KF347 - English Editing Encyclopedia Entry

Product Overview

Category: Electronic Component
Use: Signal Amplification
Characteristics: High Gain, Low Noise
Package: TO-92
Essence: Transistor
Packaging/Quantity: 100 pieces per pack

Specifications

• Maximum Collector Current: 500mA
• Maximum Collector-Emitter Voltage: 30V
• Maximum Power Dissipation: 625mW
• Transition Frequency: 300MHz
• Collector-Base Voltage: 40V
• Emitter-Base Voltage: 6V

Detailed Pin Configuration

The KF347 transistor has three pins:

1. Collector (C)
2. Base (B)
3. Emitter (E)

Functional Features

The KF347 transistor offers the following functional features:

• High gain amplification of weak signals
• Low noise performance for improved signal quality
• Suitable for low-power applications
• Compact TO-92 package for easy integration into circuits

Advantages and Disadvantages

Advantages:

• High gain amplification improves signal strength
• Low noise performance ensures clear signal transmission
• Compact package allows for easy circuit integration

Disadvantages:

• Limited maximum collector current may restrict use in high-power applications
• Lower transition frequency compared to some alternative models

Working Principles

The KF347 transistor operates based on the principles of bipolar junction transistors. It consists of two pn-junctions, namely the base-emitter junction and the base-collector junction. By applying a small input current to the base-emitter junction, the transistor can amplify the input signal at the collector-emitter junction.

Detailed Application Field Plans

The KF347 transistor finds applications in various fields, including:

1. Audio Amplification: Used in audio amplifiers to boost weak audio signals.
2. Radio Frequency (RF) Circuits: Employed in RF circuits to amplify weak radio signals.
3. Sensor Interfaces: Utilized in sensor interfaces to amplify weak sensor signals for further processing.
4. Oscillator Circuits: Incorporated in oscillator circuits to generate stable oscillations.

Detailed and Complete Alternative Models

1. KF348: Similar to KF347 with higher maximum collector current (800mA).
2. KF349: Similar to KF347 with higher transition frequency (500MHz).
3. KF350: Similar to KF347 with higher maximum power dissipation (750mW).

These alternative models offer similar functionality but with specific improvements in certain parameters.

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