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PXT3904 from 长电

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PXT3904

Manufacturer: 长电, NXP/PHILIPS

SOT-89 Plastic-Encapsulate Biploar Transistors

Partnumber Manufacturer Quantity Availability
PXT3904 长电, NXP/PHILIPS 1608 In Stock

Description and Introduction

SOT-89 Plastic-Encapsulate Biploar Transistors # Introduction to the PXT3904 Electronic Component  

The PXT3904 is a widely used PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. Known for its reliability and performance, this component is commonly employed in low-power circuits where efficient signal amplification or switching is required.  

With a collector-emitter voltage (VCE) rating of -40V and a continuous collector current (IC) of -200mA, the PXT3904 is suitable for a variety of electronic designs. Its complementary NPN counterpart, the PXT3906, allows for symmetrical circuit configurations, making it a versatile choice for push-pull amplifiers and other paired transistor applications.  

The PXT3904 features moderate gain (hFE) values, typically ranging from 100 to 300, ensuring stable performance in amplification stages. Additionally, its low saturation voltage enhances efficiency in switching operations. The transistor is housed in a compact TO-92 package, making it easy to integrate into both prototyping and production environments.  

Common applications include audio amplifiers, signal processing circuits, and digital logic interfaces. Engineers and hobbyists favor the PXT3904 for its balance of cost-effectiveness and functionality. When designing with this component, proper biasing and heat dissipation considerations should be observed to ensure optimal performance.  

Overall, the PXT3904 remains a dependable choice for low-to-medium power electronic designs, offering a practical solution for amplification and switching needs.

Application Scenarios & Design Considerations

SOT-89 Plastic-Encapsulate Biploar Transistors

Alternative Part Number

  • MMBT3904 --: Industry-standard NPN small-signal transistor in SOT-23 with the same 3904 die characteristics and widely available as a direct substitute.
  • 2N3904 --: Classic through-hole NPN general-purpose transistor with equivalent electrical ratings; suitable when board space allows TO-92 package.
  • BC847 --: SOT-23 NPN transistor with comparable voltage and current ratings, commonly used as a functional replacement for 3904 types.

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