STMicroelectronics

BU941ZPFI

BU941ZPFI Description

The BU941ZPFI from STMicroelectronics is a high-performance NPN Darlington bipolar transistor designed for demanding automotive and industrial applications. Encased in a robust TO-3PF package, this device offers a 350V collector-emitter breakdown voltage and a maximum collector current of 15A, making it suitable for high-power switching and amplification tasks. With an operating junction temperature of up to 175°C, it excels in harsh environments where thermal stability is critical. The transistor is RoHS3 compliant and REACH unaffected, ensuring adherence to environmental regulations. Its low collector cutoff current (100µA max) and high DC current gain (hFE ≥ 300 @ 5A, 10V) enhance efficiency and reliability in circuit designs.

BU941ZPFI Features

• High Voltage & Current Handling: 350V Vce and 15A Ic for robust power management.
• Automotive-Grade Reliability: Meets stringent automotive standards for durability.
• Low Saturation Voltage: 2V max @ 300mA, 12A, reducing power losses in switching applications.
• Wide Temperature Range: Operates reliably up to 175°C (TJ).
• High Gain (hFE): Ensures efficient signal amplification with minimal base current.
• Through-Hole Mounting: TO-3PF package for secure mechanical and thermal performance.
• Compliance: ROHS3, REACH, and EAR99 certified for global use.

BU941ZPFI Applications

• Automotive Systems: Ignition circuits, motor drivers, and power regulators.
• Industrial Power Supplies: High-voltage switching and linear amplification.
• Inverters & Converters: Efficient energy conversion in UPS and solar applications.
• High-Temperature Environments: Suitable for under-hood automotive or industrial equipment.
• Relay & Solenoid Drivers: Low saturation voltage ensures minimal energy dissipation.

Conclusion of BU941ZPFI

The BU941ZPFI stands out as a high-reliability, high-power Darlington transistor tailored for automotive and industrial applications. Its exceptional thermal performance, high voltage/current ratings, and low saturation losses make it superior to standard bipolar transistors in efficiency-critical designs. Whether used in automotive power modules, industrial inverters, or high-temperature systems, this device delivers consistent performance under extreme conditions. STMicroelectronics' commitment to quality ensures long-term durability, making it a preferred choice for engineers prioritizing robustness and compliance.