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KSR1004 from FSC,Fairchild Semiconductor

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KSR1004

Manufacturer: FSC, Fairchild

NPN (SWITCHING APPLICATION)

Partnumber Manufacturer Quantity Availability
KSR1004 FSC, Fairchild 37000 In Stock

Description and Introduction

NPN (SWITCHING APPLICATION) **Introduction to the KSR1004 from Fairchild Semiconductor**  

The **KSR1004** is a high-performance electronic component designed by Fairchild Semiconductor, now part of ON Semiconductor. This device is a **PNP silicon epitaxial planar transistor**, optimized for low-voltage, high-speed switching applications. With its compact **SOT-23** package, the KSR1004 is well-suited for space-constrained designs while delivering reliable performance.  

Key features of the KSR1004 include a **low saturation voltage**, ensuring efficient power management, and a **fast switching speed**, making it ideal for signal amplification and digital logic circuits. Its **high current gain (hFE)** and **low leakage current** enhance stability in various operating conditions.  

Common applications include **portable electronics, power management systems, and audio amplifiers**, where efficiency and compactness are critical. Engineers favor the KSR1004 for its consistent performance, durability, and compatibility with automated assembly processes.  

Fairchild Semiconductor's legacy of quality ensures that the KSR1004 meets rigorous industry standards, providing designers with a dependable solution for modern circuit designs. Whether used in consumer electronics or industrial controls, this transistor offers a balance of performance and reliability.  

For detailed specifications, consult the official datasheet to ensure proper integration into your design.

Application Scenarios & Design Considerations

NPN (SWITCHING APPLICATION)

Alternative Part Number

  • 2N3904 --: General-purpose NPN transistor with similar small-signal switching characteristics, widely available and pin-compatible in most through-hole and SMD packages.
  • BC547 --: Low-noise NPN transistor suitable for general switching and amplification, comparable current and voltage ratings to the original part.
  • MMBT3904 --: SMD version of the 2N3904 with equivalent electrical performance, good choice when a surface-mount replacement is acceptable.

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