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PA84A
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PA84A

Product Overview

  • Category: Electronic Component
  • Use: Amplifier Circuit
  • Characteristics: High Gain, Low Noise
  • Package: TO-92
  • Essence: NPN Transistor
  • Packaging/Quantity: Bulk Packaging, 1000 units per pack

Specifications

  • Type: NPN
  • Maximum Collector Current: 500mA
  • Maximum Collector-Emitter Voltage: 40V
  • Maximum Power Dissipation: 625mW
  • Transition Frequency: 300MHz
  • Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The PA84A transistor has three pins:

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

Functional Features

  • High gain amplification
  • Low noise performance
  • Suitable for audio applications
  • Fast switching speed
  • Compact TO-92 package for easy integration

Advantages and Disadvantages

Advantages

  • High amplification capability
  • Low noise output
  • Wide operating temperature range
  • Small form factor for space-constrained designs

Disadvantages

  • Limited maximum collector current
  • Moderate power dissipation capability
  • Not suitable for high-power applications

Working Principles

The PA84A is an NPN transistor that operates as an amplifier in electronic circuits. When a small input signal is applied to the base terminal, it controls the larger current flowing between the collector and emitter terminals. This amplification allows the transistor to boost weak signals and provide higher output levels.

Detailed Application Field Plans

The PA84A transistor finds applications in various fields, including:

  1. Audio amplifiers
  2. Radio frequency (RF) circuits
  3. Signal processing systems
  4. Communication devices
  5. Oscillator circuits

Detailed and Complete Alternative Models

  1. BC547 - NPN Transistor
  2. 2N3904 - NPN Transistor
  3. PN2222 - NPN Transistor
  4. MPSA18 - NPN Darlington Transistor
  5. C945 - NPN Transistor

These alternative models offer similar characteristics and can be used as substitutes for the PA84A transistor in various applications.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av PA84A i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of PA84A in technical solutions:

  1. Q: What is PA84A? A: PA84A is a type of thermoplastic polyamide material commonly used in technical applications due to its high strength, durability, and chemical resistance.

  2. Q: What are the key properties of PA84A? A: PA84A exhibits excellent mechanical properties, including high tensile strength, impact resistance, and dimensional stability. It also has good resistance to chemicals, oils, and solvents.

  3. Q: In which industries is PA84A commonly used? A: PA84A finds applications in various industries such as automotive, aerospace, electrical and electronics, industrial machinery, and consumer goods.

  4. Q: What are some typical applications of PA84A in technical solutions? A: PA84A is often used for manufacturing components like gears, bearings, bushings, connectors, housings, and structural parts in technical solutions.

  5. Q: Can PA84A be easily machined or molded into complex shapes? A: Yes, PA84A can be easily machined using conventional methods like milling, turning, and drilling. It can also be injection molded into complex shapes with high precision.

  6. Q: Is PA84A suitable for outdoor applications? A: Yes, PA84A is known for its excellent weatherability and UV resistance, making it suitable for outdoor applications where exposure to sunlight and harsh environmental conditions is expected.

  7. Q: Does PA84A have any limitations or considerations for use? A: While PA84A offers many advantages, it has a relatively high moisture absorption rate, so it may require proper drying before processing. It is also important to consider its thermal expansion and design accordingly.

  8. Q: Can PA84A be reinforced with other materials? A: Yes, PA84A can be reinforced with various additives like glass fibers, minerals, or carbon fibers to enhance specific properties such as stiffness, strength, and heat resistance.

  9. Q: What are the temperature limits for PA84A in technical applications? A: PA84A typically has a high-temperature resistance, with continuous use temperatures ranging from around 100°C (212°F) to 150°C (302°F), depending on the specific grade.

  10. Q: Are there any alternatives to PA84A for technical solutions? A: Yes, there are several alternative materials available, such as PA6, PA66, PEEK, and POM, which may offer different combinations of properties suitable for specific applications.

Please note that the answers provided here are general and may vary depending on the specific grade and manufacturer of PA84A.