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The BCW66KFE6327HTSA1 is a single NPN silicon bipolar junction transistor (BJT) manufactured by Infineon Technologies. It is designed for surface-mount applications in the SOT-23-3 package and holds AEC-Q100 automotive qualification. Key electrical parameters include a collector-emitter breakdown voltage (VCEO) of 45 V, a collector-base voltage (VCBO) of 75 V, and an emitter-base voltage (VEBO) of 5 V. The device supports a maximum continuous DC collector current of 800 mA with a power dissipation rating of 500 mW. It features a transition frequency (fT) of 170 MHz and a DC current gain (hFE) range from 250 to 630. Operating temperatures span from -65°C to +150°C.
Verify component authenticity through authorized distribution channels due to potential counterfeit risks. Confirm that the specific suffix matches the required gain bin and packaging format. Check current lifecycle status as availability may be limited. Ensure storage conditions comply with moisture sensitivity levels specified in the datasheet to maintain device integrity prior to assembly.
Select this component when automotive qualification is mandatory for NPN BJT applications. Compare hFE ranges against circuit requirements to ensure adequate gain margins. Evaluate thermal management needs given the 500 mW dissipation limit in small packages. Consider alternative packages if higher current handling or different pin configurations are necessary for the specific layout constraints.
This part belongs to the BCW66 series of general-purpose NPN transistors. It shares similar electrical characteristics with variants like BCW66KHE6327HTSA1 but differs in specific gain binning and packaging details. The series is widely used in automotive and industrial applications where reliable switching performance and standardized footprints are required for mass production integration.
Public confirmed substitute part numbers: None identified.