BCX54-QX

Overview

The BCX54-QX is an NPN medium power transistor manufactured by Nexperia, housed in a SOT-89 (SC-62) surface-mount package. It features a maximum collector-emitter voltage of 45 V and a continuous collector current of 1 A. The device supports high power dissipation and offers three distinct current gain selections to accommodate various circuit requirements. Qualified under the AEC-Q101 standard for automotive applications, it operates within a temperature range of -55°C to +150°C.

Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• High collector current capability with 1 A rating
• Three selectable current gain configurations
• SOT-89 surface-mount plastic package

Applications

• Linear voltage regulators
• MOSFET drivers
• Low-side switches
• Power management circuits
• Amplifiers

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm the exact current gain binning and packaging configuration. Ensure that the AEC-Q101 qualification status aligns with your project's automotive reliability requirements before finalizing component selection.

Selection Notes

Select this component when a robust NPN transistor with 45 V blocking capability and 1 A current handling is required in a compact SMD form factor. Consider the available gain variants to match amplifier or switching performance needs without external trimming.

Part Context

This part belongs to the BCX54 series of NPN medium power transistors from Nexperia. It shares the SOT-89 package footprint with related models like the BCX54T and BCX54-16, offering standardized mounting solutions for power management and signal amplification designs.

Replacement Considerations

The BCX54-16 is a documented complement within the same product family sharing identical electrical ratings and package dimensions.