BCV49-QX

Overview

The BCV49-QX is an NPN Darlington transistor manufactured by Nexperia USA Inc., designed for surface-mount applications. It features a UPAK package with four pins and a single chip configuration. The device supports a maximum continuous collector current of 500 mA and a collector-emitter voltage (Vceo) of 60 V. Key electrical parameters include a minimum DC current gain (hFE) of 2000, a maximum power dissipation (Pd) of 1.3 W, and a collector-emitter saturation voltage (VceSAT) of 1 V. The component operates within a temperature range of -65°C to 150°C, with a maximum collector-base voltage of 80 V and an emitter-base voltage of 10 V.

Feature Summary

• High current gain capability suitable for sensitive signal amplification
• Robust thermal performance with high maximum junction temperature rating
• Compact surface-mount packaging for automated assembly integration

Applications

• General-purpose switching circuits
• Low-power amplifier stages
• Interface driving in consumer electronics

Procurement Notes

Verify the specific suffix 'QX' against official Nexperia documentation to confirm automotive qualification status or specific tape-and-reel specifications. Ensure the ordering part number matches the exact package variant and marking code required for your design. Cross-reference with authorized distributors to confirm current availability and lead times for this specific designation.

Selection Notes

Select the BCV49-QX when high current gain is required in a compact surface-mount form factor. Consider its 60 V collector-emitter voltage rating and 500 mA current capacity for low-to-medium power applications. Evaluate the UPAK package dimensions against board space constraints and verify thermal management requirements given the 1.3 W power dissipation limit.

Part Context

This component belongs to Nexperia's discrete semiconductor portfolio, specifically within the bipolar junction transistor category. As a Darlington pair configuration, it offers significantly higher current gain compared to standard transistors. The product line targets applications requiring reliable switching and amplification in consumer and industrial devices.

Replacement Considerations

Consult official Nexperia substitution guides for equivalent NPN Darlington transistors in UPAK packages. Verify pinout compatibility and electrical parameter margins before replacing with generic alternatives.