BFL4037-1E

Single FETs, MOSFETs Overview

The BFL4037-1E is a discontinued N-channel Power MOSFET manufactured by onsemi. It features a 500V drain-source voltage rating and a continuous drain current of 9.6A at case temperature. The device utilizes TO-220F-3FS packaging with a maximum power dissipation of 37W at case temperature. Key electrical characteristics include a gate charge of 38.4 nC at 10V and an input capacitance of 1000 pF at 30V. The component operates within a junction temperature range of -55°C to 150°C.

Single FETs, MOSFETs Feature Summary

• N-channel enhancement mode metal oxide semiconductor field effect transistor
• High voltage capability for robust power switching applications
• Through-hole mounting configuration for secure mechanical attachment

Single FETs, MOSFETs Applications

• Power supply circuits requiring high voltage isolation
• Industrial motor control systems
• Uninterruptible power supply (UPS) architectures

Single FETs, MOSFETs Procurement Notes

This specific part number is officially obsolete and no longer in production. Verification of availability must focus on surplus distributors or secondary market sources rather than direct manufacturer allocation. Buyers should confirm the authenticity of stock through authorized channels and request recent lot traceability documentation to ensure component integrity before integration into new designs.

Single FETs, MOSFETs Selection Notes

Designers seeking active alternatives should evaluate components with matching 500V ratings and comparable TO-220 form factors. Considerations must include verifying that substitute devices meet the required thermal dissipation limits and gate drive specifications. Cross-referencing datasheets for parameters such as on-resistance and switching speeds is essential to maintain system performance when replacing this legacy component.

Single FETs, MOSFETs Part Context

The BFL4037-1E belongs to the BFL40 series of discrete power semiconductors from onsemi. This series targets general-purpose power switching needs where reliability and voltage handling are critical. As a legacy product, it represents earlier generations of silicon MOSFET technology designed for through-hole assembly in industrial and consumer electronics hardware.

Single FETs, MOSFETs Replacement Considerations

Publicly confirmed similar substitutes include STF14NM50N from STMicroelectronics and IRFIB7N50APBF from Vishay Siliconix. These alternatives offer comparable voltage and current ratings but require verification of pinout compatibility and thermal management requirements.