71321SA20TF

Basic Information Overview

• Category: Electronic Component
• Use: Signal Amplification
• Characteristics: High Gain, Low Noise
• Package: Surface Mount Technology (SMT)
• Essence: Transistor
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Type: NPN Bipolar Junction Transistor
• Maximum Collector Current: 100mA
• Maximum Collector-Emitter Voltage: 30V
• Maximum Power Dissipation: 200mW
• Transition Frequency: 250MHz
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The 71321SA20TF transistor has a three-pin configuration:

1. Base (B): Controls the flow of current through the transistor.
2. Emitter (E): Emits the majority charge carriers (electrons for an NPN transistor).
3. Collector (C): Collects the majority charge carriers and allows current to flow through the transistor.

Functional Features

• High Gain: The 71321SA20TF offers high voltage gain, making it suitable for amplifying weak signals.
• Low Noise: This transistor has low noise characteristics, ensuring minimal interference in signal amplification applications.

Advantages and Disadvantages

Advantages: - High gain allows for effective signal amplification. - Low noise ensures accurate signal reproduction. - Small package size enables compact circuit designs. - Wide operating temperature range allows for versatile applications.

Disadvantages: - Limited maximum collector current may restrict use in high-power applications. - Moderate transition frequency may limit its suitability for high-frequency applications.

Working Principles

The 71321SA20TF operates based on the principles of bipolar junction transistors. When a small current flows into the base terminal, it controls a larger current flowing between the collector and emitter terminals. This amplification effect allows the transistor to amplify weak signals.

Detailed Application Field Plans

The 71321SA20TF is commonly used in various electronic applications, including: 1. Audio Amplifiers: Enhancing audio signals for speakers and headphones. 2. RF Amplifiers: Boosting radio frequency signals in communication systems. 3. Sensor Interfaces: Amplifying signals from sensors for further processing. 4. Oscillators: Generating stable oscillations in electronic circuits.

Detailed and Complete Alternative Models

1. 2N3904: Similar NPN transistor with comparable specifications.
2. BC547: General-purpose NPN transistor suitable for low-power applications.
3. MPSA42: High-voltage NPN transistor with higher power dissipation capability.

(Note: The above list provides only a few alternative models; there are numerous other options available in the market.)

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