2N4953

Single Bipolar Transistors Overview

The onsemi 2N4953 is an NPN epitaxial silicon transistor designed for general-purpose amplifier and switching applications requiring collector currents up to 500mA. It features a collector-emitter voltage (VCEO) of 30V, a collector-base voltage (VCBO) of 60V, and a continuous collector current rating of 1.0A. The device operates within a junction temperature range of -55°C to +150°C and is housed in a TO-92 package.

Single Bipolar Transistors Feature Summary

• Epitaxial silicon construction optimized for high reliability
• Designed for general-purpose amplification and switching tasks
• Capable of handling collector currents up to 500mA

Single Bipolar Transistors Applications

• General-purpose amplifiers
• Electronic switches
• Low-power signal processing circuits

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as this part number was originally produced by Fairchild Semiconductor. Confirm that the specific unit received matches the required electrical characteristics and physical dimensions specified in the official datasheet before integration into production designs.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with a 30V VCEO rating is required for low-to-medium power applications. Ensure the design accounts for the thermal resistance limits and maximum junction temperature constraints defined in the absolute maximum ratings section.

Single Bipolar Transistors Part Context

This component belongs to the family of small-signal NPN transistors commonly used in discrete electronic circuits. It serves as a fundamental building block for analog signal conditioning and digital logic interfacing where moderate current gain and voltage handling are necessary.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference lists or distributor databases for verified substitute part numbers from other manufacturers that meet identical electrical specifications and pinout configurations.