BST39-QX

Single Bipolar Transistors Overview

The BST39-QX is an NPN bipolar junction transistor manufactured by Nexperia, designed for high-voltage switching applications. It utilizes silicon technology and is housed in a SOT-89 surface-mount package with three leads. The device features a maximum collector-emitter voltage (VCEO) of 350 V and a collector-base voltage (VCBO) of 400 V, providing robust performance in demanding environments. It supports a continuous DC collector current of 100 mA and dissipates up to 1.3 W of power. Key electrical characteristics include a minimum emitter-base voltage (VEBO) of 5 V, a collector-emitter saturation voltage of 500 mV, and a gain-bandwidth product (fT) of 70 MHz.

Single Bipolar Transistors Feature Summary

• High-voltage capability with 350 V collector-emitter breakdown rating suitable for industrial and automotive loads
• Automotive-grade qualification compliant with AEC-Q101 standards for enhanced reliability
• Integrated thermal design within the SOT-89 package supporting efficient heat dissipation

Single Bipolar Transistors Applications

• Automotive lighting control circuits
• Industrial motor driver interfaces
• High-side switching in power supply units

Single Bipolar Transistors Procurement Notes

Verify the specific suffix against official Nexperia documentation to confirm AEC-Q101 automotive qualification status. Ensure the ordering part number matches the required tape-and-reel packaging configuration. Cross-reference the datasheet revision date to validate parameter consistency before finalizing procurement specifications.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring high-voltage NPN switching with moderate current handling capabilities. The SOT-89 package offers a balance between thermal performance and board space efficiency. Consider the 70 MHz bandwidth for general-purpose switching rather than high-frequency RF applications.

Single Bipolar Transistors Part Context

This component belongs to Nexperia's portfolio of high-voltage bipolar transistors engineered for robust operation in harsh environments. The BST39 series provides a reliable solution for replacing legacy discrete components in modern electronic designs, particularly where space constraints and thermal management are critical factors.

Single Bipolar Transistors Replacement Considerations

Consult official Nexperia substitution guides for verified equivalents. Generic replacements may not match the specific AEC-Q101 qualification or exact pinout compatibility required for automotive-grade assemblies.