BC51PAS-QX

Single Bipolar Transistors Overview

The BC51PAS-QX is a PNP medium power transistor from Nexperia, designed for high collector current applications. It utilizes an ultra-thin DFN2020D-3 (SOT1061D) leadless surface-mount package with visible and solderable side pads. The device features an exposed heat sink for superior thermal conductivity and supports Automatic Optical Inspection (AOI). It is qualified to the AEC-Q101 standard for automotive reliability. Key electrical parameters include a maximum collector-emitter voltage of 45 V, a continuous collector current of -1 A, and a power dissipation rating of 1 W.

Single Bipolar Transistors Feature Summary

• AEC-Q101 qualified for automotive reliability
• Exposed heat sink for excellent thermal performance
• Leadless SMD package suitable for AOI
• High collector current capability

Single Bipolar Transistors Applications

• Linear voltage regulators
• Battery driven devices
• MOSFET drivers
• High-side switches
• Power management circuits

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'QX' against the official Nexperia datasheet to confirm it denotes the reel packaging format and does not imply any functional deviation from the base BC51PAS-Q component. Ensure the procurement documentation explicitly references the AEC-Q101 qualification status required for automotive-grade specifications. Cross-reference the part number with the manufacturer's latest product change notifications to ensure material compliance and availability status.

Single Bipolar Transistors Selection Notes

Select this component when a compact, thermally efficient PNP transistor is required for high-current switching or amplification in space-constrained designs. The DFN2020D-3 package offers reduced PCB area compared to traditional leads. Consider the 45 V voltage rating and 1 A current limit to ensure operation within safe boundaries. The exposed pad design necessitates proper thermal vias on the PCB layout to maximize heat dissipation capabilities effectively.

Single Bipolar Transistors Part Context

This part belongs to the BC5xPAS-Q series of medium power transistors manufactured by Nexperia. The series includes variants with different voltage ratings, such as the BC52PAS-Q (60 V) and BC53PAST-Q (80 V), all sharing the same compact DFN2020D-3 package architecture. This family is engineered to provide robust performance in automotive and industrial environments while maintaining a small footprint.

Single Bipolar Transistors Replacement Considerations

Direct substitutes within the same package and qualification level include the BC52PAS-Q and BC53PAST-Q, provided their higher voltage ratings are compatible with the circuit design. For non-automotive applications, the standard BC51PAS may be considered if AEC-Q101 certification is not mandatory.