BC817-40

Product Overview

Category: Transistor
Use: Amplification and switching in electronic circuits
Characteristics: Small signal NPN transistor, low power dissipation, high current gain
Package: SOT-23
Essence: Reliable and versatile small-signal transistor
Packaging/Quantity: Available in reels of 3000 units

Specifications

Collector-Emitter Voltage (VCEO): 45V
Collector-Base Voltage (VCBO): 50V
Emitter-Base Voltage (VEBO): 5V
Continuous Collector Current (IC): 500mA
Power Dissipation (Ptot): 625mW
Transition Frequency (ft): 100MHz
Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The BC817-40 transistor has three pins: the emitter (E), base (B), and collector (C). In the SOT-23 package, the pin configuration is as follows: - Emitter (E) - Pin 1 - Base (B) - Pin 2 - Collector (C) - Pin 3

Functional Features

High current gain
Low power dissipation
Fast switching speed
Small footprint
RoHS compliant

Advantages and Disadvantages

Advantages: - Versatile for use in various electronic circuits - Small and compact package - High current gain allows for amplification of weak signals

Disadvantages: - Limited maximum voltage and current ratings - Sensitive to overvoltage conditions

Working Principles

The BC817-40 operates as a small-signal NPN transistor. When a small current flows into the base terminal, it controls a much larger current flowing between the collector and emitter terminals. This property makes it suitable for amplification and switching applications in electronic circuits.

Detailed Application Field Plans

The BC817-40 is commonly used in audio amplifiers, signal processing circuits, and general-purpose switching applications. Its small size and high current gain make it ideal for portable and battery-operated devices.

Detailed and Complete Alternative Models

BC817-25
BC817-16
BC846A

In conclusion, the BC817-40 is a reliable and versatile small-signal transistor with high current gain and low power dissipation, making it suitable for a wide range of amplification and switching applications in electronic circuits.

Word Count: 311

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací BC817-40 v technických řešeních

What is the maximum collector current of BC817-40?
- The maximum collector current of BC817-40 is 500mA.
What is the maximum power dissipation of BC817-40?
- The maximum power dissipation of BC817-40 is 625mW.
What is the typical hFE (DC current gain) of BC817-40?
- The typical hFE of BC817-40 is 250-600 at a collector current of 100mA.
What are the typical Vce(sat) and Vbe(sat) values for BC817-40?
- The typical Vce(sat) is 250mV and the typical Vbe(sat) is 900mV at a collector current of 100mA.
What are the recommended operating and storage temperatures for BC817-40?
- The recommended operating temperature range is -55°C to +150°C, and the storage temperature range is -65°C to +150°C.
Is BC817-40 suitable for switching applications?
- Yes, BC817-40 is suitable for switching applications due to its high current gain and low saturation voltage.
Can BC817-40 be used in audio amplifier circuits?
- Yes, BC817-40 can be used in audio amplifier circuits, especially in low-power applications.
What are the package options available for BC817-40?
- BC817-40 is available in SOT-23 and SOT-416 packages.
Does BC817-40 require external biasing components?
- BC817-40 does not require external biasing components, making it convenient for many circuit designs.
Are there any common failure modes or reliability concerns with BC817-40?
- Common failure modes include thermal runaway at high currents, so proper heat sinking and current limiting should be considered in the design. Additionally, like all electronic components, proper ESD handling is important to ensure reliability.