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KSR1201 from FAILCHIL,Fairchild Semiconductor

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KSR1201

Manufacturer: FAILCHIL, FAIRCHILD

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSR1201 FAILCHIL, FAIRCHILD 2085 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The **KSR1201** from Fairchild Semiconductor is a high-performance NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. Known for its reliability and efficiency, this component is widely used in consumer electronics, industrial controls, and communication systems.  

With a collector-emitter voltage (**VCE**) of 50V and a continuous collector current (**IC**) of 500mA, the KSR1201 offers robust performance in low to medium-power circuits. Its high current gain (**hFE**) ensures effective signal amplification, while fast switching speeds make it suitable for pulse and digital applications.  

The transistor features a compact **TO-92** package, making it easy to integrate into various circuit designs. Its low saturation voltage enhances energy efficiency, reducing power losses in switching operations. Additionally, the KSR1201 is designed to operate reliably across a broad temperature range, ensuring stability in diverse environmental conditions.  

Engineers and designers favor the KSR1201 for its balance of performance, cost-effectiveness, and versatility. Whether used in audio amplifiers, relay drivers, or signal processing circuits, this transistor delivers consistent results, making it a dependable choice for electronic projects.

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • 2N3904 --: General-purpose NPN transistor in TO-92, widely available and commonly used as a functional substitute for small-signal switching applications.
  • BC547 --: Popular NPN small-signal transistor with similar switching characteristics, easy to source and pin-compatible in many circuits.
  • MMBT3904 --: SMD version of the 2N3904 NPN transistor, suitable when a surface-mount alternative is needed for the same small-signal role.

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