BCX54-16-QF

Overview

The BCX54-16-QF is an NPN medium power transistor from the Nexperia BCX54-Q series, housed in a SOT89 (SC-62) flat lead Surface-Mounted Device plastic package. It features a collector-emitter voltage of 45 V and a continuous collector current capability of 1 A, with a peak pulse current rating of 2 A. The device offers three current gain selections; the -16 variant specifies a DC current gain range of 100 to 250 at VCE = 2 V and IC = 150 mA. Qualified according to AEC-Q101, it supports high power dissipation up to 1.35 W on a 6 cm² collector pad and operates within a junction temperature range of -55 °C to 150 °C.

Feature Summary

• AEC-Q101 qualified for automotive applications
• High collector current capability
• Three current gain selections available
• High power dissipation capability

Applications

• Linear voltage regulators
• MOSFET drivers
• Low-side switches
• Battery-driven devices
• Power management
• Amplifiers

Procurement Notes

Verify the specific ordering suffix matches the required current gain bin, as the BCX54-Q series includes multiple hFE variants such as -Q, -10-Q, and -16-Q. Confirm that the SOT89 package orientation and pinout align with the target PCB footprint design. Ensure thermal management strategies account for the specified power dissipation limits under actual operating ambient temperatures.

Selection Notes

Select the BCX54-16-QF when a specific DC current gain range of 100 to 250 is required for circuit stability. Consider the SOT89 package for its exposed die pad if efficient heat transfer to the PCB is necessary. Evaluate the 45 V breakdown voltage against the maximum system supply voltages to ensure adequate safety margins during transient conditions.

Part Context

This component belongs to the BCX54-Q series of NPN medium power transistors designed for robust performance in demanding environments. The series utilizes a standardized SOT89 package to facilitate surface-mount assembly while providing sufficient thermal conductivity through the exposed collector pad. It serves as a versatile switching and amplification element for both industrial and automotive electronic designs.

Replacement Considerations

BCX54-Q, BCX54-10-Q

FAQ

What is the marking code for the BCX54-16-Q?

The marking code for the BCX54-16-Q type number is BD.

How does the collector-emitter saturation voltage vary with temperature?

The collector-emitter saturation voltage increases at lower ambient temperatures, such as -55 °C, and decreases at higher temperatures like 100 °C, based on typical characteristic curves.

What is the transition frequency specification for this transistor?

The transition frequency (fT) is typically 180 MHz when measured at VCE = 5 V, IC = 50 mA, and f = 100 MHz.