BUX48A

Single Bipolar Transistors Overview

The BUX48A is a high-power NPN silicon transistor from STMicroelectronics, utilizing multiepitaxial mesa technology. It is housed in a TO-3 metal case and designed for switching applications. Key electrical ratings include a collector-emitter voltage (VCEO) of 450 V, a maximum DC collector current of 15 A, and a peak collector current of 30 A. The device supports a total power dissipation of 175 W at 25°C case temperature. It features fast switching capabilities with turn-on times around 1 μs and fall times near 0.8 μs under resistive load conditions.

Single Bipolar Transistors Feature Summary

• High voltage capability suitable for mains-powered industrial circuits
• Fast switching speed optimized for efficient power conversion
• High current handling capacity for robust performance

Single Bipolar Transistors Applications

• Switch mode power supplies
• Flyback converters
• Forward single transistor low power converters

Single Bipolar Transistors Procurement Notes

Verify the specific package variant required, as the BUX48A designation corresponds to the TO-3 metal case. Confirm that the ordering suffix matches the exact voltage rating and thermal characteristics needed for the target application. Ensure compliance with RoHS standards if applicable to the project requirements.

Single Bipolar Transistors Selection Notes

Select this component for designs requiring high voltage isolation and rapid switching transitions. Consider the thermal resistance and mounting constraints associated with the TO-3 package when designing heat sinks. Evaluate the base drive requirements against the specified saturation voltages to ensure efficient operation within the circuit parameters.

Single Bipolar Transistors Part Context

This device belongs to a family of high-power NPN transistors including the BUX48, BUV48A, and BUV48AFI. While sharing similar electrical characteristics, these variants differ primarily in their physical packaging, such as TO-218 plastic or ISOWATT218 isolated cases. The BUX48A specifically denotes the standard TO-3 metal enclosure version intended for general-purpose high-power switching.

Single Bipolar Transistors Replacement Considerations

Direct substitutes within the same series include the BUX48 and BUV48A. Verify that alternative packages like TO-218 or ISOWATT218 fit the mechanical constraints of the existing design. Electrical parameters must be cross-referenced to ensure compatibility with the original circuit's voltage and current demands.