2SA954-A

Single Bipolar Transistors Overview

The NEC Corporation 2SA954-A is a single PNP silicon bipolar junction transistor (BJT) designed for driver stages in high-voltage audio equipment. It utilizes a through-hole TO-92-3 epoxy package. Key electrical specifications include a collector-emitter voltage of 80V, a maximum collector current of 300mA, and a transition frequency of 100MHz. The device supports a total power dissipation of 600mW at an ambient temperature of 25°C.

Single Bipolar Transistors Feature Summary

• Designed specifically for driver stages within high-voltage audio equipment applications
• Constructed using PNP silicon technology for reliable switching performance
• Encapsulated in a standard TO-92-3 through-hole package for easy integration

Single Bipolar Transistors Applications

• Driver stages in high-voltage audio amplifiers
• General-purpose switching circuits requiring PNP configuration
• Low-power signal processing stages in consumer electronics

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official documentation to ensure compliance with the exact pinout and electrical tolerances defined for this variant. Confirm that the TO-92-3 package dimensions match your PCB footprint requirements. Cross-reference the 80V rating with your circuit's maximum operating voltage to prevent breakdown. Ensure thermal management strategies account for the 600mW dissipation limit under expected load conditions.

Single Bipolar Transistors Selection Notes

Select the 2SA954-A when a PNP transistor is required for low-power audio driver applications. Its 80V rating suits moderate voltage levels, while the 300mA current capacity handles typical small-signal loads. The TO-92-3 package facilitates manual assembly or wave soldering processes. Consider the 100MHz frequency response for audio-band operations rather than high-speed digital switching tasks where faster transistors might be necessary.

Single Bipolar Transistors Part Context

This component belongs to NEC Corporation's discrete semiconductor lineup, specifically categorized as a single bipolar junction transistor. The 2SA series typically denotes PNP silicon transistors optimized for various amplifier and switching roles. The 2SA954 variant focuses on audio-related driver functions, distinguishing it from general-purpose logic-level transistors by its specific voltage and power characteristics tailored for analog signal paths.

Single Bipolar Transistors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official cross-reference guides or manufacturer datasheets for equivalent components meeting identical 80V, 300mA, and TO-92-3 specifications before substitution.