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PN3565

Manufacturer: Fairchild, FSC

Leaded Small Signal Transistor General Purpose

Partnumber Manufacturer Quantity Availability
PN3565 Fairchild, FSC 17258 In Stock

Description and Introduction

Leaded Small Signal Transistor General Purpose The PN3565 is a widely recognized NPN bipolar junction transistor (BJT) commonly used in low-power amplification and switching applications. Designed for general-purpose use, it offers reliable performance in circuits requiring moderate current and voltage handling capabilities.  

With a collector current (IC) rating of up to 50 mA and a collector-emitter voltage (VCEO) of 30 V, the PN3565 is suitable for signal amplification, audio preamplifiers, and digital logic interfacing. Its low noise characteristics make it particularly useful in sensitive analog circuits. The transistor features a typical DC current gain (hFE) ranging from 100 to 300, ensuring stable amplification across various operating conditions.  

Encased in a compact TO-92 package, the PN3565 is easy to integrate into printed circuit boards (PCBs) and breadboard prototypes. Its robust construction and consistent performance have made it a preferred choice among hobbyists and engineers alike for educational projects and commercial designs.  

When implementing the PN3565, proper biasing and heat dissipation should be considered to maximize efficiency and longevity. As with all electronic components, adherence to datasheet specifications is essential for optimal operation. Its versatility and cost-effectiveness continue to sustain its relevance in modern electronics.

Application Scenarios & Design Considerations

Leaded Small Signal Transistor General Purpose

Alternative Part Number

  • 2N3904 --: Widely available general-purpose NPN transistor with similar small-signal switching characteristics, low cost, and broad second-source availability.
  • BC547 --: Common NPN small-signal transistor offering comparable current gain and voltage ratings, suitable for general amplification and switching applications.
  • 2N2222A --: Robust NPN transistor with higher current capability and similar pinout, often used as a drop-in substitute in switching and amplifier circuits.
  • 2N3904 --: Widely available NPN general-purpose transistor with similar small-signal switching characteristics and pinout, easy drop-in for many PN3565 applications.
  • BC547 --: Common NPN small-signal transistor with comparable current gain and voltage ratings, suitable for general amplification and switching circuits.
  • MMBT3904 --: SMD version of the 2N3904 with equivalent electrical behavior, useful when a surface-mount alternative to the through-hole PN3565 is needed.
  • 2N3904 --: Widely available general-purpose NPN transistor with similar small-signal switching characteristics and pinout, making it a direct functional substitute.
  • BC547 --: Common NPN small-signal transistor with comparable current gain and voltage ratings, suitable for general amplification and switching applications.
  • 2N2222A --: Robust NPN transistor with higher current capability and similar switching performance, often used as a drop-in replacement in general-purpose circuits.

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