BD18010STU

Overview

The BD18010STU is a high-voltage NPN power transistor manufactured by onsemi. It features a collector-emitter voltage rating of 450V and a continuous collector current capability of 2A. The device utilizes a TO-220AB insulated package, providing electrical isolation from the heatsink. Key electrical characteristics include a DC current gain (hFE) ranging from 10 to 60 at specified operating conditions. The component is designed for robust performance in switching applications requiring high voltage tolerance and moderate current handling capabilities.

Feature Summary

• High voltage blocking capability suitable for demanding power circuits
• Insulated package design enabling direct mounting to heatsinks without additional insulators
• Robust construction for reliable operation in high-stress environments

Applications

• Flyback transformer drivers in offline power supplies
• High-voltage switching circuits in industrial equipment
• Output stages in motor control systems

Procurement Notes

Verify the exact ordering suffix matches the required package variant and tape/reel or tube configuration. Confirm that the manufacturer datasheet aligns with the specific lot code and testing standards required for your assembly process. Ensure compliance with RoHS directives if applicable to your region. Cross-reference the part number with official distributor catalogs to confirm authenticity and availability status before finalizing procurement orders.

Selection Notes

Select this component when circuit requirements demand a 450V breakdown voltage with up to 2A continuous current. Consider the thermal resistance of the TO-220AB package for adequate heat dissipation. Evaluate the base drive requirements against the specified hFE range to ensure proper saturation in switching applications. Verify that the operating temperature range meets the environmental constraints of the final system design.

Part Context

This transistor belongs to onsemi's family of high-voltage bipolar junction transistors. These devices are engineered for general-purpose high-voltage switching tasks. The BD18010 series offers a balance of voltage rating and current capacity, making it suitable for various power conversion topologies. It serves as a discrete solution where integrated drivers are not required or cost-prohibitive.

Replacement Considerations

Consult official substitution guides for equivalent high-voltage NPN transistors with matching Vceo and Ic ratings. Verify pinout compatibility and package dimensions before replacing. Ensure thermal performance characteristics are comparable to maintain system reliability.