250 mA constant-current sink for automotive LED strings
The BCR321UE6327HTSA1 from Infineon is a linear LED driver delivering 250 mA per channel from a single output, with a maximum supply voltage of 25 V and a regulated output of 16 V. The internal switch is integrated, so no external pass transistor is needed — the PG-SC74-6 package holds the whole current path.
Package, marking, and counterfeit screening
Housed in a standard SC-74 (SOT-457) surface-mount package, the supplier device package is designated PG-SC74-6. The six-pin footprint is common across Infineon's linear LED driver family, so a single board layout can serve multiple current grades if the BOM is revised. For a buyer vetting gray-market lots, the laser-etched top mark on this part is the primary authenticity check — the font, spacing, and orientation should match Infineon's plant-specific marking specification for the SC74-6 body. Date-code consistency across a reel is a strong signal; a single reel carrying two different date-code weeks from the same Fab suggests a re-mark.