BU931P

Single Bipolar Transistors Overview

The BU931P is an automotive-grade high-voltage NPN power Darlington transistor developed using multi-epitaxial planar technology. Designed specifically for electronic ignition power actuators in automotive environments, it offers rugged bipolar construction and high operating junction temperature capability. The component features a collector-emitter voltage (V_CES) of 500 V and a collector current (I_C) of 15 A. It is housed in a TO-247 package and holds AEC-Q101 qualification.

Single Bipolar Transistors Feature Summary

• AEC-Q101 qualified for automotive reliability
• Very rugged bipolar technology
• High operating junction temperature

Single Bipolar Transistors Applications

• Electronic ignition power actuators in automotive environments

Single Bipolar Transistors Procurement Notes

Verify the NRND status before finalizing designs, as this indicates the component may be subject to discontinuation. Confirm that the TO-247 package dimensions and pinout match your PCB layout requirements. Ensure the design accounts for the specific thermal characteristics associated with the high operating junction temperature rating provided in the official documentation.

Single Bipolar Transistors Selection Notes

Select this part when designing automotive ignition systems requiring a 500 V breakdown voltage and 15 A continuous current handling. The TO-247 package provides robust mechanical stability and thermal dissipation capabilities suitable for high-power switching applications. Consider its ruggedness for general-purpose power actuator use where extreme environmental conditions are present.

Single Bipolar Transistors Part Context

This device belongs to STMicroelectronics' STPOWER family of power bipolar junction transistors. It complements other Darlington transistors in the portfolio, which offer voltage ranges up to 400 V or higher with both NPN and PNP polarities. The BU931P represents the high-voltage segment designed for demanding power switching tasks.

Single Bipolar Transistors Replacement Considerations

The BU931T is a related variant offering identical electrical specifications but packaged in TO-220 instead of TO-247. Designers requiring a different footprint should evaluate the BU931T as a direct physical alternative, ensuring thermal management strategies align with the smaller package's dissipation limits.