PN4274 TIN/LEAD

Single Bipolar Transistors Overview

The PN4274 is an NPN silicon epitaxial planar transistor manufactured by Central Semiconductor Corp. It utilizes a TO-92-3 through-hole package and operates as a single configuration device. Key electrical ratings include a collector-base voltage of 30 V, a collector-emitter voltage of 4.5 V, and an emitter-base voltage of 4.5 V. The component supports a continuous collector current of 100 mA with a power dissipation capacity of 625 mW. It features a transition frequency of 400 MHz and a collector-emitter saturation voltage of 500 mV.

Single Bipolar Transistors Feature Summary

• Utilizes silicon epitaxial planar technology for stable performance
• Designed for high-frequency applications with a 400 MHz transition frequency
• Provides low saturation voltage characteristics for efficient switching
• Constructed in a standard TO-92-3 through-hole package

Single Bipolar Transistors Applications

• High-frequency amplifier circuits
• General-purpose switching applications
• Audio signal processing stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix to confirm lead-free compliance status, as tin/lead variants exist within the product line. Confirm that the TO-92-3 package dimensions align with your PCB footprint requirements. Ensure the 4.5 V collector-emitter voltage rating meets the circuit's maximum operating conditions. Cross-reference the datasheet for thermal resistance values if heat sinking is required for sustained operation at higher ambient temperatures.

Single Bipolar Transistors Selection Notes

Select this component when a small-signal NPN transistor with high-speed switching capabilities is required. The 400 MHz transition frequency makes it suitable for RF and audio applications where faster response times are necessary compared to standard general-purpose transistors. Consider the low collector-emitter saturation voltage for improved efficiency in switching loads. Verify that the 100 mA current rating and 625 mW power dissipation are sufficient for the intended load conditions.

Single Bipolar Transistors Part Context

The PN4274 belongs to Central Semiconductor's lineup of small-signal bipolar junction transistors. It is designed for use in consumer electronics, telecommunications equipment, and industrial control systems where reliable NPN switching or amplification is needed. The TO-92-3 package allows for easy integration into through-hole printed circuit boards, making it a common choice for prototyping and mass production alike.

Single Bipolar Transistors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.