BD441

Overview

The BD441 is an NPN power transistor manufactured by STMicroelectronics using planar technology with a base island layout. It provides exceptional high gain performance coupled with very low saturation voltage. The device is housed in a SOT-32 plastic package and features a collector-emitter voltage of 80 V, a continuous collector current of 4 A, and a total dissipation of 36 W at 25 °C case temperature. Its complementary PNP type is the BD442.

Feature Summary

• Manufactured in planar technology with base island layout for exceptional high gain performance
• Features very low saturation voltage to enhance efficiency
• Complementary PNP type available as BD442

Applications

• Linear industrial equipment
• Switching industrial equipment

Procurement Notes

Verify the specific ordering code and packaging details against official documentation before procurement. Confirm that the ECOPACK lead-free second level interconnect meets environmental requirements. Ensure the component selection aligns with the absolute maximum ratings provided in the datasheet to prevent device failure during operation.

Selection Notes

Select this component when designing circuits requiring high gain and low saturation voltage in a compact SOT-32 package. Consider the 80 V collector-emitter voltage rating and 4 A continuous current capability for appropriate load matching. Verify thermal management requirements based on the 36 W total dissipation limit at a 25 °C case temperature.

Part Context

This NPN power transistor belongs to the broader family of bipolar transistors offered by STMicroelectronics. It is designed for medium power linear and switching applications within industrial sectors. The device utilizes advanced planar technology to ensure reliability and performance consistency across various operating conditions.

Replacement Considerations

The complementary PNP type is BD442.