BC849B-QVL

Overview

The BC849B-QVL is an NPN general-purpose bipolar junction transistor manufactured by Nexperia. It is housed in a SOT323 (SC-70) surface-mount plastic package and is qualified to the AEC-Q101 automotive standard. The device supports a maximum collector current of 100 mA and features a collector-emitter voltage rating of 30 V. Key electrical parameters include a DC current gain (hFE) ranging from 200 to 450 at a collector current of 2 mA, a transition frequency of 100 MHz, and a power dissipation capacity of 200 mW.

Feature Summary

• Automotive-grade reliability certified under the AEC-Q101 standard for robust performance in demanding environments.
• High DC current gain configuration optimized for efficient signal amplification and switching applications.
• Compact SOT323 leadless package design facilitates high-density circuit board layout and automated assembly.

Applications

• General-purpose switching circuits in automotive electronic control units
• Amplification stages in audio-frequency equipment
• Low-noise signal processing in consumer electronics

Procurement Notes

Verify that the specific suffix QVL corresponds to the intended tape-and-reel packaging format required for your manufacturing line. Confirm that the AEC-Q101 qualification status meets the specific reliability standards mandated by your final product's regulatory requirements. Ensure compatibility with standard pick-and-place equipment due to the small form factor.

Selection Notes

Select this component when a compact NPN transistor with verified automotive reliability is required. The 30 V rating and 100 mA current limit suit low-power switching tasks. The high hFE range reduces base drive requirements compared to lower-gain variants. Consider the SOT323 footprint constraints against available board space and thermal dissipation needs.

Part Context

This part belongs to the Nexperia BC849 series of NPN general-purpose transistors. The series includes various gain grades and package options, such as the BC849BW and BC849C. The BC849B-QVL specifically denotes the B gain grade within the automotive-qualified subset of this family, sharing core electrical characteristics with other BC849 variants while differing in packaging or qualification status.

Replacement Considerations

Direct substitutes include other AEC-Q101 qualified NPN transistors in the SOT323 package with matching 30 V and 100 mA ratings. Verify pinout compatibility and ensure the replacement maintains the required hFE range of 200-450. Cross-reference with Nexperia's official substitution guides for confirmed equivalents.