包括但不限于以下几个方面：

  1. 信号处理: 由于其优异的增益特性，BC817-40 常用于音频信号放大及其他低频信号处理电路。例如，音响设备、无线电接收机和其他音频设备。

  2. 开关电路: 在开关控制应用中，BC817-40 可控制较大的负载电流，比如继电器和小型电机。当微控制器或其他逻辑电路输出的控制信号较弱时，可以通过BC817-40来提升此信号，以驱动需要的负载。

  3. LED驱动: BC817-40 可以用于LED的驱动电路，控制LED的开关与亮度调节，广泛应用于背光源、指示灯等。

  4. 传感器接口: 在各种传感器的应用中，BC817-40 可用作信号调理，减少传感器输出的噪声并增强信号强度，使其更适合后续的数字处理。

五、关键参数

参数值
VCE(max)45V
IC(max)800mA
Ptot500mW
hFE100-800 (在不同工作条件下)
封装SOT-23
温度范围-55°C to +150°C

六、总结

BC817-40 是一种性能优越、应用广泛的NPN低功耗晶体管，凭借其良好的电流放大特性、低功耗、宽电压范围及小型化设计，成为许多电子产品中的重要组成部分。对电子工程师而言，选择合适的晶体管至关重要，而BC817-40则提供了一种可靠且经济的选择。无论是用于信号放大、开关控制，还是作为LED驱动，BC817-40 都能够高效地满足各种应用需求。

在设计实际应用时，工程师需要根据具体的电路特性、负载要求、散热管理以及对电路稳定性的考虑来选择和使用BC817-40，以确保电路的最佳性能和可靠性。

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